# Project #16557 - Statistics

Q1 : In a sample of 51 game show contestants, the mean winnings amount is \$9,820 with a standard deviation of \$1,750.

A. Create a 99% confidence interval estimate for the mean winnings amount for game show contestants. Use formulas and a chart.

B. With 0.05 significance, test the claim that the mean winnings amount for game show contestants is above \$9,000. Use P-Vale method and formulas.

C. With .10 significance, test the claim that the standard deviation in winnings amount is \$1,800. Use the critical value method.

D. Use your calculator to create a 95% confidence interval estimate for the mean winnings amount if you know that the population standard deviation is \$3,020. Interpret your answer.

Q 2).Under what circumstances is it appropriate to use a z-score to create a confidence interval for a population mean? List all requirements.

Q3). The TI Calculators cannot run a hypothesis test for which parameter?

Q4). You are studying the mean height of 10-year-old boys. How many boys should you measure to be 95% confident that the sample mean is within .08 inches of the actual mean? Preliminary studies indicate that the population standard deviation is 2.1 inches.

Q5). In a sample of 42 garden statues in a city, 31 are gnomes.
a. Use your calculator to test the claim that the proportion of garden statues that are gnomes is not .7.Use .05 significance.

b. Use formulas to create a 90% confidence interval estimate for the proportion of garden statues that are gnomes.

Q 6). Find the P-value for a 2-tailed hypothesis test with the test statistic z =2.26 .

 Subject Mathematics Due By (Pacific Time) 11/10/2013 11:00 pm
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