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Suppose that the weights of airline passenger bags are normally distributed with a mean of 47.56 pounds and a standard deviation of 3.08 pounds.
What is the probability that the weight of a bag will be greater than the maximum allowable weight of 50 pounds? Give your answer to four decimal places.
Let X represent the weight of a randomly selected bag. For what value of c is P(E(X) - c < X < E(X) + c)=0.81? Give your answer to four decimal places.
Assume the weights of individual bags are independent. What is the expected number of bags out of a sample of 20 that weigh greater than 50 lbs? Give your answer to four decimal places.
Assuming the weights of individual bags are independent, what is the probability that 5 or fewer bags weigh greater than 50 pounds in a sample of size 20? Give your answer to four decimal places.
a distribution with a mean of micro 62 and a standard deviation of s 8 is transformed into a standardized distribution
A study sponsored by American Express Co. and the French government tourist office found that old American stereotypes about French unfriendliness weren't true.
The grades on the midterm given in a large managerial stats class are normally distibuted with mean 75 and standard deviation 9. Instructors of this class wants to assign an A to top
A poll found that 38% of male voters and 46% of female voters support a particular candidate. To test whether this candidate has equal levels of support between male and female voters, the null hypothesis should be:
the total blood cholesterol concentrations in mgdl are shown below for a random sample of six people. in the table
byers and williams 1987 studied the impact of temperature the independent variable on the viscosity the response of
Write the claim mathematically and identify H0 and Ha (b)Find the critical value(s) and identify the rejection region(s). (c) Find the standardized test statistic.
Since he has not attended class recently, he doesn't know any of the answers. Assuming that he guesses on all 10 questions, find the following: What is the probability that he will answer all ten questions incorrectly?
Create a scatter plot for those data. Based on scatter plot, how would you explain relationship between the two variable.
Why is statistical significance not necessarily of practical important difference to a business decision? Give an example and explain.
real estate apperaiser may use simple or stratifief sampling technigue to drawn random samplegenrate a random sample
Twelve students randomly selected from the entering class of college had the following SAT scores in math and English population mean=500, sigma=100
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