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A typical college student spends an average of 2.4 hours a day using a computer. A sample of 13 students at IUP revealed the following number of hours per day using the computer. Can we conclude at a 98% level of confidence, that the mean number of hours per day using the computer by students at IUP is the same as the typical student's usage?
3.15 3.25 2.20 2.40 2.65 2.95 2.75 2.85 2.95 2.45 1.95 2.35 3.85
Establish a 99% Confidence interval about the difference in the proportion of the town voters and county voters who favor the proposal.
If employee is chosen at random, determine the probability that employee is female and salaried staff? Choose the best answer from the following.
They decide to sample some fast-food restaurants currently operating to estimate the monthly cost of electricity. They want to be 90% confident of their results and want the error of the interval estimate to be no more than $100.
What is approximately the largest sample mean of another sample of n= 16 participants you would expect to obtain from this finite population?
Conduct a one-tailed hypothesis test for the mean at the .025 significance level. State the null and alternative. State the critical value. Draw a diagram. Provide the computation of the test statistics. State your decision in terms of the null hy..
Using a level of significance of .05, is there evidence that the dual degree students are receiving lower grades? Explain.
What is predicted value for National Health Expenditure as a % for 2010? What is the 95% confidence interval for your estimate? Does the trend continue? Does year impact expenditure?
Determine the probability in big class that both sections are covered? Only one section? Neither section? Determine the expected number of sections covered?
The data is shown on the table. Is there a difference in mean SBP between treatments? Run the appropriate test at α= 0.05
Below, explicitly state slope of your trend line and describe what value of slope signifies in terms of this context.
Find out the critical value for the given degrees of freedom of the F-test also the lower-tailed critical value of F test for the similar level of significance
Is there significant evidence that this production run doesn't meet specifications? Use a 1% level of significance.
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