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Question: Attending church. A 2006 Gallup Poll found that 40% of American adults say they attended religious services last week. This is almost certainly not true.
(a) Why might we expect answers to a poll to overstate true church attendance?
(b) You suspect strongly that the true percentage attending church in any given week is less than 40%. You plan to watch a random sample of adults and see whether or not they go to church. What are your null and alternative hypotheses? (Be sure to say in words what the population proportion p is for your study.)
Let R be a relation on all real numbers x, y such that x is related to y if and only if x^2
The probability that home sales will increase in the next 6 months is 0.25. The probability that the interest rates on loans will go up in the same period is estimated to be 0.74.
The average score of all pro golfers for a particular course has a mean of 70 and a standard deviation of 3.0. Assume 36 golfers played the course today. Find the probability that the average score of the 36 golfers exceeded 71.
Find the probability that in tonight game he misses for the first time on his fifth attempt.- makes his first basket on his fourth shot.
a life insurance company wants to update its actuarial tables. assume that the probability distribution of the
The sample service times (in minutes) are 5.2, 7.5, 4.8, 11.4, 9.8, 10.5, 8.2, 11.0, 12.0, 8.5. Find the total expected loss per customer. If the restaurant expects 2000 customers monthly, what is the expected monthly loss?
The study measures owners' satisfaction with the design, content, layout, and performance of their new vehicles. A file entitled APEAL2 contains the satisfaction ratings for 2008 for each make of car.
A group of students at a school takes a history test. The distribution is normal with a mean of 25, and a standard deviation of 4. (a) Everyone who scores in the top 30% of the distribution gets a certificate.
Plot the four separate time series and describe any trends in the separate time series. Do the trends appear to imply a narrowing in the differences between male and female math scores?
suppose the scores on an examination are normally distributed with a mean of 45 and a standard deviation of 8.what is
Assume that we will randomly select a sample of 64 measurements from a population having a mean equal to 20 and a standard deviation equal to 4.
A random sample of 13 drivers who drive to work is selected. Use the binomial probabilities table (Table I of Appendix B) or technology to find to 3 decimal places the probability that the number of drivers in this sample of 13 who regularly excee..
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