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The ADJO Sheriff's Department has reviewed its booking times for its urban jail. Booking an inmate usually requires only a few hours until prisoners are appropriately incarcerated. Depending upon the speedi- ness of the jailers and administrators and the amount of time required for booking, ADJO has noticed that it usually takes an average of 3 hours to complete the booking process, with a standard deviation of half an hour. Based on these data, answer the following questions:
a. What is the probability that booking will require less than 2 hours?
b. What is the probability that booking will require between 2 and 5 hours?
c. What is the probability that booking will require more than 5 hours?
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?
a large clinical trial of the effect of diet on breast cancer assigned women at random to either a normal diet or a
The question relates to Basic Statistics and it discuss about the common reasons for choosing non-parametric test over parametric alternative
Administrative staff based at a business school in the UK are advised to take a 15 minute break from their personal computer after working on it for 90 minutes continuously. A random sample of 36 staff revealed that, one average a break was taken aft..
An Excel Spreadsheet is reprinted below. Interpret the t-test results. Are they statistically significant?
a certain brand of candies have a mean weight of 0.8608g and a standard deviation of 0.052 bsed on a sample of a
Describe how the confidence intervals will change depending on whether the population standard deviation is known or unknown.
What is the probability that a randomly selected student will have a score of 80 or higher? If there were 97,680 students with scores higher than 91, how many students took the test?
we know that the average life of a light bulb is 10000 hours. there are 12 light bulbs in a classroom. in order for a
The registrar of a college with a population of N=4,000 full-time students is asked by the president to conduct a survey to measure satisfaction with the quality of life on campus.
How would you explain the analysis of variance, assuming that your audience has not had a statistics class before?
a physician claims that 13.6 of all pregnant females smoke during their pregnancy. a random sample of 400 pregnant
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