The speed of 10 cars on a certain highway stretch was recorded below. If the mean of the data is 63.2 with a standard deviation of 6.2, circle all data values with a z-score less than 0.5.
{49, 58, 60, 63, 64, 64, 65, 67, 70, 72}

Answers

Answer 1

Answer:

Data values: 63, 64, 64, 65

Step-by-step explanation:

[tex]Z=\frac{x-\mu}{T}\ or\ Z=\frac{\mu-x}{T}[/tex]

a.

[tex]0.5 = \frac{x-63.2}{6.2}[/tex]

x - 63.2 = 0.5 × 6.2

x = 66.3

b.

[tex]0.5 = \frac{63.2-x}{6.2}[/tex]

63.2 - x = 0.5 × 6.2

x = 60.1

values that falls within 60.1 < x < 66.3

= 63, 64, 64, 65


Related Questions

PLEASE HELP DUE IN 5 MIN

Answers

1025.
To find the equation, you have to know the slope (5x) and the y intercept (25)
(Formula: y=mx+b) It says the input= x.
So plug 200 for x
5(200)+25=1025

The value of output for value of input of 200 is,

⇒ y = 1025

What is an expression?

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

We have to given that;

The table shows the outputs for several inputs.

Now, We can find the expression for the table as;

Take two points are (0, 25) and (1, 30)

Hence, The equation is,

y - 25 = (30 - 25) / (1 - 0) (x - 0)

y - 25 = 5x

y = 5x + 25

Hence, The value of output for value of input of 200 is,

y = 5 × 200 + 25

y = 1000 + 25

y = 1025

Thus, The value of output for value of input of 200 is,

⇒ y = 1025

Learn more about the mathematical expression visit:

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HELP please Multiplication Properties of Exponents DROPBOX Part 1 (3parts)
Grade seven

Answers

Answer:

1) 2x^2   2) 2n^3 x^2    3) 4xy or 2x2y  4)2xy

Step-by-step explanation:

sorry if not correct-

A. Reflect triangle TRX across the x-axis to form triangle T'R'X'.

B. If triangle TRX is rotated 180 degrees to form triangle T'R'X', what are the coordinates of point X.

Answers

Answer:

X' = (-2, 4)

Step-by-step explanation:

If you reflect the triangle over the x-axis you find that X' is (-2, 4). If you would like the image, you can ask me.

Niguel is using the video game controller shown. The game Maguire is playing has a very special moves that require pressing two lettered buttons at the same time. how many 2-button special moves are possible with a controller?

A. 16
B. 720
C. 30
D: 15

Answers

the answer should be 30. sorry if this is incorrect but i am pretty sure that it is 30

negative decimals on the number line 5

Answers

Answer:

B

Step-by-step explanation:

Since there is 10 lines separating -3 and -4, that means the space between 2 lines in 1 tenth, and b is 3.5 lines away from -3. Making it -3.35


have a nice day :)

Answer:

B

Step-by-step explanation:

Each section represents 0.1

You would count 3 sections to the left of -3 because -3.35 is less than -3. You would end up at -3.3. Move to the left half a section for 0.05 and you would end up at point B, which is equal to -3.35.

I hope this helps and please mark me as brainliest!

And i nee help in MORE QUESTIONS

Answers

Answer:

The true statements are C and D

Step-by-step explanation:

Find the mean temperature of both cities (the workings would take up too much space but to find the mean add the average daily temperature for each month together then divide the answer by 12. This means that the mean for city A is 46.5 degrees Fahrenheit and for City B it is 64.9 degrees Fahrenheit.For the range, you subtract the lowest daily average temperature in the month from the highest one, therefore for City A it is 90-2=88 degrees Fahrenheit and for City B it is 88-30=58 degrees Fahrenheit.From finding out the mean temperature and range for both cities, that allows you to rule out all the statements as false except for C and D

which number line shows the solution of 5x-25<-15?
givning brainliest

Answers

Answer:

x < 2

Step-by-step explanation:

5x-25<-15

Add 25 to each side

5x-25+25<-15+25

5x < 10

Divide by 5

5x/5 < 10/5

x < 2

Open circle at 2   line to left

Rule 1: Subtract 4 starting from 20.
Rule 2: Subtract 3 starting from 20.

What would the coordinate pair be?

Answers

Answer:rule 1  is 16

             rule 2  is 17

Step-by-step explanation:

The first one is 16

The second one is 17

HELP HURRY WHat is the answer.

Answers

Answer:

your answer should be the 3rd one srry I'm so late

Marla wanted to train to run a 6 mile race. How many days did it take her to reach 6 miles?

She reached her goal on the 26th day.

She reached her goal on the 29th day.

She reached her goal on the 30th day.

She reached her goal on the 27th day.

