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A population consists of the following 0,0,1,3,6.
a. List all samples of 3 and compute the mean of each sample
b. Compute the mean of the distribution of sample means and population mean. compare the two values
c. Compare the dispersion in the population with that of the sample mean.
Also how do you use exel to find the samples of 3?
What sample size should be chosen so that there is 0.95 probability of estimating the mean monthly income in $150 or less?
A commuter travels many miles to work each morning. She has timed this trip 5 times throughout the last month. The time (in minutes) required to make this trip was 44, 39, 41, 35, and 41.
Suppose among 312 large city residents sampled, 65 refused to cooperate. What is the margin of error at the 95% confidence level.
Find a 95% confidence interval for the mean amount of money µ spent at the waiter's tables.
Construct three scatter plots for: (1) percentage alcohol versus calories, (2) percentage alcohol verses carbobydrates, and (3) calories versus carbohydrates
Difference in the mean number of times men and women order take-out dinners in a month? What is the p-value?
To test whether the significant difference between two proportion test using large sample test.
The following show the hours of sleep on weeknights for a sample of individuals age 49 and younger and for a sample of individuals age 50 and older.
How large a sample should be taken if the desired margin of error E is:
What the information do z-scores give that actual heights do no?
What is the standard error of measurement for the test? What range of scores would you expect an individual who made 54 on the test to make on another test of similar difficulty? Assume you want to be 68% accurate in your estimate.
A point estimate for the difference between the mean purchases of the users of the two credit cards is:
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