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Suppose that 30% of a group of people have hazel eyes. Assume that passengers boarding the plane form a randomly chosen group. What is the probability that passenger 17 is the 3th one having hazel eyes.
The p-value for a test statistic is .085, what is the minimum level of significance required to reject the null hypothesis?
Suppose that among workers exposed to asbestos in a shipyard in 1980, 33 died over a 10 year period from COPD, whereas only 24 such deaths would be expected based on statewide mortality rates. Is the number of deaths from COPD in this group excess..
the supreme court has said that z-scores beyond z 2 or 3 are generally convincing statistical evidence. for a
36 values given here are based on summary statistics from research by cumming. Do you think that these data are normally distributed?
the most common therapy for warts is cryotherapy in which liquid nitrogen is applied to the area of the wart every few
A meteorologist wishes to estimate the mean amount of snowfall per year in Spokane, Washington. A random sample of the recorded snowfalls for 20 years from a 140 year period produces a sample mean equal to 54.03 inches, with a standard deviation of 9..
according to a government study among adults in the 25- to 34-year age group the mean amount spent per year on reading
To test the hypothesis that students who finish an exam first get better grades, Professor Hardtack kept track of the order in which papers were handed in.
Show that if in the Law of Large Numbers we omit the assumption that all the X have the same mean and replace the m in the conclusion by [E(X1)+...+E(Xn)]/n, the law remains valid.
a health researcher read that 200 lb man can burn 546 calorieshour playing tennis. 36 man sample withe a mean of 544.8
If the gender-selection method has no effect and boys and girls are equally likely, find the mean number of boys born in groups of 152. Round to the nearest whole number.
With standard deviation of 15. Test hypothesis that Mrs. Smith and Mrs. Jones are equally effective teachers. Use 0.10 level of significance.
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