Answers

she reached 6 miles on her 30th day

Given the distance Maria ran each day, the total distance she ran during a fifteen ( 15 ) days strech is 55.5miles.

What is  multiplication?

In mathematics, multiplication is a method of finding the product of two or more numbers. It is one of the basic arithmetic operations, that we use in everyday life.

here, we have,

Expression for the Total of Distance ran by Maria

Total distance = Distance ran each day × Number days

Given the data in the question;

Distance ran each day by Maria Dm = 3.7miles

Number days ran n = 15days

Total number of distance ran by Maria TDm = ?

Total distance = Distance ran each day × Number days

TDm = Dm × n

We substitute in our values

TDm = 3.7miles × 15

TDm = 55.5miles

Given the distance Maria ran each day, the total distance she ran during a fifteen ( 15 ) days strech is 55.5miles.

Learn more about multiplication here:

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complete question:

Marla ran 3.7 miles a day for 15 days straight. How many miles did Marla run altogether during the 15 day stretch?

Whoever gets it right can have brainliest but answer ASAP!

Answers

Answer:

3 1/3

Step-by-step explanation:

Multiply

2 1/2 * 1 1/3 = 20/6

Simplify

20/6 = 10/3 = 3 1/3

Answer:

20/6=10/3= 3 1/3

Step-by-step explanation:

3 1/3 =10/3 just simplifed

Please answer this math problem sceenshot below

Answers

Answer:

3 and 4 it is 60

is the answer

if you like my answer please like comment and mark me as brilliant

They are both 60 on both answers

QUICK I NEED THE CORRECT ANSWERS | 100 POINTS + BRAINLIEST FOR QUICKEST ANSWER

Answers

1. 6 feet long
2. The border increases the length of each side by 1 foot
3. The width of the border is 6 inches (0.5 feet) because it adds on 1 foot in length to each side. Splitting it between the 2 borders for each side would make it 6 inches.

Answer:

1.  6 ft

2. 1 ft

3. 1/2 ft

Step-by-step explanation:

We know that the quilt is the shape of a square, since we are told that the main design has the same length sides of 5 ft.

Area of a square = s² (where s is the side length)

If the finished quilt has an area of 36 ft² then the length of one side is:

⇒ s = √(36) = 6 ft

Side length of main design = 5 ft

Side length of finished quilt = 6 ft

6 - 5 = 1 ft

Therefore, the border increased the total length of each side by 1 ft

As the border goes around the whole quilt, this means that the extra 1 ft needs to be divided by 2, so that each side has an equal amount added.

Therefore, the width of the border is 1/2 ft

**see attached diagram.  Main design is shown in blue, border is shown in green**

I need help please!!!!!!!

Answers

Answer:

Ray HF is not shown in the drawing.
Ray FH is ccorrect, but HF is not.

in 2014 the price of a forever stamp from the United States Postal Service was 0.49 how many forever stamps Can Alyssa buy for 30.38

Answers

She can buy 62 stamps. 30.38 cost/0.49 per stamp=62.

The solution to -3x + 5x - 7 = -11 is _____.
-1/2
-9
-2 1/4
-2

Answers

Answer is -2
I hope that I helped ;D


please help me with this! i’ll give you brainlist or whatever it’s called just help

Answers

Y= -2, -1, 0, 1 ,2
The function is linear

Answer:

-2, -1, 0, 1, 2

Step-by-step explanation:

-4/2=-2

-2/2=-1

0/2=0

2/2=1

4/2=2

1. Lionel wants to compare the heights of his plants. What type of graph ou.ld be best for him to use? *

pie or circle graph
line graph
bar graph
Other:
2. Kathy records how many cars of each color are in the parking lot and then turns those into percentages. What kind of graph should she use?

pie or circle graph
line graph
bar graph
Other:
3. Find the mean of these numbers:5,11,2,12,4,2

4.1
4.5
6
4

4. 3, 4, 5, 5, 5, 6,7 The range of these numbers is ...

15
4
5
2
Other:
5. In order to find the median, the data must be sorted from least to greatest first.

True
False
Option 3
6. You use this type of graph when comparing a change over the course of time *

pie or circle graph
line graph
bar graph
Other:
7, A middle school has 6th grade, 7th grade, and 8th grade teachers. The principal wants to determine what supplies to order for the supply closet. Which of the following represents a random sample of teachers?

a. Surveying all the math teachers
b. Surveying all the teachers who have bus duty
c. Surveying all the teachers who are married
d. Surveying every fifth teacher according to the staff directory on the school website

8. A student wants to know which type of of pizza high school students perfer. Which of the following options is a good, representative sample of the population?

