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Suppose that a random sample of 100 public owner controlled companies in New Zealand is found to give a mean audit delay of =82.6 days, and assume that ? equals 33 days. Calculate a 95% confidence interval for the population mean audit delay for all publice owner-controlled companies in New Zealand.
suppose the total sample space area in the rectangle denoted as s is all the students on msu campus. let a denote all
Assume a normal distribution applies and alpha = 0.05 (Use Z table), find the Critical value for the alternative hypothesis:
The number of computer interruptions per day at a plan
If a member of this senior class is selected at random, find the probability that the student a) smokes but does not drink alcoholic beverages; b) eats between meals and drinks alcoholic beverages but does not smoke; c) neither smokes nor eats bet..
question 1 x is normally distributed with a mean of 250 and a standard deviation of 40. what value of x does only the
What is the probability that the person will be hospitalized for a drug-related problem, given that the person has received the PMI sheet?
the number of calls received by a phone operator at an emergency department between 10-11am has a poisson distribution
A confidence interval estimate for the population mean is given to be (41.16, 49.85). If the standard deviation is 16.290 and the sample size is 54, answer each of the following (show all work):
How many books should be tested to estimate with 95% to within 0.1 lb, the average force required to break the binding? Assume that sd is known to be 0.8 lb.
There a flu epidemic that is spreading across SF County. You are a principle and are in charge of 32 teachers. You want to plan ahead and be able to estimate how many substitute teachers the school may need during this epidemic.
Your company manufactures low calorie frozen dinners. The advertised calorie content is 200 calories. A consumer activist group, FACT: fat and calories tribunal, is claiming that your product is not consistent.
How large a sample should we take if we wish the 95% margin of error to be plus or minus $15.00. Assume from previous studies that the standard deviation is $120.
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