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Police response time to an emergency call is the difference between the time the call is first received by the dispatcher and the time a patrol car radios that it has arrived at the scene. Over a long period of time, it has been determined that the police response time has a normal distribution with a mean of 8.1 minutes and a standard deviation of 1.9 minutes. For a randomly received emergency call, find the following probabilities. (Round your answers to four decimal places.)
(a) the response time is between 5 and 10 minutes
(b) the response time is less than 5 minutes
(c) the response time is more than 10 minutes
Finding the value of test statistic utilizing two-tail 't' test also interpret the result. The Commercial Bank as well as Trust Company is studying the use of its automatic teller machines.
Suppose that the risk of allergies for the children of nonsmokers is 0.15. What is the risk of allergies for the children of smokers?
Need guidance on how to approach a statistics paper. Problem: utilize statistics to solve a business related problem. The synopsis should include a discussion of the specific problem, the research methodology used, the quantitative and qualitative..
Hypertensive experimental (n=100) is 14%, placebo (n=100) is 22%. Generate a 95% Confidence interval for difference in proportions of patients with hypertension between groups.
The life span of a battery is normally distributed, with a mean of 2500 hours and a standard deviation of 50 hours. What percent of batteries have a life span that is more than 2590 hours?
A pharmaceutical company has determined that if a new cholesterol-reducing drug is manufactured (introduced to the market) the following probability distribution will describe this drug's contribution to the company profits during the next six mon..
Make use of normal probability distribution features of EXCEL to help determine the probability.
A summary of data (deposits in thousands of dollars) from the survey is as follows: First National 1 = 4.1, σ1 = 1.2; City National 2 = 3.5, σ2 = 0.9. Use a 98% confidence interval to estimate the difference in the mean weekly deposits into IRAs f..
The 90 percent confidence interval for the population mean is to (Round your answers to 3 decimal places.) Would it be reasonable to conclude that the population mean is 22 eggs? What about 24 eggs?
The average cost of a renting a compact size car in a major metropolitan area is R51.74 with a standard deviation of 7.48. Assume a normal distribution.
Determine the probability distribution for X defined as number of defective items drawn (Hint: You have to determine P(X=0), P(X=1) and P(X=2).
What is the probability that he will answer all questions correctly?
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