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In a certain city of several million people, 5.4% of the adults are unemployed. If a random sample of 245 adults in this city is selected, approximate the probability that more than 15 in the sample are unemployed. Use the normal approximation to the binomial with a correction for continuity.
Round your answer to at least three decimal places. Do not round any intermediate steps.
the 70-year long-term record for weather shows that for new york state the annual precipitation has a mean of 39.81
Which of the following exam scores should lead to the better grade?
The Weschsler IQ test has a μ =100 and a σ = 15. A vitamin company said if people took vitamin X for 30 days their IQ would improve. A simple random sample of 49 people took the vitamins for 30 days. They then took the IQ test. The mean IQ of the ..
Using a level of significance of .10, is there evidence that the dual degree students are receiving lower grades? Fully explain your answer.
List all possible combinations of opinions that can be held by students A, B, and C. (Hint: There are eight possibilities.) Then give the probability of each of these outcomes. Note that they are not equally likely.
Give an estimate of this common popualtion variance by pooling the sample variances given. Give an estimate of this common population variance based on the variance of the sample means given.
Metabolic rate and body mass for caterpillars. Does the general relationship between metabolic rate and body mass described in Example 28.10 hold for tobacco hornworm caterpillars? The Minitab output (see page 28-24) was obtained by regressing the..
The following table describes the estimated green power sales by renewable energy in 2008: Develop a bar chart, pie chart, and Pareto Chart.
You are investigating the flight characteristics of different kinds of birds. You collect a sample of 33 European swallows (Hirundo rustica) and measure their air-speed velocity in a borrowed wind tunnel.
The annual report of Dennis Industries cited these primary earnings per common share. What is the arithmetic mean primary earnings per share of common stock and The variance?
What is the probability that less than four candies in a given box are red?
question the financial aid office of a university asks a sample of students about their employment and earnings. the
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