subject
Mathematics, 05.07.2020 14:01 rhyanebean6443

Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for aluminum alloy sheets of a particular type, its mean value and standard deviation are 70 GPa and 1.6 GPa, respectively. A) If X is the sample mean Young's modulus for a random sample of n 16 sheets, where is the sampling distribution of X centered, and what is the standard deviation of the X distribution?B) Answer the questions posed in part (a) for a sample size of n - 256 sheets. C) For which of the two random samples, the one of pat(a) or the one of part (b), is x more likely to be within 1 GPa of 70 GPa? Explain. 1. X is more likely to be within 1 GPa of the mean in part (a). This is due to the increased variability of X that comes with a smaller sample size.2. X is more likely to be within 1 GPa of the mean in part (b). This is due to the decreased variability of X that comes with a larger sample size. 3. X is more likely to be within 1 GPa of the mean in part (a). This is due to the decreased variability of X that comes with a smaller sample size. 4. X is more likely to be within 1 GPa of the mean in part (b). This is due to the increased variability of X that comes with a larger sample size. Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for metal sheets of a particular type, its mean value and standard deviation are 70 GPa and 2.3 GPa, respectively. Suppose the distribution is normal. A) Calculate P(69 SXS 71) when n = 16. B) How likely is it that the sample mean diameter exceeds 71 when n = 367.

ansver
Answers: 3

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 19:00, william03300
Aflower has 26 chromosomes. to create a new flower, how many would a sperm cell have what is called?
Answers: 1
image
Mathematics, 21.06.2019 20:10, jaidencoolman2866
In the diagram, points d and e are marked by drawing arcs of equal size centered at b such that the arcs intersect ba and bc. then, intersecting arcs of equal size are drawn centered at points d and e. point p is located at the intersection of these arcs. based on this construction, m , and m
Answers: 1
image
Mathematics, 21.06.2019 23:40, averycipher
Which point-slope form equation represents a line that passes through (3,-2) with a slope of -4/5
Answers: 1
image
Mathematics, 22.06.2019 01:00, aatharris21
Azul has 4 green picks and no orange picks. you add orange picks so that there are 2 orange picks for every 1 green pick. how many picks are there now.
Answers: 1
You know the right answer?
Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for alum...

Questions in other subjects:

Konu
Mathematics, 26.10.2021 17:40
Konu
Mathematics, 26.10.2021 17:40