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A survey of subscribers to Forbes showed that 45.8% rented a car during the past 12 months for business reasons, 54% rented a car during the past 12 months for personal reasons, and 30% rented a car during the past 12 months for both business and personal reasons (Forbes 1993 subscriber study).
a) What is the probability that a subscriber rented a car during the past 12 month for business or personal reasons?
b) What is the probability that a subscriber did not rent a car during the past 12 months for either business or personal reasons?
At the .05 level, you are testing whether there is a significant difference in the proportions of college students and similar aged non college students having accidents during the two year period. What is the value of your test statistic.
Do you think that all random samples taken from the same population will lead to the same result?
What percentage of population scored between the mean and Jorge?
Compute the mean, variance and standard deviation for the grouped data. Based on the previous answer, how much could the realtor expect to make if he sells 3 houses?
Test the manager's claim at 5% and 1% significance level tests.
A researcher wishes to forcast the proportion of fish in a perticular lake which is inedible due to pollution of the lake.
Using Sally's estimate of demand that follows, how many T-shirts should she produce for the upcoming event?
A store has an average of 25 people arriving each minute to checkout and each person on the average require 4 minutes to be processed at the checkout. What is the minimum number of cashiers required?
Evaluate true mean delivery time to within 5 minutes at 90% reliability level? Suppose that standard deviation for delivery times is 18.2 minutes.
Find out the probability that at least one of the CD's is defective?
Below are two data sets. Using descriptive statistics, discuss the two data sets in relation to each other. Both data sets come from an operation where potato chips are being placed in small connivance store bags that are to hold 6.0 oz.
Use this information to construct a probability table, and then calculate each of the following probabilities:
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