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A coin is known to be either fair corresponding I the null hypotheses: H0: p=1/2 or has heads on both sides corresponding to the alternative'H1: p=1. We toss a coin 4 times and reject H0 if all 4 tosses land on heads.
A) Find the alpha and beta errors of such a procedure.
B) what is the "power" of such a procedure?
the owner of a grocery store finds that she sell 980 gallons of milk each week at 2.69 per gallon and 1220 gallons of
Construct a probability for the number of students in the sample who watch soap operas.
The weight of cans of fruit is normally distributed with a mean of 1,000 grams and a standard deviation of 50 grams. What percent of the cans weigh 860 grams or less?
1) What is correlation? 2) What is an example of two variables that are likely to be correlated because they are both changing over time?
multiple choice questions based on multiple regression.1. a regression model between sales y in 1000 unit price x1 in
two models of color tv sets designated alpha and beta are produced by allison company. the profit on alpha is 300 and
If a single test is run and indicates that oil is present, what is the revised probability that oil is actually present?
A sample of 40 random weeks finds a weekly loss mean of $3200 with a standard deviation of $750. Test their claim at the a=0.05 level.
a song writer wishes to compose a melody. each note in the melody must be one of the 14 notes in her vocal range. how
Different populations yield the following data. 1 = 236, 2 = 905, = 88 = 13 The sample size is 381 for both samples. Find the 85% confidence interval?
Which measure of family wealth is most important, when making political decisions, the national mean, median or mode?
in bernoulli trials p let vn be the number of trials required to produce either n successes or n failures whichever
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