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A credit bureau analysis of undergraduate students' credit records found that the average number of credit cards in an undergraduate's wallet was 4.09 ("Undergraduate Students and Credit Cards in 2004," Nellie Mae, May 2005). It was also reported that in a random sample of 132 undergraduates, the sample mean number of credit cards that the students said they carried was 2.6. The sample standard deviation was not reported, but for purposes of this exercise, suppose that it was 1.2. Is there convincing evidence that the mean number of credit cards that undergraduates report carrying is less than the credit bureau's figure of 4.09?
the following summary table presents the results from a repeated-measures anova comparing three treatment conditions.
statistics are tools which can hep business perform many business functions. please choose one of the following
Assume that both polls used samples of 560 people. Determine the number of people in the sample who said "more strict" in February 1999.
question 1 8 marks the australian divorce rate has been steadily increasing over the years until late 1990s. however
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
Find the percentage of girls on probation for violent crimes and the percentage of boys on probation for violent crimes, and compare them.
Biology and Environmental Science Peregrine falcons were placed on the U.S. Endangered Species list in the 1970s. Their population dwindled primarily.
Compare 2 moving averages using MSE and compute Exponential smoothing. The subsiquent data which represents demand for company ABC's products for the last 10 months.
To what extent might one ascribe the success and slipping fortunes of French Connection to the FCUK personality?
gender of childrena. if a couple plans to have eight children find the probability that they are all od the same
a constant pressure pistoncylinder has 1 kg of saturated liquid water at 100kpa. a rigid tank contains air at 1200k
A consumer magazine randomly selected 100 new hybrid car dealers from across the country, and created a list of retail prices. They want to know if the price differs from $25,000.
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