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Hypothesis testing of single mean large sample test.
The mean return for the random sample of 33 mutual funds is 14.93 percent with a standard deviation of 9.57. Test the null hypothesis: H0: mu = 15% at α = 0.05.
a. Reject H0
b. Fail to Reject H0
By using the maximax criterion, what decision should be made by the decision maker?
Find the probability of failure of system for any 4 hours of operation?
Compute β-error of test in part (a) if true difference in mean burning rate is 2.5 centimeters per second.
Determine the class with the greatest number of data values.
What is your conclusion? Are the two variables independent?
Let be the average of the pay you receive for the first and second week. Find the sampling distribution
The mean amount of time a (unnamed) computer server is down is 18.3 minutes with a standard deviation of 5.7 minutes.
what sample size should be used in the funding decision study? Use σ = $4000 as a planning value. ________________
If statistically significant, do you think the difference is large enough to be important?
Calculate the value of Pearson correlation. Illustrate what information is provided by the numerical value of the Pearson correlation.
Support colour-coding on packaged food to indicate healthier options
Compute standard error of mean? Compute the margin of error, with 95% confidence.
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