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Based on the U.S. Bureau of Justice data, 16% of persons arrested are women. If 400 arrest cases are randomly selected, estimate the probability to 4 decimal places that more than 70 women were arrested. Use the approximation of the binomial distribution.
the number of cracks in a section of interstate highway that are significant enough to require repair is assumed to
A Myrtle Beach resort hotel has 120 rooms. In the spring months, hotel room occupancy is approximately 75%. What is the probability that at least half of the rooms are occupied on a given day?
Find a dataset: approximately 30-100 scores or observations. Write a null and alternative hypothesis, conduct a statistical significance test (in SPSS or Excel), and tell what decision you'd make about the null hypothesis, and why.
By law of averages. Bystander suggests him to quit, on ground that his luck is cold. Who is correct? Or are both of them wrong?
What is the probability that two of absent students were girls.What is the probability that two of absent students were boys.
Consider the relationship between yearly wine consumption (litres of alcohol from drinking wine per person) and yearly deaths from heart disease (deaths per 100,000 people) in 19 developed countries.
A company has been using the same advertising strategy for a number of years and over that time has had relatively constant monthly sales.
The NAEP test was also given to a sample of 1077 women of ages 21 to 25 years. Their mean quantitative score was 275. Take it as known that the standard deviation of all individual scores is = 60.
An instructor has a test bank consisting of 300 easy true-false questions, 200 difficult true-false questions, 500 easy multiple choice questions and 400 difficult multiple choice questions.
a weight lifter puts an x-pound weight on each side of a bar. a weight 5 pounds heavier than the first is then added to
Your population mean has always been 9 customers per hour. The sample standard deviation is 4. The sample size is 25. The sample mean is 8.
Based on the data, determine the 95 percent confidence interval evaluate for true population mean?
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