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Find the standard deviation of the distribution in the following situations. (a) MENSA is an organization whose members have IQs in the top 2% of the population. IQs are normally distributed with mean 100, and the minimum IQ score required for admission to MENSA is 132. (b) Cholesterol levels for women aged 20 to 34 follow an approximately normal distribution with mean 185 milligrams per deciliter (mg/dl). Women with cholesterol levels above 220 mg/dl are considered to have high cholesterol and about 18.5% of women fall into this categor
in an effort to improve the vocabulary of 10 students a teacher provides a weekly 1-hour tutoring session for them. a
According to an exit poll taken by CNN during the 2008 Democratic Primary in Connecticut, 552 registered voters voted for Hilary Clinton and 598 for Barack Obama. Would you have been willing to predict Obama as the winner?
how do you know when to use the minimization and maximization lp
What is the most probable number of patients arriving each Saturday and give the main assumptions we make when we model the above situation using a Poisson distribution.
If you were to conduct right-tailed hypothesis test at 5% significance level, you choose the critical value this way. Assuming that the null hypothesis is true
listed below are the durations in hours of a simple random sample of all flights of a space shuttle program. find
Pretend that you are a Finance person in a large dynamic company. Your dream is to become CFO someday, so you want to make good financial decisions.
Use a 0.01 significance level to test the claim that flights scheduled one day in advance cost more than flights scheduled 30 days in advance.
why does analysis of variance should be conducted only when population variances can be assumed to be equal? why not
suppose the sample size from the normal population is 11. also assume that the population standard deviation is
For an independent-measures ANOVA comparing three treatments with a sample of n = 5 in each treatment, what is the critical value for the F-ratio using a = .05?
what is the mean number of rolls of a die before a 1 is observed?1- obtain a point estimate of the mean number of rolls
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