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A random sample of 16 communities in Western Kansas gave the following information for the rate of hay fever per 1000 population for people under 25 years of age.
Rate of hay fever per 1,000 population for people under 25
A random sample of 14 regions in western Kansas gave the following information for people over 50 years old.
Assume that the hay fever rate in each age group has an approximately normal distribution. Does the data indicate that the age group over 50 has a lower rate of hay fever? alpha is 0.05. Show formulas, H0 and H1 too.
Assuming that the heights of college women are normally distributed, with a mean of 69 inches and standard deviation of 4.8 in, what is the percentage of women that are between 69 in. and 73.8 in.?
question which is relatively better a score of 85 on a psychology test or a score of 45 on an economics test? scores on
Amount of housework done by men and women in dual-earner marriages. The study showed that 67.5% of the men felt that the division of housework was fair?
An advisory group decided to investigate this claim, believing it was too large. A sample of 200 traffic accidents this year showed 74 persons were also involved in another accident within the last five years. Use the 0.01 significance level. Show..
Find the value of q-hat from proportion and degrees of freedom used to find the t-score.
a state lottery has1100 prizes of 1145 prizes of 1025 prizes of 655 prizes of 2902 prizes of 1290amp 1 prize of
Define or give an example of a hypothetical construct. Explain why operational definitions are needed to define and to measure constructs.
an airline sells 250 tickets for a certain flight that only has 245 seats. on averageabout 2 of ticket purchasers do
1. a fruit grower sprays 200 trees with a new spray and 200 other trees with a standard spray to protect against insect
an investigator conducts a study to investigate whether there is a difference in mean pef in children with chronic
Describe the "third variable problem" as it relates to correlation and provide an example of how you might see this played out in your own field.
which of the following is not a decision variable when formulating the project crashing problem as a linear program?the
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