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Find the left and right critical values from the appropriate table for a 95% confidence interval for the mean when the sample size is 23.
Find at least what percentage of all homeowners in this city pay a monthly mortgage of 865 to 1,675.00.
Small bag of Skittles candies has following assortment: red (12), blue (5), orange (15), brown (0), green (16), and yellow (7). Create the probability distribution for x.
Explain the difference between the null and alternative hypothesis. Which one can be proven in a statistical sense?
Comparison of paired and unpaired samples test - Identify which of the two tests (Independent samples and Paired samples) test is the preferred test and justify your choice.
Which of the t-test methods are you going to use and why? Formulate the null and alternative hypothesis. Determine the criterion for rejection or nonrejection of the null. What is the t-statistic for this analysis
The athletic director claims that the atendance is the same as last year. What is the test value needed to evaluate the claim?
Find out coefficient of correlation between variables. Interpret the value.
An estimate is needed of the mean acreage of farms in Manitoba, Canada. The estimate should be correct to within 100 acres with probability 0.95. A preliminary study suggests that 500 acres is a reasonable guess for the standard deviation of farm ..
When using past data, I have found that the proportion of items rejected by quality control personnel is about 3%. We normally make 5000 items per day. For a p chart, what are the upper and lower control limits?
Determine the sample size necessary to estimate a population proportion to within .03 with 90% confidence assuming you have no knowledge of the approximate value of the sample proportion.
Choice of exponential smoothing constant w has little or no effect on forecast values using exponential smoothing.
A survey is being planned to determine the mean amount of time corporation executives watch television. A pilot survey indicated that the mean time per week is 12 hours, with a standard deviation of 3.0 hours.
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