Height of 10th grade boys is normally distributed with a mean of 63.5 in. and a standard deviation of 2.9 in . The area greater than the -score is the probability that a randomly selected 14- year old boy exceeds 70 in . What is the probability that a randomly selected grade boy exceeds 70 in.? Use your standard normal table​

Answers

Answer 1

Answer:

Step-by-step explanation:

Use a calculator with probability distribution functions built-in:

normalcdf(70, 10000,63.5,2.9) = 0.013 (a little over 1%)


Related Questions

PLSS HELP THE TEACHER IS ASKING FOR MY ANSWERS CUZ I WAS SUPPOSED TO DO IT AND I NEVER WAS PREPARED PLSSS HELP IM NEXT AND CAN SOMEONE PLS TELL ME WHAT TO DRAW LIKE SHADE? A PIC OF EVERYTHING SHADED AND DRAWN WOULD BE RLLY NICE TYSM HAVE A GOOD DAY! BUT PLS HELPP

Answers

Answer:

shading,

Step-by-step explanation:

do shading to the fraction supposed to be, eg: 1\4 here we have four parts divided and 1 is to be shaded as it gives 1 out of 4 okay? or 2\8 here in 8 divided parts only shade 2 as it's given. I hope it's right!!

Shading, I hope that’s the correct answer

Share 60 in the ratio 6:4​

Answers

Answer:

36:24

Step-by-step explanation:

6+4=10

60/10=6

6*6:4*6

=36:24

(3x+1)−(6x−4) A.)−3x+5 B.)2x C.)3x−3 D.)−3x−3

Answers

A

Hope this helped!

:T

A triangle has an area of 72 square feet. The height is 12 feet. What is the length of the base (in feet)?

Answers

Answer:

6ft

Step-by-step explanation:

we went over this in class

Factor the following :

Answers

Answer:

(6x - 7y)(6x + 7y)

Step-by-step explanation:

36x² - 49y² ← is a difference of squares and factors in general as

a² - b² = (a - b)(a + b) , then

36x² - 49y²

= (6x)² - (7y)²

= (6x - 7y)(6x + 7y)

Answer:

(6x + 7y)(6x - 7y)

Step-by-step explanation:

36x² - 49y²

= (6x)² - (7y)²

= (6x + 7y)(6x - 7y)

In this question we used the identity-

a² - b² = (a + b)(a - b)

If the standard deviation of a data set were originally 8, and if each value in
the data set were multiplied by 1.75, what would be the standard deviation of
the resulting data?
A. 6
B. 8
C. 14
D. 2

Answers

The correct answer would be C. or 14

The 5th-grade teachers had 445 Starbursts. They wanted to evenly distribute them among the 208 5th grade students. How many Starbursts would each student receive?

Answers

2 whole starbursts , but if you want exactly how many, it’s 2.13 starbursts each

PLEASE PLEASE PLEASE PLEASE HELP MEEEE PLEASE I BEG

Answers

I think 5,8 if not I’m srry

Step-by-step explanation:

(4, 8)

they already give you your Y so if you find the middle between the bank and hospital and then find the number for the X theres your answer. That was confusing but im unsure how else to explain it ;-; sorry

PLS DO THIS ASAP!!!!! do the ones that are boxed and the ones with the Xs dont do!
This is due in 5 mins pls do!!! will give brainiest and 5 points

Answers

Answer:

10 19/24, 4 9/16, 3 11/15

Step-by-step explanation:

15. 15 4/24 - 4 9/24 = 10 19/24

13. 8 3/16 - 3 10/16 = 4 9/16

17. 6 5/15 - 2 9/15 = 3 11/15

The diameter of a circle is 12 cm. Find its circumference in terms of pi

Answers

Answer:

37.68

Step-by-step explanation:

to get radius divide diameter by 2.

formula for circumference is 2×r×pi.

since we already have the diameter we don't need to ÷ by 2 to get the radius because then we would have to multiply it back again.

pi=3.14.

12×3.14=37.68.

Can I please have Brainliest?

