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Group of 30-year-olds is interviewed to determine whether the type of music most listened to by people in their age category is independent of the geographic location of their residence. Use the chi-square test of independence, = .01, and the following contingency table to determine whether music preference is independent of geographic location.
Type of Music Preferred
GeographicRegionRock R & B Country ClassicalNortheast 140 32 5 18South 134 41 52 8West 154 27 8 13
Round the intermediate values to 2 decimal places. Round your answer to 2 decimal places, the tolerance is +/-0.05.
Observed =Type of music preferred is independent or not independent of region of the country?
The U.S. Bureau of Prisons publishes data in Statistics Report on the times served by prisoners released from federal institutions for the first time.
A recent study, "[b]ased on data from a survey of nearly 1,500 Boston men aged 18 to 35 years...found that 16 percent of the men - about one in six -- said they had abused their partner physically or sexually within the past year.
If researcher obtains sample mean of M = 88, which combination of factors is most likely to result in rejecting null hypothesis?
Conduct the appropriate analysis to determine if there was an effect of the music on completing problems. Construct the appropriate graph to show the differences in the scores of the two groups.
Determine the Efficiency of this market research. What would be your suggestions? How much will this company be eager to pay for this market research?
In the last municipal election, a sample of 350 registered voters showed that 85 voted for the incumbants. Find out a 98% confidence interval estimate for the proportion of all voters voting for the incumbants.
A normal population has a mean of 75 and a standard deviation of 5. You select a sample of 40. Compute the probability the sample mean is
Use MegaStat's output for multiple regression to determine the multiple regression equation
A rocket fires two engines simultaneously. One produces a thrust of 800N directly forward while the other gives a thrust of 508N at an angle 38.2^circ above the forward direction.
If two independent large samples are taken from two populations, the sampling distribution of the difference between the two sample means:
Reynolds Electronics accepts a lot from a particular supplier if the defective components in the lot do not exceed 1%. Suppose a random sample of five items from a recent shipment is tested.
This distribution is positively skewed. The standard deviation of the population is not known.
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