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Question: Numeric results for several independent-samples t tests are presented here. Decide whether each test is statistically significant, and report each result in the standard APA format.
a. A total of 73 people were studied, 40 in one group and 33 in the other group. The test statistic was calculated as 2.13 for a two-tailed test with a p level of 0.05.
b. One group of 23 people was compared to another group of 18 people. The t statistic obtained for their data was 1.77. Assume you were performing a two tailed test with a p level of 0.05.
c. One group of 9 mice was compared to another group of 6 mice, using a two-tailed test at a p level of 0.01. The test statistic was calculated as 3.02.
Assingment 2 independent subsystems in parallel configuration. Each subsystem has different failure rates, any Exponential reliability functions
At the .025 significance level, can we conclude that less than 88 percent of the orders are delivered in less than 10 minutes?
a blackjack consists of two cards one of which is an ace and the other of which is a 10-point card either a 10 jack
What is the probability that all three of them consider engineering quality to be among the most important features of the car? What is the probability that at least one of them considers this quality to be among the most important ones? How do yo..
Late arrivals. Will your flight get you to your destination on time? The U.S. Bureau of Transportation Statistics reported the percentage of flights.
A statistics profressor plans classes so carefully that the lengths of her classes are uniformly distributed between 50.0 and 60.0 minutes. Find the probability that a given class period runs great than 50.5 minutes.
A broker deals in stocks, bonds and commodities. in reviewing his clients he finds that 29 own stocks, 27 own bonds, 19 own commodities
If. for practical reasons. you had to choose only one model to use to set the expiration dates, which would it be? (There is no health risk involved. It's a flavor quality thing.) Why would you choose this model?
Using your selected best-fit model, forecast and plot your estimated female labor force participation rate for the years 1992-2002
An airline has surveyed a simple random sample of air travelers to find out whether they would be interested in paying a higher fare in order to have access to e-mail during their flight.
Assume 41% of all American adults have some college education. American adult is randomly selected. Determine the probability that adult owns stock or has some college education?
GRADE DISTRIBUTIONS The grade distribution for a certain class is shown in the following table.
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