Suppose the heights of the members of a population follow a normal
distribution. If the mean height of the population is 65 inches and the
standard deviation is 3 inches, 68% of the population will have a height within
which range?
A. 59 inches to 71 inches
B. 53 inches to 77 inches
C. 62 inches to 68 inches
D. 56 inches to 74 inches

Answers

Answer 1

Answer:

C; 62 to 68 inches

Step-by-step explanation:

Here, we want to get the population range that is having a probability of 68%

From the empirical rule, a measure of 1 standard deviation above the mean, with 1 standard deviation below the mean will give a total percentage of 68%

From the question;

1 standard deviation above the mean is 65 + 3 = 68

1 standard deviation below the mean is 65-3 = 62

so the range of the height of the population is 62 to 68 inches

Related Questions

Solve the following quadratic equation.
(1 - 18)2 = 1
OA
x = 19 and x = 17
OB.
x= -19 and x = .17
OC. x= -19 and x = 17
D.
x = 19 and x=-17

Answers

Given:

Consider the given equation is

[tex](x-18)^2=1[/tex]

To find:

The values of x.

Solution:

We have,

[tex](x-18)^2=1[/tex]

Taking square root on both sides, we get

[tex]x-18=\pm\sqrt{1}[/tex]

[tex]x-18=\pm 1[/tex]

Adding 18 on both sides, we get

[tex]x-18+18=\pm 1+18[/tex]

[tex]x=\pm 1+18[/tex]

Now,

[tex]x=1+18[/tex] and [tex]x=-1+18[/tex]

[tex]x=19[/tex] and [tex]x=17[/tex]

Therefore, the correct option is A.

PLEASE HELP

A company's human resources (HR) department wants to find out what proportion of the company's 1,500 employees regularly visit the in-office recreational room. Throughout a week, HR assistants randomly handed out surveys to employees as they entered the office building every day, until 400 different employees confirmed or denied they visited the recreational room on a regular basis. The survey found that over 30% of the employees who completed the survey visit the recreational room on a regular basis. Which assumption can be made regarding the proportion of all the employees who visit the recreational room on a regular basis?

А. No assumptions can be made about the approximate proportion of all employees who visit the recreational room because the sample is blased.
B. The approximate proportion of all employees who visit the recreational room will be similar to the sample proportion because the sample accurately represents the population.
C. The approximate proportion of all employees who visit the recreational room will be greater than the sample proportion because it is a larger group of employees.
D. No assumptions can be made about the approximate proportion of all employees who visit the recreational-room because the sample size is too small.

Answers

Answer:

The answer is B

Step-by-step explanation:

The approximate proportion of all employees who visit the recreational room will be similar to the sample proportion because the sample accurately represents the population.

What is a survey?

A survey is conducted in order to collect a piece of specific information from a group of people chosen from the entire population who denotes the entire population for those questions.

The assumption can be made regarding the proportion of all the employees who visit the recreational room on a regular basis is:

B.) The approximate proportion of all employees who visit the recreational room will be similar to the sample proportion because the sample accurately represents the population.

Learn more about Survey:

https://brainly.com/question/17373064

#SPJ2

125 = 5 missing exponent

Answers

Step-by-step explanation:

5³ that's yo answer!!!!!!!!!!!!!!?

can I have brainliest

Answer:

Well, I don't really understand the question, but if your looking for the missing exponent it would be:

125=5x

or 5^3 is 125.

Step-by-step explanation:

How long does it take $150 to grow to $600 at 5% annual percentage rate compounded continously? Round to the nearest whole number. Must show work.

Answers

Or, if your money is earning a 5 percent interest rate, you'll double it in 14.4 years (72 divided by 5 equals 14.4). If your money is earning a measly 1 percent interest rate, it will take you—yep, you guessed it—a whopping 72 years to double it.

what is T/8 = -4 solve for T

Answers

Answer:

The answer is -32

Step-by-step explanation:

Multiply both sides by 8 to cancel 8 as the denominator and you have T = -32

dan buys a car for £2,200 it depreciates at a rate of 0.5% per year how much would it be worth in 6 years

Answers

Given:

The initial value of car = £2,200

Depreciation rate = 0.5%

To find:

The worth of car after 6 years.

Solution:

Exponential decay model:

[tex]y=a(1-r)^t[/tex]

Where, a is the initial value, r is the rate of depreciation and t is number of years.

Putting a=2200, r=0.005 and t=6, we get

[tex]y=2200(1-0.005)^6[/tex]

[tex]y=2200(0.995)^6[/tex]

[tex]y=2200(0.9703725)[/tex]

[tex]y=2134.8195[/tex]

[tex]y\approx 2134.82[/tex]

Therefore, the worth of the car after 6 years is £2134.82.

if 15% of a value is 120 what is 20% of the value

Answers

Answer:

160

Step-by-step explanation:

120divide15=8x20=160

Answer:

160

Step-by-step explanation:

15%=0.15

120/0.15=800

20%=1/5

800*1/5=160

HELP!!! MARKING BRAINLIEST!!!

Answers

Answer:

I'm pretty sure it's an open circle on 22 pointing to the right

Answer:

It would be h>22. So graph it at 22.

