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The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 107 inches, And a standard deviation of 10 inches. What is the probability that the mean annual precipitation during 25 randomly Picked years will be less than 109.8 inches? A) 0.4192 B) 0.0808 C) 0.5808 D) 0.9192.
What is the probability that the next 100 customers will spend an average of less than $56 on dinner?
Explain the difference between a left-tailed, two-tailed, and right-tailed test. When would we choose a two-tailed test? How can we tell the direction of the test by looking at a pair of hypothesis?
For following set of scores, prepare a frequency distribution, a histogram, and a stem-and-leaf display for each variable. Also calculate the mean, the median and the standard deviation of each score.
Telephone calls arrive at a switchboard in a Poisson process at the rate of 2 per minute. A random one-tenth of the calls are long distance.
Suppose the population is normally distributed they make a decision to do a hypothesis test.
Based on these results, does te diet appear to be effective? Does the diet appear to have practical significance?
Out of a random sample of 33 women, 23 ranked fresh fruit in their top five snack choices. Is there a difference in the proportion of men and women who rank fresh fruit in their top five list of snacks?
A logistic regression model was used to assess the association between CVD and obesity. P is defined to be the probability that the people have CVD.
In each month, the proportion of "Prize" bonds that win a prize is 1 in 11000. There is a large number of prizes and all bonds are equally likely to win each prize.
Find the probability that at most 5 defective bolts will be found in a box of 200 bolts if it is known that 2 per cent of such bolts are expected to be defective.
Both days have sample standard deviations of 3.4. Is the average mean of size different from day 1 to day 2?
Research the topic of Job Satisfaction using the Business Source Premier Database (EBSCO) and/or the ABI Inform Global database in the Library using the instructions linked here.
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