Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for metal sheets of a particular type, es mean value and standard deviation are85 GPa and 2 GPa, respectively. Suppose the distribution is normal. (Round your arswers to four decimal places.)A USE SALT(a) Calculate PM s*s ne) when a- 16,(b) How ikely is it that the sample mean diameter exceeds 86 when n-257You may need to use the appropriate table in the Appendix of Tables to answer this question.

Given data Mean μ = 85 GPa Standard deviation ? = 2 GPa a) P(84 ≤ X̅ ≤ 86) for n = 16 is given by

Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for metal sheets of a particular type, ts mean value and standard deviation are 85 GPa and 2 GPa, respectively. Suppose the distribution is normal. (Round your anawers to four decimal places.) A USE SALT (a) Calculate P4 sRSs6) when a- 16, (b) How likely is it that the sample mean dameter exceeds when n 257 You may need to use the appropriate table in the Appendix of Tables to answer this question.

Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for metal sheets of a particular type, ts mean value and standard deviation are 85 GPa and 2 GPa, respectively. Suppose the distribution is normal. (Round your anawers to four decimal places.) A USE SALT (a) Calculate P4 sRSs6) when a- 16, (b) How likely is it that the sample mean dameter exceeds when n 257 You may need to use the appropriate table in the Appendix of Tables to answer this question.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

An ecologist is studying the impact of local polluted waters on the growth of alligators. The length of adult male alligators typically follows a normal distribution with a standard deviation of 2 feet. The ecologist wants to estimate the mean length of this population of alligators. Suppose she samples n alligators at random and uses the sample mean, X to as an estimator for u. a. What is the bias and variance of the estimator? (Note, these may be a function of n.) b. If n = 4, what is the probability that the estimator is within one foot of the true mean? (I.e. find P(|X – µ| < 1). c. What sample size, n, is required for the estimator to be within one foot of the true mean with 95% probability? (I.e. find the value of n that satisfies P(|X – µ| < 1) = 0.95.) d. Suppose the ecologist ends up sampling n = 9 alligators and calculates a sample mean of ī = 10.4 feet. Construct a 95% confidence interval for the population mean. e. Give an interpretation for the interval obtained in (d).
The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 71 minutes and a standard deviation of 16 minutes. Suppose one person at the hot springs is randomly chosen. Let X = the amount of time that person spent at Grover Hot Springs . Round all answers to 4 decimal places where possible.c. The park service is considering offering a discount for the 6% of their patrons who spend the least time at the hot springs. What is the longest amount of time a patron can spend at the hot springs and still receive the discount? minutes.
Help!!
Solve for C
sisin, 2 Calculate Quartile Deviation and its Coefficient from the following data : Weight (in pounds) 140 150 160 120 122 124 126 130 No, of Students 1 1 3. 10 Solutian
A population has a meanu= 157 and a standard deviation o= 27. Find the mean and standard deviation of the sampling distribution of sample means with sample size n= 54. The mean is µ; = |, and the standard deviation is o; = (Round to three decimal places as needed.)
The mean is 146 and the standard deviation is 35. A score of 41 is how many z-scores below the mean?
A population has a mean of 200 and a standard deviation of 90. Suppose a simple random sample of size 125 is selected and is used to estimate μ. Use z-table. a. What is the probability that the sample mean will be within 18 of the population mean (to 4 decimals)? b. What is the probability that the sample mean will be within 16 of the population mean (to 4 decimals)?
1. The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 76 minutes and a standard deviation of 16 minutes. Suppose one person at the hot springs is randomly chosen. Let X = the amount of time that person spent at Grover Hot Springs. Round all answers to 4 decimal places where possible.A. Find the(IQR) for time spent at the hot springs.Q1, Q3 IRQ: minutes 2. The average American man consumes 9.5 grams of sodium each day. Suppose that the sodium consumption of American men is normally distributed with a standard deviation of 1 grams. Suppose an American man is randomly chosen. Let X = the amount of sodium consumed. Round all numeric answers to 4 decimal places where possible.B. The middle 20% of American men consume between what two weights of sodium? Low___High____
Select the correct answer below: p-value>0.10 0.05< p-value <0.10 0.01< p-value <0.05 p-value <0.01
8,10
Look at this histogram of heights from the GSS, which happens to be a case where a variable is relatively close to Normally-distributed (Normal curve laid atop for reference). Although it is tough to “eyeball” standard deviations, I am going to give you a list of values that could possibly describe one standard deviation of this distribution. Only one is even in the “ballpark”. Please select it based on your knowledge of Normal distributions. a. One inch b. Four inches c. 20 inches d. 50 inches