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Assume the random variable x is normally distributed, with mean u= 74 and standard deviation q=8. Find the indicated probability.
30- P (x < 55)
To give 98% confidence interval for population mean μ, you would use critical value.
Given that the mean of all 102 atomic numbers is 51.794, and the population standard deviation is 29.804, what is the probability that the mean of the 40 atomic numbers selected by the student will be at least 57.3?
an airline has a policy of booking as many as 23 persons on an airplane that can seat only 22. past studies have
Discuss an example where you would use a test of hypothesis for in your professional life, personal life, education or politics. Provide sufficient details so that the context is clear and also discuss if the example involves:
the average gasoline price of one of the major oil companies has been 3.00 per gallon. because of shortages in
in a data communication system several messages that arrive at a node are bundled into a packet before they are
Overall, 230 people correctly guess which is the low calorie product. Is there evidence of a difference in taste between the two products?
several psychology students are unprepared for a surprise truefalse test with 11 questions and all of their answers or
Based on your answers to a through d, decide whether or not to reject the null hypothesis at the given significance level. Explain your conclusion in the context of the problem.
The 30 members of an orchestra were asked how many instruments each could play. The results are set out in the frequency distribution. Calculate the mean number of instruments played:
an instructor has given a short quiz consisting of two parts. for a randomly selected student let x the number of
The following table provides the weight in grams of a sample of 50 bags produced in one hour by a single machine: Compute the arithmetic mean and median.
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