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In 1999, a sample of 200 in-store shoppers showed that 42 paid by debit card. In 2004, a sample of the same size showed that 62 paid by debit card. (a) Formulate appropriate hypotheses to test whether the percentage of debit card shoppers increased. (b) Carry out the test at a = .01. (c) Find the p-value. (d) Test whether normality may be assumed.
They found that those with higher levels of cigarette use had lower GPAs, and vice versa. What can you rightfully conclude from this? Why? Be specific about what this kind of information may indicate and mean.
1.you decide to test a friend for esp using a standard deck of 52 playing cards. such a deck contains 13 spades 13
In 1978, the CPI for Canada was 43.6, but in 1988, the CPI was 84.8. What was the geometric mean annual increase for the period?
What is the probability that the person will be the last to leave the bank assuming no other customers arrive? Explain your answer fully.
A stock price is currently $100. Over each of the next two three-month periods, it is expected to increase by 10% or fall by 10%. Consider a six-month European call option with a strike price of $105.
Last school year, student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classificati..
According to the hypothesis that the current year's seed does not meet the 85% germination rate standard at the 5% level of significance. What is the corresponding test statistic value?
would you favor or oppose providing a path to citizenship for illegal immigrants in the U.S if they met certain requirement including a waiting period, paying fines and back taxes, passing criminal background checks and learning English? What is the ..
Significant amount of improvement took place? Assume pulse rates are normally distributed. Test using = 0.05. Determine which test statistic applies, and calculate it.
What is the probability that he can open the lock at random if he knows that the numbers in the combination cannot be repeated?
A person purchases a package of 10 ball-point pens which, unknown to the purchaser, contains 4 defective pens. Of the first 2 pens used by the purchaser
Do these simulated data provide evidence for us to conclude that a difference in the spinal canal cross sectional area exist between the population of subjects with disc hernination and a population of those who do not have disc hernation?
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