Standard error of the mean

Reference no: EM1312519

In order to estimate the average time spent on the computer terminals per student at a local university, data were collected for a sample of 81 business students over a one week period. Assume the population standard deviation is 1.2 hours.

A) The standard error of the mean is

B) With a 0.95 probability, the margin of error is approximately

C) If the sample mean is 9 hours, then the 95% confidence interval is

Reference no: EM1312519

Questions Cloud

Probability of drawing cards : We have a deck of 52 playing cards. What is the probability of drawing?

Examining and predicting results of an experiment : On the basis of these results, advance a hypothesis about the cause of the phenotype. Based on your hypothesis, what do you predict would happen to developing T cell in an HD mouse which has been made transgenic for a TCR restricted to I- A b .

Estimating probability values based on discrete distribution : There are two telephone lines A and B. Let E1 be the event that line A is being used and E2 be the event that line B is being used

Transfer of immunologically competent t-lymphocytes : Give a mechanistic explanation for finding which is consistent with all the data. Explain your reasoning

Standard error of the mean : Assume the population standard deviation is 1.2 hours. The standard error of the mean is:

Function of muscles or musculature : The digastric and omohyoid muscles are similar in that they both have________. Suprahyoid, Two bellies, 60

Determining operating cash flow : Find out the operating cash flow (OCF) for Kleczka, Inc., based upon the following data. (All values are in thousands of dollars.)

Assumption of t-test : When the p-value is used for hypothesis testing, the null hypothesis is rejected if

Adjusting journal entries and partial balance sheet : On jan 1 07 daniels company contained these liability accts. Accts payable 42,500 Sales tax payable 6,600 Unearned service revenue 19,000 During january

User Account

All Pages