Asking all the 10th graders in the school
Asking the school principal which type of pizza he perfers
Asking 20 students from each grade level
Asking the students who walk to school
Other:

Answers

Answer:bar graph

Step-by-step explanation:because it is easier to record on a bar graph and pie and line graph are harder to read when recording things. Hope this helps

Which expression is equivalent to this fraction?

a. 19-5
b. 5-19
c. 5÷19
d. 19÷5​

Answers

C. The line between the denominator and numerator represents division. Since the 5 is on top, it shows that its the number being divide

Answer:

C

Step-by-step explanation:

[tex]5 \div 19[/tex]

think of

5/19 as in and out. 5 would be inside 19 would be on the outside. Therefore

5÷19 is equivalent to

[tex] \frac{5}{19} [/tex]

SOMONE HELPPPP PLEASEE!!

Answers

Answer:

animal weights 15 pounds at birth

please make this answer brainliest If I helped you!

Answer:

animal weights 15 pounds at birth

Step-by-step explanation:

negative decimals on the number line

Answers

Answer:

-0.58

Step-by-step explanation:

The number gets less as you move to the bottom. Each dash represents 0.01. The dot is 3 lines below -0.55, so you would do -0.55 - 0.03, and the answer is -0.58.

I hope this helps and please mark me as brainliest!

Answer:

-0,56

Step-by-step explanation:

As you go up, the numbers tend to get larger. -0.5 is larger than - 0.6

So considering where the dot is on the number line, you have to subtract - 0.02 for every horizontal line you cross.

Another way of putting this is you must add 0.02.

For me, it is easier to add 0.02 because the amount is getting bigger. Why 0.02? it is because there are 5 horizontal notches between -0.6 and - 0.5. Each notch must be -.1/5 = -0.02

First notch: -0.6 + 0.02 = -0.58

Answer: Second notch: -0.58 + 0.02 = -0,56  

Paul sketches a right triangle with legs of lengths a and b and a hypotenuse of length h. He writes an equation that relates a, b, and h, and then solves it for h. Which of the following is the solution for h that Paul writes?

Answers

Answer:

B. H=[tex]\sqrt{a^2 + b^2}\\[/tex]

Step-by-step explanation:

please help me? < 3 (8th grade)

Answers

Answer:

x= −2 and y=2

Step-by-step explanation:

First graph it onto the coordinate plane. Wherever they intersect, those coordinates are the answer.

To graph the equation,

1) Plot the y-intercept

2) Depending on whether the slope is positive or negative, go up or down and left or right from the y-intercept.

The students in one social studies class were asked how many brothers and sisters (siblings) they each have. The dot plot here shows the results. How many of the students have six siblings? 3
4
1
2

Answers

Answer:

1

Step-by-step explanation:

this is because if you look at the scatter plot count up the amount over 6 there is 1 dot meaning 1 student

Answer: 1.

Step-by-step explanation:

PLEASEE SOMEONE HELPP!!

Answers

Last option. The line should represent the average of the points. You can see there are 7 dots at the top of line p and 7 dots below line p. While line m has way more below than at the top.

PLEASE HELP ASAP
Select from the drop-down menus to correctly complete each statement.
Quadrilateral ABCD can be mapped onto quadrilateral EFGH with a ____ followed by a ___. The figures are___.

Answers

Answer: Dilation followed by a rotation & they are similar.

Step-by-step explanation:

Three trees are planted. The direct distance from tree A to tree B is 200 feet. The direct distance from tree B to tree C is 300 feet. Which of the choices could be the direct distance from tree A to tree C?
50 feet
650 feet
550 feet
350 feet

Answers

the answer is 350 feet
350 feet is a possible option, only if this is the Pythagorean theorem

Sharon is buying candy. She buys 5 of each type on the menu. If she splits the price equally with four friends, how much do they each pay?

Candy Menu
Item
Cost
Licorice
$0.05
Gumball
$0.01
Gummy Bear
$0.07

Answers

$.09 is how much each friend pays
Totale price: ($0.05 x 5) + ($0.01 x 5) + ($0.07 x 5) = $0.65

The price each pay: $0.65/5 = $0.13

I will give brainliest
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

bike 2 5 (2,5)

top hat 4 2 (4,2)

ball 4 9 (4,9)

pogo stick 9 9 (9,9)

bear 10 2 (10,2)

Answer:

Step-by-step explanation:

bike 2 5 (2,5)

top hat 4 2 (4,2)

ball 4 9 (4,9)

pogo stick 9 9 (9,9)

bear 10 2 (10,2)

What is the area of this quadrilateral?

Answers

Answer:

C, 48 square feet

Step-by-step explanation:

Area of trapezoid is [tex]\frac{b_1+b_2}{2}\cdot h[/tex], where b1 and b2 are the two bases.

The top base is 9, while the bottom base is 9+3+3=15.

9+15/2 = 12 * 4 = 48.

Answer:

your answer would be D. 36 square feet

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