7th grade math7th grade math7th grade math7th grade math7th grade math7th grade math7th grade math7th grade math7th grade math7th grade math7th grade math7th grade math7th grade math7th grade math7th grade math7th grade math7th grade math7th grade math7th grade math

Answers

Ok chill I’ll help u either a or b
The answer is A. It would be 8/50, which can be simplified to 4/25.

A sociologist randomly selects single adults for different groups of​ three, and the random variable x is the number in the group who say that the most fun way to flirt is in person. Determine whether a probability distribution is given. If a probability distribution is​ given, find its mean and standard deviation. If a probability distribution is not​ given, identify the requirements that are not satisfied.

Answers

I have attached the complete question.

Answer:

Mean; μ = 1.648

Standard deviation;σ = 0.8610

Step-by-step explanation:

From the image attached, we can see that the probabilities given under the p(x) column are;

0.091

0.334

0.408

0.166

Let's find out if these values give a probability distribution.

ΣP(x) = 0.091 + 0.334 + 0.408 + 0.166

ΣP(x) ≈ 1

Their sum is approximately 1 and they are all between 0 and 1. Thus, it is a probability distribution.

Mean is found by;

μ = ΣxP(x)

From the table attached, x = 0, 1, 2, 3

Thus;

μ = (0 × 0.091) + (1 × 0.334) + (2 × 0.408) + (3 × 0.166)

μ = 1.648

Standard deviation is given by;

σ = √[Σ(x - μ)²•P(x)]

σ = √[((0 - 1.648)² × 0.091) + ((1 - 1.648)² × 0.334) + (2 - 1.648)² × 0.408) + ((3 - 1.648)² × 0.166)]

σ = 0.8610

ANSWER
DO NOT SEND A LINK I WILL REPORT ​

Answers

Answer:

Hope i got them all

Step-by-step explanation:

1W

1W B1

1W B2

1W B3

1W R1

1W R2

1W B1 B2

1W B1 B3

1W B1 R1

1W B1 R2

1W B2 B3

1W B2 R1

1W B2 R2

1W B3 R1

1W B2 R2

1W B1 B2 B3

1W B1 B2 R1

1W B1 B2 R2

1W B1 B3 R1

1W B1 B3 R2

1W B1 R1 R2

1W B1 R1 B2

1W B1 R2 B3

there are more possibilities if you can do the same collor twice for example 1W 1W

Or B2 1W B2 1W

PLEASE I WILL GIVE EXTRA POINTS AND BRAINLIEST I PROMIS!!!!!!! I AM DESPERATE PLEASE I AM BEGGING YOU!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

If you comment fractions I will do them!

Step-by-step explanation:

Across:

A = 46

E = can't see the fraction

H = 2111

I = 64

J = 29

L = can't see the fraction

P = 55005

R = can't see the fraction

S = 21

T = 49

U = 308

V =129

X = can't see the fraction

Y = 4008

Z = 15

BB = 375

EE = 65

FF = 16

GG = 64

Down:

B = 600

C = can't see the fraction

D = 316

G = can't see the fraction

H = can't see the fraction

K = 9520

L = 15010

N = 299

O = 59

Q = 518

T = 4116

U = 333

V = 1006

W = 189

AA = 55

CC = 71

DD = 56

#5 Kristen needs to earn $320 in commission this week. She earns 8% of
what she sells at the electronics store. How many dollars worth of
merchandise does she need to sell? Round to the nearest dollar. *

Answers

Hi I’m someone new here and I really don’t know the answer but I’ll ask my 29 year old smart sister :)

Whats:

1+1

I need help immediately, please.

I'm struggling and freaking out.

Answer as soon as possible.

Answers

Answer:

2

Step-by-step explanation:

hdjxjdbdjdnekzneisbd

Answer:

1+1=2

Step-by-step explanation:

lol, i hope this helped.

brainliest please? :)

Need help! Have a good day

Answers

Answer:

Use the website www.bartley.com !!! I has helped me a lot and its actual teachers/tutors who answer your questions in about 30 minutes :)

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

y= 1/2x +8

hope this helps

What is the answer and how to answer

Answers


DONT CLICK THE LINKS

How does making a frequency table or line plot help you see which value occurs most often in a data set?

