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A company executive has read with interest the finding that the average U.S. office worker receives 36 e-mails per day.
Assume that an executive, wishing to replicate this study within her own corporation, directs information technology personnel to find out the number of e-mails each of a sample of 100 office workers received yesterday, with the results as provided in the data file XR02019.
Generate a frequency distribution and histogram describing this information and comment on the extent to which some workers appeared to be receiving an especially high or low number of e-mails.
You are advised to first perform the appropriate hypothesis test using pencil and paper, along with a calculator and statistical tables, and then use your working to answer the questions below.According to the Australian Bureau of Statistics, the qua..
Write the null hypothesis in mathematical form; and in plain English. Write the alternative hypothesis in mathematical form; and in plain English. State the model assumption(s) and assess them.
What is the probability that the birthdays of 7 people will fall on 7 different days of the weeks, assuming equal probabilities for the seven days?
A random variable X follows a normal distribution with standard deviation 13. A random sample of 30 individuals is selected from the population, and a confidence interval for is calculated to be (87.348, 96.652). What is the confidence level for t..
What is the normal curve probability of exceeding this score? How do you interpret the relationship between the data sets? What does this suggest about our equal pay for equal work question?
How many cases of relays and capacitors should Harkin Electronics produce during that period? If your answer is in fractional units of cases that is acceptable - do not round to whole number of cases.
An alternative has a discounted project cost of $5,215,000 with no salvage value. The estimate was in constant dollars and the discounting used mid-year factors. While the period of analysis is 4 years, the alternative only provides benefits f..
1. Hydrology is the scientific study of the movement, distribution, and quality of water. Hydrologists have shown that the distribution of long duration (e.g. monthly or yearly totals) of such things as river discharge or rainfall is often app..
What is the mean and standard deviation (SD) for preoperative T score for CVLT Acquisition - distribution of scores for the postoperative CVLT Retrieval T scores is normal, the middle 68% of the patients had T scores between what two values?
Create a histograms for variable height-pull up Graph
Toss the coin four times. If the coin lands either all heads or all tails, reject Ho: p=1/2 (the p denotes the chance for the coin to land on heads.) Complete parts a and b. a. what is the probability of a type 1 error for this procedure? b. if p=4/5..
Calculate a 95 percent confidence interval for m. Can National Motors be 95 percent confident that m is less than 60 ft? Explain.
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