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Through a telephone survey, a low-interest bank credit card is offered to 400 households. The responses are as tabled.
a) Develop a joint probability table and show the joint and marginal probabilities.
b) What is the probability of a household whose income exceeds $40,000 and who rejects the offer?
c) If income is ≤ $40,000, what is the probability the offer will be accepted?
d) If the offer is accepted, what is the probability that income exceeds $40,000?
e) Are income and level and whether an offer is accepted independent? Explain.
You are going to play 2 games of chess with an opponent whom you have never played against before (for the sake of this problem).
If 0 or 1 of the sampled parts are found to be defective, the shipment is accepted, otherwise the shipment is rejected.
Construct a 90% confidence interval estimate of the mean number of migraine attacks for people treated with acupuncture. Show all work.
Suppose that (unknown to you) the mean score of those taking the MCAT on your campus is 25.0.
question 1 in a sample of 150 auto occupants 86 wore seatbelts. in a sample of 200 truck occupants 74 wore seatbelts.
The Mean of the Sample Standard Deviations is different than the corresponding Population Parameter.
The probabilities are 0.40, 0.50, and 0.10 that, in city driving, a certain kind of compact car will average less than 28 miles per gallon, from 28 to 32 miles per gallon, or more than 32 miles per gallon.
Draw the scatter diagram. Does it appear that x and y are related? If so, how? Test to determine whether there is evidence of a linear relationship.
How much greater is the percent of senior citizens who attend a play at least once per year than the percent of people in their twenties who do so?
You must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures:
Suppose there are 26 events at a swimming and diving meet. What is the probability that the first false start will occur at this meet
When doing this calculation, do not round the numerator or the denominator. Round the final answer to the hundredths place.
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