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The Harris/Excite instant poll used to be online. Question displays on screen, and you just click buttons to vote "Yes," "No," or "Don't Know." On January 25, 2000, question was "Must female athletes be paid same as men for work they do?" In all, 13,147 (44%) said "Yes," another 15,182 (50%) said "No," and remaining 1448 said "Don't know."
a. Determine the sample size for this poll?
b. That's a much larger sample than standard sample surveys. In spite, we cannot trust result to give good information about any clearly defined population. Explain why?
c. It is still true that more men than women use Web. How might this fact influence the poll results?
Pollsters try to determine whether or not a person is a "likely voter" before they count their opinion in a poll. If we assume 40% of the registered voters will actually vote, in a random sample of 100 registered voters we can be 95% confident tha..
Consider the relationship between derived scores and the normal curve. In terms of the normal curve and how it relates to psychological testing and assessment.
A random sample of n = 4 scores is obtained from a normal population with = 20 and = 4. What is the probability of obtaining a mean greater than M = 22 for this sample?
Test hypothesis that annual incomes of corporate trainers in areas of more than 500,000 are considerably more than those in areas of less than 100,000. Make use of the 5% level of risk.
What is the smallest number of consumers that Timex can survey to guarantee a margin of error of .05 or less at a 99% confidence level and calculate the intervals correctly
To find out the estimate of between and within treatments.Samples were selected from 3 populations. The data obtained follow.
A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO is less than 1 in every one thousand. State the null hypothesis and the alternative hypothesis for a test of significance.
Based on this information, confidence level would be 90% that population mean is somewhere between?
Two hundred raffle tickets are sold. Your friend has 5 people in her family who each bought two raffle tickets. What is the probability that someone from her family will win the raffle?
Given the following data, 1) how do you make Excel create a scatter diagram for you? 2) If you were to draw a line through the points, how straight would the line be?
Find the strategy that maximizes the manufacturer's expected net earnings and Should the manufacturer routinely obtain credit rating reports on those retailers who seek credit approval? Why or why not?
Xerox Claims their copier is the same speed as Cannon's copier. The average speed of cannon's copier is 27 copies per minute. A test of 49 runs is done on the Xerox copier giving a sample mean X = 26 and a sample standard deviation s = 2.65.
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