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The heights and shoe sizes of the starting lineup of a tournament baseball team are listed below.
Use a calculator to determine the correlation coefficient.
Using a significance level of α=0.05, determine if there is a significant linear correlation between the heights and shoe sizes of the baseball team.
Height (in)
70
72
68.5
72.5
70.5
71
69.5
73
67
Shoe Size
11
13.5
12.5
13
12
14
10.5
Data on distribution of cost for building effort, design work and testing effort.
Using WSJ or IBD look up the following stocks: General Electric, General Motors, Microsoft and Intel and answer the following questions for each stock. You may have to refer to several issues of your newspaper for all of the information if the pap..
In 1992, FAA conducted 86,991 pre-employment drug tests on job applicants who were to be engaged in safety and security-related jobs, and found that 1,143 were positive.
The following data show levels of fertilizer use (lbs) and wheat yield (bushels) on repeated trials on a six acre plot.
Develop percent frequency distribution and construct bar chart and pie chart.
Infomercials often peddle products under the guise of "studies show," While some of the products are surprisingly good, many aren't.
Test hypothesis that annual incomes of corporate trainers in areas of more than 500,000 are considerably more than those in areas of less than 100,000. Make use of the 5% level of risk.
Last year the average deposit for all 10,000 clients was $25,000 with a standard deviation of $30,000. Do you think a small sample of 25 is enough to give them the margin of error they want? If not, how large a sample do you suggest they need to t..
A nationwide real estate company claims that its average time to sell a home is 57 days. Suppose it is known that the standard deviation of selling times is 12.3 days and that selling times are normally distributed.
A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a 1-hour flight is .02. What is the probability that:
On a test with a population mean of 75 and standard deviation equal to 16, if the scores are normally distributed, what percentage of scores fall below a score of 83.8?
The formula for a 95% confidence interval yields the interval 640 ± 5.88. Find out whether each of the given statements is true or false.
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