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You need to estimate the mean number of travel days per year for pharmaceutical sales representatives. The mean of a small pilot study was 125 days with a standard deviation of 14 days. If you must estimate the population mean within 2 days, how many sales representatives in the pharmaceutical industry should you sample? Use the 90% confidence interval.
Summarize in words each of the following findings: The Tukey test was significant at .01 for two groups (A and E).
What is the probability that at least 8 of the next 15 errors are due to operator errors? What is the probability that no more than 3/10 failures are due to operators?
If he succeeds he will obtain 2000 US dollars. suppose that thief currently has 1500 US dollars in his pocket. Compute expected value of this undertaking.
Make up the ages of a group of participants who are freshman, sophomores, juniors, and seniors. You will need the age of 10 participants across each level.
Which study has the higher probability of a Type II error, the 60-subject study or the 100 -subject study? Which study has higher power?
Why do you think it is significant to describe both the measure of central tendency and the measure of dispersion when talking about a data set?
what is the required sample size is the error is to be less than 1/2 hour with a 95% level of confidence?
0.8 of all college students like the idea of a new curriculum. If we select 87 students (ASSUME INDEPENDENCE), what is the Standard Deviation of the Probability Distribution that would list the number of students.
A female student wants to determine whether or not students at the college like the cafeteria's food. Why might the results of this survey be inaccurate?
A researcher believes that the percentage of people who exercise in California is greater than the national exercise rate. The national exercise rate is 20%. The researcher gathers a random sample of 120 individuals who live in California and find..
Now assume that failed items are not replaced during the test. UsingHandbook H--108, determine the plan assuming the time to failure is exponential.
Determine probability that student was sophomore? Determine the probability of selecting a face card from deck of 52 cards.
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