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A recent broadcast of a television show had a 10 ?share, meaning that among 5000 monitored households with TV sets in? use,10?% of them were tuned to this program. Use a 0.01 significance level to test the claim of an advertiser that among the households with TV sets in? use, less than 15?% were tuned into the program. Identify the null? hypothesis, alternative? hypothesis, test? statistic, P-value, conclusion about the null? hypothesis, and final conclusion that addresses the original claim. Use the? P-value method. Use the normal distribution as an approximation of the binomial distribution.
On the basis of the data provided, can you conclude that online gambling is more prevalent among individuals who are under the age of 30 at a level of significance of 0.05? Why or why not? (Show all seven steps of the appropriate hypothesis test.
In an area having sandy soil, 50 small trees of a certain type were planted, and another 50 trees were planted in an area having clay soil. Let X = the number of trees planted in sandy soil that survive 1 year and Y = the number of tree..
1. How many of the 25 male students in the gymnastics class fall in the 70- to 74-inch height class?
The number of people living on American farms declined steadily during the past century. Here are data on the farm population
Consider the many possible distributions of grades on a quiz in a statistics class; imagine that the grades could range from 0 to 100.
Use the multiple regression equation to predict the total body weight for a female athlete who is 62 inches tall and has 21% body fat.
6. Suppose that you draw a single card from a standard deck of 52 playing cards. a. What is the probability that this card is a diamond or club?
A manufacturer claims that the mean lifetime, , of its light bulbs is 49 months. The standard deviation of these lifetimes is 9 months. Seventy bulbs are selected at random, and their mean lifetime is found to be 46 months.
Suppose a fast food restaurant wishes to estimate average sales volume for a new menu item. The restaurant has analyzed the sales of the item at a similar outlet and observed the following results:
in a test of the drug lipitor 16.7 of the subjects treated with 10mg of atorvastatin experienced headaches. assume 60
in a study to investigate the effect of the color paper blue green orange on response rates for questionnaires
Conduct a hypothesis test to determine whether the mean starting salary for business majors in 2013 is greater than the mean starting salary in 2012.
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