Mathematics, 28.05.2021 21:20, savannaflorian5141

According to data from 2015, women's shoe sales in the US are roughly normally distributed by shoe size with a mean of size 8 and a standard deviation of 1.25 sizes. a) If a women's shoe sold in the US is a size 7.5, what is the z-score?

b) What size of women's shoe would have a z-score of 1.3?

c) If a women's shoe sold in the US is a size 9, what is the z-score and percentile? z-score:
Percentile:

d) What size of women's shoe would have a z-score of -1.5? What percentile is that? shoe size:
Percentile:

e) What women's shoe size represents the 80th percentile? z-score:
shoe size:

Answers: 3

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 19:40, josecano2

Which of the following could be the ratio of the length of the longer leg 30-60-90 triangle to the length of its hypotenuse? check all that apply. a. 313 6 b. 3: 215 c. 18: 13 d. 1: 13 e. 13: 2 of. 3: 15

Answers: 3

continue

Mathematics, 21.06.2019 21:30, jstringe424

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )

Answers: 3

continue

Mathematics, 21.06.2019 22:30, laura1649

What is the common difference for this arithmetic sequence? -6,-2,2,6,10 a.4 b.5 c.3 d.6

Answers: 1

continue

Mathematics, 21.06.2019 23:10, ineedhelp2285

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.

Answers: 1

continue

Do you know the correct answer?

According to data from 2015, women's shoe sales in the US are roughly normally distributed by shoe s...