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Question: On Saturdays, cars arrive at Sami Schmitt's Scrub and Shine Car Wash at the rate of 8 cars per twenty minute interval. Using the Poisson distribution,
(i) find the probability that five cars will arrive during the next five minute interval
(ii) Find the probability that at least three cars will arrive during the next 5 minute interval.
(iii) Find the probability that at no car will arrive during the next 5 minute interval.
A transatlantic plane carries 140 passengers. It is known that the average weight of all passengers on that plane is 147.14 pounds, that the men on that plane weigh on the average 170 pounds, and women 130 pounds. How many men and how many women w..
mimi just started her tennis class three weeks ago. on average she is able to return 15 of her opponents serves. if
Chi-square test for independence of attributes - Describe why a x 2 test of the resulting contingency table is appropriate for such an investigation.
For a population with a mean of μ = 60 and a standard deviation of σ = 24, find the Z score corresponding to each of the following samples.
A sample of 400 individuals participated in the taste test and 80 indicated they like the taste. At a 5% significance level, test to determine if at least 22% of the population will like the new soft drink.
Drug is effective on 89% of women and 65% of men. It is known that 66% of the people who take the drug are women. What is the probability that the drug is effective?
The population standard deviation is known to be 8 minutes. create a hypothesis test to determine if the mean commute time does in fact exceed 40 minutes.
Public transportation and the automobile are 2 methods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes.
A pizza store chain wants to see which pizza toppings customers seem t olike the best. A random sample of people were asked about their pizza preferences.
Compute the mean of the distribution of the sample means and the population mean. What is true about the two values?
Use confidence intervals to determine whether or not (a) we can be 95% certain that the average woman considers herself overweight as compared to her ideal weight.
Testing for Population mean - determine if there has been a significant change in the population mean.
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