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In looking at your business, when and why would you want to use a one-sample mean test (either z or t) or a two-sample t-test? Create a null and alternate hypothesis for one of these issues. How would you use the results?
If all samples of size 64 are drawn, mean of sample according to Central Limit Theorem is 100.
Construct the 90% and 95% interval estimates for the population mean weekly sales.
Determine future value of annuity due which has $750 deposited at the starting of each month for 15 years at 5.9% compounded monthly.
The data below shows the time to process an inpatient admission, before and after a system usage training session was given. The following hypotheses were formulated for this study.
Find the percent of a standard Normal model found in the given region. Round to the nearest hundredth of a percent.
Find out optimal assignment and calculate total minimum cost.
What is the probability for the given frequency distribution?
Sixty-four students in an introductory college economics class were asked how many credits they had earned in college, and how certain they were about their choice of major.
Complete the ANOVA table. Carry out a test of hypothesis on each of regression coefficients. Could you delete any of the variables?
At the .10 level of significance, is the coin biased toward heads? Show your decision rule and calculations.
Their resting heart rates were measured. A partial ANOVA table is given.
The probability that a bomber hits a target on a bombing mission is 0.700. Three bombers are sent to bomb a particular target.
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