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Average weight of checked baggage in domestic US flights is 25 kg with variance of 900 kg. A plane carries 100 passengers. It can handle 3000 kg of checked baggage, that is, a maximum of 30 kg per passenger. What is the probability that a random load of 100 passengers will check too much baggage for the plane to handle?
a researcher wants to determine if there is a significant difference in the standard deviations of the number of weekly
Conduct a test at the .05 level of significance to determine if there is any difference in the mean selling price of new homes in Omaha versus Kansas City.
find the indicated z score. the graph depict the standard normal distrubiton of blood count scores with mean of 0 and
1. How does multicollinearity manifest itself in a regression situation? 2. Explain what is meant by perfect collinearity. What happens when perfect collinearity is present?
determine if this statistical study is descriptive or inferentiala study finds that the median household income in the
can you conclude that there is a significant linear correlation between vehicle weight and variability in braking disance on a dry surface?
At 95% level of confidence, can we conclude that the babies using the Gibbs product gained less weight?
Determine the probability that mean annual snowfall during 40 randomly picked years will exceed 111.8 inches?
assume that iq scores are normally distributed with a mean of 100 and a standard deviation of 15. if a sample of 70
Computing the mean, standard deviation values for the given data - Describe how statistics is being misused in this situation
When using a t test for dependent means, show the steps involved in calculating the estimated population variance based on scores in this sample:
Testing for Population mean - Can the difference in average educational level between the sample and the nation be explained by chance variation?
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