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Are more Internet users downloading podcasts? Refer to the previous two exercises. The ratio of the proportion in the 2008 sample to the proportion in the 2006 sample is about 2.7.
(a) Can you conclude that 2.7 times as many people are downloading podcasts? Explain why or why not.
(b) Can you conclude from the data available that there has been an increase from 2006 to 2008 in the number of people who download podcasts? If your answer is no, explain what additional data you would need or what additional assumptions you would need to be able to draw this conclusion.
Bulloch County has never allowed liquor to be sold in restaurants. However in 3 months, county residents are scheduled to vote on a referendum to allow liquor to be sold by the drink.
Depict the situation as a game with incomplete information, in which each type of each player is indexed by the number of e-mail messages he has received.
calculate the mean and variance for each portfolio's returns
The number of defects in a machine-made product is a random variable X with the following probability distribution:- Show that P(x) is a probability distribution.
let x denote the number of heads obtained when a fair coin is tossed 4 times.a what is ex and varx?b repeat 10 times
At 0.01 level of significance, is there evidence that mean price is higher at Whole Foods Market than at Fairyway supermarket? Interpret the meaning of p-value in (i).
it is believed that the median annual starting salary of a freshman engineering graduate is 40000. if we record the
A sample of 20 pages was taken without replacement from the 1,591-page phone directory Ameritech Pages Plus Yellow Pages. On each page
Determine the standard error of students that favoured the move.
q1. hallux abducto valgus call it havis a deformation of the big toe that often requires surgery. doctors used x-rays
Using the five steps of hypothesis testing and the 5% significance level (alpha), does showing the film change students' attitudes towards the chronically mentally ill?
Calculate and interpret two 95% confidence intervals to estimate the true mean Budget value. The first will assume normality and use a z-interval; the second will assume a t-interval.
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