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Which of the following is true regarding ANOVA?
a) It is used to test for a difference in medians among three or more populations
b) It is used to test for a difference in means among two populations
c) The acronym stands for analysis of variance
d) Both (a) and (c)
Determine a random number generator and make simulated data for not more than 25 participants (test subjects) in study using ranges of values for variables you established above.
How should he go about taking samples to gather data for testing the hypotheses?
Mark makes it a policy not to buy bananas unless the price is 33 cents or less per pound. What proportion of the time would he buy bananas?
For a random sample of 50 batteries, what is the probability that the sample mean will be less than 27.5 hours?
For a given level of significance, if the sample size is increased: the power of the test will increase we will have more responses to log and calculate it will skew the mean to the right it has no effect on the direct results.
A random sample of 36 drinks from a soft drink machine has an average content 7.6 ounces with an standard deviation of 0.48 ounces. Test the hypothesis ounces against the alternative hypothesis at the 0.05 level of significance.
To report their finding they want to create a 90% confidence interval. What would be the margin error for this confidence interval?
Use the marginal probabilities of school quality, school cost or convenience, and other to comment on the most important reason for choosing a school.
What is the expected duration of the game? Given the same CIC, how much more money should Alice have ititially so as to maximize the expected duration of the game?
Explain why random samples are preferred to nonrandom samples.
If x is a binomial random variable where n = 100 and p = .1, find the possibility that x is less than or equal to 10 using the normal approximation to the binomial.
Suppose a social worker is involved in a study about family structure. She obtains information regarding the number of children per family in a certain community from the census data. What is the random variable of interest? Is the random variable..
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