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12.4% of burglaries are cleared with arrests. A new policeman is assigned to five different burglaries.
A. What is the probability that at least one of them is cleared with an arrest?
B. What is the probability that the detective clears five burglaries with arrests?
C. What should we conclude if the detective clears all five burglaries with arrests?
Collect on its accounts receivable is 36 with a standard deviation of 11 days. What is the probability that a single AR account takes more than 30 days to collect?
A random sample of 51 observations was selected from a normally distributed population. The sample mean was xbar = 88.6, and the sample variance was s2 = 38.2.
What does r 2 of .73 tell us? Is this a strong or weak correlation? How can you tell?
Recent studies indicate that the typical 50-year-old woman spends $350 per year for personal-care products. The distribution of the amounts spent is positively skewed.
Under what situations must the nonparametric test be used? Describe in detail. Write down the strengths and weaknesses of nonparametric tests?
A final exam in Statistics has a mean of 73 with a standard deviation of 7.73. Assume that a random sample of 24 students is selected and the mean test score of the sample is computed. What percentage of sample means are less than 70?
labour productivity improvements in distribution centrecase studyover the past decade singapores economy has grown by
It is reported in USA Today that the average flight cost nationwide is $342.59. You have never paid close to that amount and you want to perform a hypothesis test that the true average is actually less than $342.59. What are the appropriate hypoth..
Need to find the value of the Test Statistic and calculate the mean squares for regression and error for the following:
Bill is completing a project for you in the marketing department. In conducting his anaysis regarding consumer behavior and a new product that has been released, he tells you the correlation between these two variables is 1.09.
At the 0.05 level of significance, is there evidence to suggest that the population mean waiting time to check out is less than 10.73 minutes?
a researcher conducted an experiment on the effects of a new drug on depression. the researcher had a control group
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