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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.
What is the 95% confidence interval estimate of the mean television viewing time per week during the 8:00 p.m. to 11:00 p.m. time period?
The number of phone calls coming into a switchboard in the next five minutes will either be 0, 1, or 2. The probabilities are the same for each of these (1/3).
Draw suitable distribution curve indicating position of the TS and CV.
The management of White Industries is considering a new method of assembling its golf cart. The present method requires 42.3 minutes, on the average, to assemble a cart.
The standard deviation of 0.01 inches. What is the probability that a randomly selected pencil will be less than 0.285 inches?
Steve Goodman, production foreman for the Florida Gold Fruit Company, estimates that the average sale of oranges is 4,700 and the standard deviation is 500 oranges. Sales follow a normal distribution.
Carry out a Z test using the five steps hypothesis testing with a two-tailed test at the .05 significance level, and make a drawing of the distributions involved.
Calculate the correlation coefficient, coefficient of determination. Check whether there is a relation between correlation coefficient and coefficient of determination.
A market survey was conducted to estimate the proportion of homemakers who would recognize the brand name of a cleanser based on the shape and color of the container. Of the 1,4000 homemakers sampled, 420 were able to identify the brand by name.
Make three-month and four-month moving averages for this time series. Does the three-month or four month moving average provide the better forecast? Explain.
Let X be the number of successes at UZ. What is the distribution of X? What is the asymptotic distribution of your estimate from (d)?
Standard deviation of 5. suppose 100 golfers played the course today. Find the probability that the average score of the 100 golfers exceeded 74.
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