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Acetaminophen is an active ingredient found in more than 600 over the counter and prescription medicines, such as pain relievers, cough suppressants, and cold medications. It is safe and effective when used correctly, but taking too much can lead to liver damage. A researched believes the amount of acetaminophen in a particular brand of cold tablets, contains a mean amount of acetaminophen per tablet different from the 600mg claimed by the manufacturer. A random sample of 30 tablets had a mean acetaminophen content of 596.3 mg with a standard deviation of 4.7 mg. A. is the assumption of normality reasonable? ExplainB. construct a 99% confidence interval for the estimate of the mean acetaminophen content. C. what does the confidence interval found in part (b) suggest about the mean acetaminophen content of one pill? Do you believe there is 600 mg per tablet? Explain.
What is the upper limit of the 95% interval? Give your answer to three decimal places. Which of the following assumptions should be checked before constructing the above confidence interval?
Explain briefly and in nontechnical language what "a significant difference (P
The weekly dollar demand and supply functions for tents, t, are given by the following respective formulas:
The mean number of tasks completed successfully by all teams each day and the standard deviation is computed. The results are given below. The ANOVA F-test statistic value is?
Shown below are rental and leasing revenue ?gures for of?ce machinery and equipment in the United States over a seven-year period according to the U.S. Census Bureau. Use these data to run a linear regression and then forecast the rental and leasi..
Why does the sample size play such an important role in reducing the standard error of the mean? What are the implications of increasing the sample size?
If no more than 5% of the containers are to weigh less than 15.80 oz., what must the standard deviation of the weights equal?
It's estimated that 57% of Americans live in households with 1 or 2 people, 32% live in households with 3 or 4 people and 11% live in households with 5 or more.
The latter is a random variable (any function of a random variable is a random variable). So what"s the corresponding fact about conditional expectation?
A health researcher is interested in determining whether or not the speed at which people walk is related to their cholesterol levels. He picks 100 adult volunteers at random, checks their cholesterol levels, and then times each one while they wal..
Find the value of the standard of the error of the mean in each of the following cases (use the finite population correction factor if appropriate.
Consider a multinomial experiment involving n = 300 and k = 5 cells. The observed frequencies resulting from the experiment are shown in the accompanying table, and the null hypothesis to be tested is as follows:
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