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A random sample of 78 students in region A is taken and it is found that 47 of these students watch more than 30 hours of TV per week. A random sample of 64 students in region B is taken and it is found that 29 of these students watch more than 30 hours of TV per week. Let : p1 = proportion of junior high students in region A watching more than 30 hours of TV per week, and P2 = proportion of junior high students in region B watching more than 30 hours of TV per week, and Is there enough evidence at alpha = 0.01 to conclude that p1 watch more than 30 hours of TV per week than p2?
Calculate the interquartile range and construct the less then give
Use the following information on states of the economy and stock returns to calculate the expected return for Dingaling Telephone.
How many ways are there to select a committee
suppose that the length of life in hours say x of the light bulb manufactured by company a is n80014400 and the length
Assume rf is 5% and rm is 10%. According to the SML and CAPM, an asset with a beta of -2.0 has a required return of negative 5%[=5-2(10-5)]. Can this be possoble?
the table below shows lifetime peptic ulcer rates per 100 population u for various family incomes x as reported by the
aj davis is a department store chain which has many credit customers and wants to find out more information about these
construct a confidence interval of the population proportion at the given level of confidence. x105 n150 95
Find the confidence interval for the difference of the two means - Is there a significant difference in teacher's salaries between two states
Find the probability that a man and woman are watching the schow at the same time. (This question confused me because it sounds like the statement I just wrote before this one)
This question relates to Basic Statistics and it discuss about what is not a measure of dispersion
The US Mint selects ten pennies from the production line to test the hypothesis that the mean weight of each penny is 5 grams. The normally-distributed weights (in grams) of these pennies are as follows:
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