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A sample of 84 golfers showed that their average score on a particular golf course was 89.05 with a standard deviation of 3.47.
Answer each of the following (show all work and state the final answer to at least two decimal places.):
(A) Find the 98% confidence interval of the mean score for all 84 golfers.
(B) Find the 98% confidence interval of the mean score for all golfers if this is a sample of 115 golfers instead of a sample of 84.
(C) Which confidence interval is smaller and why?
If absolute value of test statistic is less than critical value in hypothesis test decision is to?
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Consider the following data for two independent random samples taken from two normal populations. What is the 90% confidence interval estimate of the difference between the two population means?
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Find the 90%, 95% and 99% confidence intervals for the proportion of all voters who favor the issue. How many more voters should we include in the sample if we need to reduce the margin of error by half?
The city council of Pine Bluffs is considering increasing the number of police in an effort to reduce crime. Before making a final decision,
Suppose you bid $12000. What is the probability that your bid will be accepted?
The impact of campaign film on attitudes toward a political candidate was investigated. Prior to showing the film, the attitudes of 15 people toward the candidate were assessed using a political likability scale.
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