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Mystery tool. You need to choose which tool to use. We are not going to tell you. You are trying to determine if the deposit cycle time of check clearing has improved from year one to year two. In order to determine this, Quick Turn Around Bank has collected data in terms of cycle time performance for each of its branches. In this case, data was collected in a random fashion by randomly assigning each branch a number 1-11, and then collecting which test should be employed to determine if year two was truly better than year one. The performance time is shown below in days. Which tool?
Instructions:
1. Write the null and alternative hypotheses.
2. Calculate the test statistic.
3. Determine the critical value whether or not there has been an improvement.
4. Determine if there has been an improvement from year 1 to year 2.
6. Write up your conclusion.
5. Test at 95% confidence.
Determine the percentage of households that have a credit card debt of more than $13,000.
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We could then perhaps form a linear regression by charting the points of IQ for each person and their mother on a graph to determine if a correlation can be made between the IQ score of the individual and the IQ score of the mother. If the scores ..
You are thinking of employing a t-procedure to test hypotheses about the mean of a population using a significance level of 0.05.
You are given the sample mean and the sample standard deviation. use this information to construct the 90% and 95% confidence intervals for the population mean.
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In a sample of 20 men, the mean height was 178 cm. In a sample of 30 women, the mean height was 164 cm. What was the mean height for both groups put together?
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