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A medical test for a certain disease is known to have sensitivity 98% ( probability of giving positive result to a carrier of the disease) and 92% specificity ( probability of giving negative result to a non-carrier of the disease). 4% of the population carries the disease. If an individual tests negative for the disease find the probability that the individual is not a carrier of the disease.
Recall that the trash bag manufacturer has concluded that its new 30 gallon bag will be the strongest such bag on the market if its mean breaking strength is at least 50 pounds.
Lakewood Fashions must decide how many lots of assorted ski wear to order for its three stores. Information on pricing, sales. What decision should be made by the conservative?
Do you think this statement has any merit? Why or why not? Explain why the manager may have said it and then further substantiate his argument or compose a rebuttal.
A nationwide real estate company claims that its average time to sell a home is 57 days. Suppose it is known that the standard deviation of selling times is 12.3 days and that selling times are normally distributed.
Find out the sample size raised by mean also standard deviation, a sampling distribution may approach among which of the following values.
A sample of 350 lenses and found 5 lenses with surface defects. Formulate an appropriate test for the qualification of the polishing machine using an α = 0.05."
Discuss the link between the estimate and the parameter in the context of an hypothesis test. Be sure to reference the appropriate steps of the five step process in your response, based on the steps below:
1.a small college has 500 freshmen 400 sophomores 350 juniors and 300 seniors. they wish to conduct a survey of their
suppose a study estimated the population mean for a variable of interest using a 99 confidence interval. if the width
Normal distribution with mean 35 minutes and standard deviation 2 minutes. On 95% of occasions the mailing preparation takes less than _______ minutes.
Estimate the probability that the machine will overflow an 8 oz cup.
a simple random sample of size n40 is drawn from a population. the sample mean is found to be x with the line above it
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