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The number of customers entering a store on a given day is Poisson distributed with mean λ = 10. The amount of money spent by a customer is uniformly distributed over (0, 100). Find the mean and variance of the amount of money that the store takes in on a given day.
Tourism is one consideration for Coffee Time's future. A survey of 1,233 visitors to Mumbai last year revealed that 110 visited a small café during their visit.
Setermine the probability that a specific driver had exactly two violations?
Using a 0.01 level of significance, test the claim that the tutoring has an effect on the math scores.
A final exam in Statistics has a mean of 73 with a standard deviation of 7.73. Assume that a random sample of 24 students is selected and the mean test score of the sample is computed. What percentage of sample means are less than 70?
Historically, it is known that the score has a Normal distribution and a standard deviation of 180. Set up the null hypothesis and the alternative hypothesis. Calculate the test statistic and find the p-value.
Provide a brief description of the main features of these data from the scatter plot and Describe why you would use performance as the predictor variable and performane related pay as the dependent variable in such a model.
A population has a mean of 53 and a standard deviation of 21. A sample of 49 observations will be taken what is the probability that the sample mean will be greater than 57.95?
Considering that the probability of event C is .44, of event D is .20, and the probability of their intersection is .088, determine whether C and D are dependent or independent events.
Public transportation and the automobile are two methods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes.
Determine the rejection region for the hypothesis Ho : mean D= 0 if H a : mean D > 0. Use a = 0.01. z>
If an apartment is selected at random, what is the probability that it is not a 2 bedroom apartment on the 2nd floor?
Electric utility customer service representative answers a call is 210 seconds. The Gigantic Kilowatt Energy Company randomly sampled 30 calls and found that, on average, they were answered in 183 seconds with a population standard deviation of 30..
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