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Redo given problem using a two-tailed test. Did your results change? Compare the p-values of the two tests. Explain.
Problem An article in BusinessWeek says: "Today companies use a mere 40% of their space." Suppose you want to disprove this claim, suspecting that it is an upward exaggeration. A random sample of the percentage used space for companies is 38, 18, 91, 37, 55, 80, 71, 92, 68, 78, 40, 36, 50, 45, 22, 19, 62, 70, 82, 25. Conduct the test using α = 0.05.
although delays at major airports are now less frequent ithelps to know which airports are likely to throw off your
Forty-four percent of consumers with credit cards carry balances from month to month. five consumers with credit cards are randomly selected. What is the probability that all consumers carry a credit card balance?
Critically evaluate the article by examining the worthiness of the survey. In your discussion, cover the following items: purpose of survey, why was it conducted, for who was it conducted, and was it based on a probability or nonprobability sample..
late payment of medical claims can add to the cost of health care. an article reported that the mean time from the date
Assuming the requirements of ANOVA are satisfied, at the .05 level of significance, is there evidence of a significant difference among the mean wait times at the five checkpoints?
What parametric test could be used to test for the effect of linoleic acid on SBP? Perform the test in Problem 1, and report a p-value. What nonparametric test could be used to test for the effect of linoleic acid on SBP?
What is the F critical value to be used at the 0.05 level of significance with 7 numerator degrees of freedom and 12 denominator degrees of freedom?
a researcher is considering using 90 confidence interval for his research project instead of 95. what happens to the
How Large a sample is needed to estimate the true proportion of homeowners who have vegetable gardens to within 3 percentage point 92% confidence.
The following data represent the service charge for direct-deposit customers if a customer's account falls below the minimum required $1,500 balance for a sample of 26 banks.
From the given research, compare the major players better at batting than 20 years ago using five step hypothesis.
a set of sample scores from an experiment has an n 30 and an xobt 19.a. can we reject the null hypothesis that the
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