1. Assume that the heights of 2,000 male students of JRU are normally distributed with a mean 65.0 inches and standard deviation of 3.0 inches. In 100 samples consisting of 25 students each, what would you be the expected mean and standard deviation of the resulting sampling distribution of means if sampling were done a. With replacement? b. Without replacement?

1. Assume that the heights of 2,000 male students of JRU are normally distributed with a mean 65.0 inches and standard deviation of 3.0 inches. In 100 samples consisting of 25 students each, what would you be the expected mean and standard deviation of the resulting sampling distribution of means if sampling were done a. With replacement? b. Without replacement?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Q. No. 1. Use following sample home prices ($000s) to answer the questions: 175.0 48.8 995.9 298.0 2325.0 209.0 218.9 628.3 111.0 212.3 212.6 958.0 a) What is the sample median home price? b) Do the data contain any outliers? c) Determine variance and standard deviation. d) Develop a Box Plot for the home prices. [02] [02] [03] (03]
According to one study, brain weights of men are normally distributed with a mean of 1.10 kg and a standard deviation of 0.12 kg. Use the data to answer parts (a) through (e). Click here to view page 1 of the table of areas under the standard normal curve. Click here to view page 2 of the table of areas under the standard normal curve. a. Determine the sampling distribution of the sample mean for samples of size 3. Interpret your answer in terms of the distribution of all possible sample mean brain weights for samples of three men. The mean of the sample mean is µ, kg. (Type an integer or a decimal. Do not round.) The standard deviation of the sample mean is o, = kg. (Round to four decimal places as needed.) Interpret these answers in context. For the brain weights have a normal distribution with a mean of kg and a standard deviation of kg. (Type integers or decimals rounded to four decimal places as needed.) b. Repeat part (a) for samples of size 12. The mean of the sample mean is µ;…
13. Given the list of the first quarter average of selected fifteen (15) Grade 11 Arts and Design Track students; Find the sample mean, sample variance and sample standard deviation. Xx 86.6 88.1 81.4 89.01 88 93.7 85 86.7 95 89.02 90.03 91 94.07 86 90
The scores of individual students on the American College Testing (ACT), a college readiness assessment, have a Normal distribution with a mean of 18.6 and a standard deviation of 6.0. At Northside High, 36 seniors take the test. Assume the scores at this school have the same distribution as national scores. What is the mean of the sampling distribution of the sample mean score for a random sample of 36 students? 0 1 0 6
1. A researcher plans to conduct a survey among students in a public high school. If the population of thisschool is 5,000, find the sample size and the percentage from the N population. (Margin of error is 5%)A = {9,10,11,7,13}B = {10,10,10,10,10}C = {1,1,10,19,19}a. Calculate the mean of each data set.b. Calculate the standard deviation of each data set.c. Which set has the largest standard deviation?
Answer the following
2. At the general hospital, the waiting times (in minutes) before seeing the doctor were recorded. A sample of 10 patients was surveyed recently and their waiting times are shown below: 13 15 23 22 19 16 23 17 18 25 Calculate the mean, standard deviation and coefficient of variation.
Suppose I want to sample the household incomes for EBR parish. Let's say I start with a simple random sample of 100 residents and calculate the sample mean. How would the sampling distribution of change if I increase the sample size to 1,000 residents?
2. Ms. Palac, a sociologist, made a study on the age in years of a woman at the time of her first marriage. She randomly selected a sample of 24 and 21 married women from Village A and Village B, respectively. The following data are the mean and standard deviation for each group: Village A: x = 18.63 and s = 5.54 Village B: x = 24.90 and s = 5.54 Test the hypothesis that the women in Village A get married younger than women in Village B. Use 0.10 significance level. Step 1: Null and Alternative Hypothesis Ho: Ha: Step 2: Level of Significance and appropriate test statistic Step 3: Determine the Critical Region Degrees of Freedom (df): Critical Region: Step 4: Compute the z or t value Computations: Step 5: Decide whether to accept or reject Ho Step 6: Conclusion