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Deffense [45]
3 years ago
6

PLEASE HELP FAST WILL GIVE BRAINLIEST

Mathematics
2 answers:
Fed [463]3 years ago
5 0

Answer:

b

Step-by-step explanation:

Brrunno [24]3 years ago
4 0

Answer:

b

Step-by-step explanation:

i just did it

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In 2014, the CDC estimated that the mean height for adult women in the U.S. was 64 inches with a standard deviation of 4 inches.
Vladimir79 [104]

Answer:

A. 16%

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 64, \sigma = 4

Which of the following gives the probability that a randomly selected woman has a height of greater than 68 inches?

This is 1 subtracted by the pvalue of Z when X = 68. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{68 - 64}{4}

Z = 1

Z = 1 has a pvalue of 0.84.

1 - 0.84 = 0.16

So the correct answer is:

A. 16%

6 0
3 years ago
The graph shows the distance a car traveled, y, in x hours: What is the rise-over-run value for the relationship represented in
pychu [463]
It goes up 3 and over 5, so 3/5 or .6
3 0
3 years ago
Read 2 more answers
Marcie wants to simplify this expression. Which like terms can she combine?
Crank

The solution is 12 and 3

5 0
3 years ago
Read 2 more answers
I need help with this ASAP!!
Gwar [14]

Answer:

A) 3;  B) 1116 m²; C) 24 m³; D) 1/27

Step-by-step explanation:

A) Scale factor

The scale factor is the ratio of the heights of the two pyramids.

h₂/h₁ = 24/8 = 3

B) Surface area

The ratio of the surface areas is the square of the scale factor.

A₂/A₁ = 3²

A₂/124 = 9

A₂ = 124 × 9 = 1116 m²

The volume of the larger pyramid is 1116 m².

C) Volume

The ratio of the volumes is the cube of the scale factor.

V₂/V₁ = 3³

648/V₁ = 27

648 = 27V₁

V₁ = 648/27 = 24 m³

The volume of the smaller pyramid is 24 m³.

D) Volume ratio

V₁/V₂ = 24/648 = 1/27

The volume ratio is 1/27.

5 0
3 years ago
Add. (5c^5-c) + (c^5 + 7c -2 )
zhuklara [117]

Answer:

Step-by-step explanation:

5c^5-c+c^5+7c-2

add like terms

=6c^5-c+7c-2

subtract like terms

=6c^5+6c-2

=2(3c^5+3c-1)

5 0
2 years ago
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