Step-by-step explanation:

Was it correct?? Hope this helps!!

7 * ( -15 ):

por favor, es urgente):

Answers

Answer: From what I understand you want me to do 7*(-15)??? and the answer to that is -105.

Step-by-step explanation: All you have to do is 7*-15

Please Help!!
On answering the questions

Answers

Answer:

They both have paper

Step-by-step explanation:

Crayons have paper wrapped around them and a newspaper is made of paper. & they both can be recycled

HELPPP PLEASEEE I need it like for real

Answers

Answer:

Step-by-step explanation:

.)Express 0.000840 in scientific notation

Answers

Step-by-step explanation:

I hope it helps.

.........

Ill give brainliest to the person who gets it right!!!!!!!

Answers

I think it’s a if not a then maybe b

It would be A. Because the line should point through 70-90 and the 70 should have a black line so the correct answer would be A. :)

choose all of the statements that correctly compare the two functions shown (brainliest)

Answers

Answer:

one of the answers is c

Step-by-step explanation:

URGENT HELP !!!!!! answer correctly !!!!! Will be marking Brianliest !!!!!!!!!!!!!

Answers

Answer:

(-2, -6)

Step-by-step explanation:

Slope: 1

please help me :( ill mark you brainliest <3
(maths) 20 points xxx

Answers

Answer:

a) yes

b) could not understand

Answer:

yes

Step-by-step explanation:

the graph is spring through the graph

For the equation 3x = 15, what property do you use to solve it algebraically?

Addition Property of Equality

Subtraction property of Equality

Multiplication Property of Equality

Division Property of Equality

Answers

Answer:

I believe it's "Multiplication Property of Equality"

15 cm
4 cm
cm
V=____cm3

Answers

Answer:

V=(πr^2 x h)/3

lets use π as 3.14 cause I dont know what pi u using

3.14 x 4^2 x 15 = 753.6/3 = 251.2

If you're using π as your pi, than just replace 3.14 by π on calculator

Hope that answers your question

Plz help will mark brainliest

Answers

Answer:

Parallel Line: -1/4x Perpendicular Line: 4x

Step-by-step explanation:

Is y = 5(1.04)* A. growth or B. decay?

Answers

Answer:

growth

Step-by-step explanation:

Answer:

A. Growth

Step-by-step explanation:

There is a 1 in front of 0.04, which also means 104%, so it's an increase, therefore growth. Decay would be below 100%.

I hope this helps you!! ^-^

Please answer I’ll make brainliest. I have other questions too that I’ll be posting shortly

Answers

Answer:

13.3

Step-by-step explanation:

13.3. E eeeeeeihuggufuyfdyyfhccuugfuftxyfyzilycidsitcsitcditidtsfixixsfidfsticsticidffiscifs

What is a nickname for a rotation and what is a nickname for a reflection. Math

Answers

Answer:

reflection-FLIP rotation- SPIN or

TURN

Step-by-step explanation:

Please help me with these 2 questions. 50 points

Answers

Answer:

if you are looking for the area this are the answers

Step-by-step explanation:

4: [tex]125yd^{2}[/tex]

how: .5 x 25 x 10 = 125

/////////////////////////////////////

5: [tex]104m^{2}[/tex]

how: .5 x 16 x 13 = 104

remember to put the ".5" when you are multiplying

I hope this help you

have a good night :)

what solution is -5m=8m-2

Answers

Answer:

m=2/13

Step-by-step explanation:

Given function:

-5m=8m-2

Subtract middle value from both side:

[tex]-5m-8m=8m-2-8m[/tex]

Combine like terms:

[tex]-13m=-2[/tex]

Divide both sides by the same term:

[tex]\frac{-13}{13}=\frac{-2}{-13}[/tex]

Divide the terms:

[tex]=\frac{2}{13}[/tex]

Therefore, m=2/13.

Find the highest common factor of 360 and 900

Answers

Answer:

180

Have a wonderful day!

The first five terms of a sequence are:

4, 20, 100, 500, 2500, ...

What is the common ratio of the function?

Question 6 options:

Answers

Answer:

Step-by-step explanation:

Each number is multiplied by 5 to get the next one

Answer:

Step-by-step explanation:

Plz help due tomorrow if correct ill give brailiest

Answers

It’s c ur correct I believe

Answer:

a is the answer to this question but if I am wrong sorry

Trapezoid: b1 =3m; b2 = 4m
A= 7m 2 What the next missing dimension?

Answers

9514 1404 393

Answer:

h = 2m

Step-by-step explanation:

We can put the given values into the area formula and solve for the missing one.

A = (1/2)(b1 +b2)h

7m²= (1/2)(3m +4m)h

7m² = (7/2)m·h

(7m²)(2/(7m)) = h = 2m

The missing height is 2 m.

what explorer traveled north along the Mississippi river?

Answers

Answer:

water

Step-by-step explanation:

water

+river

what is
x - 18 = -2 ?

Answers

x = 16

Step-by-step explanation:

x-18 = -2

x = -2+18

x = 18-2

x = 16

here ya go hope this helps!

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