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A new elevator in a large hotel is designed to carry about 30 people, with a total weight of up to 5000 ibs. More than 5000ibs. Overloads the elevator. The average weight of guest, at this hotel is 150 ibs, with an SD of 55 iibs. Supposes 30 of the hotel's guests get into the elevator. Assuming the weights of these guests are independent random variables, what is the chance of overloading the elevator? Give your approximate answer as a decimal.
A researcher claims that the average age of people who buy lottery tickets is 70. A sample of 30 is selected and their ages are recorded as shown below. The standard deviation is 16. At alpha = 0.05 is there enough evidence to reject the researche..
Using assumed true population percentages of 2%, 3%, 4%, 5%, 6%, and 7%, plot the power curve for the test in given Exercise.
Determine the probability that Mexican American male in the 20 -74 age range has serum cholesterol value greater than 240 mg/dl.
What tensions emerged in the Southwest that threatened to lead the United States into a war with Mexico? On what grounds did President James K. Polk ask Congress to declare war on Mexico?
Voters. Suppose that in your city 37% of the voters are registered as Democrats, 29% as Republicans, and 11% as members of other parties.
the independent newspaper tabulated the gender of all candidates running for election in the 1992 british general
a researcher obtains data for witchxbar1nbsp16.63 s1nbsp1.42 n112xbar2nbsp17.93 s2nbsp3.16 n2181 control group2
Assume each shot is independent of the others. If she shoots 6 arrows, what's the probability of each result described below. Her first bull's-eye comes on the third arrow.
Compare the real value of 1994 income with the income shown for 1997. Was the average household better or worse off in 1997 compared with 1994?
A sales manager for an advertising agency believes that there is a relationship between the number of contacts that a salesperson makes and the amount of sales dollars earned. What is the dependent variable
a company pays its employees an average of 15.90 an hour with a standard deviation of 1.50. if thh wages are normally
Using your selected best-fit model, forecast and plot your estimated female labor force participation rate for the years 1992-2002
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