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LT Microsoft® Excel® Exercises. Use Microsoft® Excel® and the data file Real-Estate Data to prepare answers to the following assignments:
A. At the 5% significance level is there a difference in the mean selling price of a home in the different townships?
B.. Develop a contingency table that shows whether a home has a pool and the township in which the house is located. Is there an association between the variables "pool" and the "township"? Use .05 level of significance.
C, Develop a contingency table that shows whether a home has an attached garage and the township in which the house is located. Is there an association between the variables "attached garage" and the "township"? Use 0.05 level of significance.
State the null and alternative hypothesis. population standard deviation is $2500 and level of test is 0.05 what is the critical value?
Two pain relief drugs are being considered. A random sample of 6 doses of the first drug showed that the average amount of time required before the drug was absorbed into the bloodstream was ??
A statistical analysis of 1,000 long-distance calls made from the headquarters of the Bricks and Clicks Computer Corporation indicates that the length of these calls is normally distributed with μ = 240 seconds and σ = 40 seconds.
The sample mean is 2.59 and the sample standard deviation is .66. Conduct the following test using 95% level of confidence.
The manufacturer would like to establish inventory levels such that there is only a 2.5 percent chance of running out of stock. Where should the manufacturer set the inventory levels?
A sample of size 36 results in a sample mean of 7.1. The value of the test statistic is ____
Suppose we have a population with the mean of 100 and a standard deviation of 28.We take repeated samples of size 49 and calculate the mean of each sample to form a sampling distribution. Find the mean and standard deviation of the sampling distrib..
A researcher discovers the number of parking tickets that a group of students have received during their driving careers. Twenty students reply and they have received between 9 and 20 parking tickets.
If you were to conduct right-tailed hypothesis test at 5% significance level, you choose the critical value this way. Assuming that the null hypothesis is true
How many independent network servers would be needed if each has 99 percent reliability? (b) If each has 90 percent reliability?
If you buy a box of Wisk, the probability of getting a scoop is 97%. If you buy 9 boxes over the next several months, what is the probability of missing two scoops?
A shoe salesman want to see if his female customers have a preference in the color of shoe purchased. What is the test value for the following data?
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