Answers

Answer:

A frequency table and a line plot show which value occurs most often. this is done by labeling every value. The person can clearly see the organized layedout numbers in a frequency table or line plot.

Step-by-step explanation:

If you have any questions feel free to ask in the comments.

I NEED HELP PLS!! it shouldnt be too hard bc im in 6th grade

Answers

Answer:

2x + 1

Step-by-step explanation:

That person added everything together that was shown which is incorrect. You shouldn't add the 12x + 3 as that should be the end result. You add 3x + 3x + 4x + 2 to get 10x + 2. You then subtract that by 12x +3 which is 2x + 1

y
20
15
10
5
5
10
15
20
X

Answers

Answer:

y=25=x

Step-by-step explanation:

Does anyone know how to do this

Answers

Answer:

the reason is they are equal to each other because they are both right angle triangle

8 more than twice a number is 18.

Answers

Answer:

18 + (18 more than) 2x (twice a number) = (is) 8

18+2x=8

2x=-10 (subtract 18 from both sides)

x=-5 (divide both sides by 2)

not my work

Question 7: Find the value of x. The numbers below are in degrees.
140
S
50
20

Answers

Given:

A figure.

To find:

The value of x.

Solution:

Draw two parallel lines as shown in the below figure.

If a transversal line intersect two parallel lines, then alternate interior angles are same.

[tex]a=20[/tex]              (Alternate interior angle)

[tex]d=b[/tex]              (Alternate interior angle)           ...(i)

The value of angle d is

[tex]d=50-a[/tex]

[tex]d=50-20[/tex]

[tex]d=30[/tex]

Using (i), we get

[tex]b=30[/tex]

If a transversal line intersect two parallel lines, then same sides interior angles are supplementary angles.

[tex]c+140=180[/tex]

[tex]c=180-140[/tex]

[tex]c=40[/tex]

Now,

[tex]x=b+c[/tex]

[tex]x=30+40[/tex]

[tex]x=70[/tex]

Therefore, the value of x is 70.

A basketball player makes 80​% of free throws. The random numbers below represent 20 trials for a simulation. Let the numbers 0 to 7 represent a made free throw and let 8 to 9 represent a missed free throw. Use this simulation to estimate the probability that the player makes both free throws.

Answers

Answer:

65%

Step-by-step explanation:

its not 75

hope this helps! :>

A local school needs to paint the floor of its theater room, where the length of the floor, x, is at least 12 feet. The width of the floor is 4 feet less than the length. It will have a stage and a closet, and the remaining area of the floor will be painted. The dimensions are shown in the diagram:


Let A represent the painted area, in square feet, of the floor. Choose the correct equation to solve for area (A).


A = x(x − 4) − 0.5(8)(x − 4) − 4(8)

A = x(x − 4) − (8)(x − 4) − 4(8)

A = x(x − 4) + (8)(x − 4) + 4(8)

A = x(x − 4) + 0.5(8)(x − 4) + 4(8)

Answers

Step-by-step explanation:

here .................

Answer:

A. A = x(x - 4) - 0.5(8)(x - 4) - 4(8)

Step-by-step explanation:

Total area:

A(t) = x(x - 4)

Area of the stage:

A(s) = 0.5(8)(x - 4)

Area of the closet:

A(c) = 4(8)

Area to be painted:

A = A(t) - A(s) - A(c)A = x(x - 4) - 0.5(8)(x - 4) - 4(8)

Correct choice is A

Can someone please help me

Answers

Answer:

C/7 = 20

Step-by-step explanation:

Find the volume of the rectangular prism.
45 cm
15 cm
25 cm

Answers

Answer:

16875cm³

Step-by-step explanation:

45x15x25= 16875cm³

plz mark me as brainliest.

Answer:

15 cm trust me its right because I've don't this question in school

what is r if r-24=6 jhhjjhjhhjhj

Answers

Answer:

r=30

Step-by-step explanation:

r-24=6

r=6+24

r=60

The mathematical expression 2 ∈ V means:

Answers

It could be nonsense without any more context…

But more likely than not, V is understood to be some set of numbers, in which case the statement "2 ∈ V" means "2 belongs to the set V".

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