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Find the minimum sample size required to estimate the percentage of college students who use loans to pay for college. Assume we want 95% confidence that the sample proprotion is within two percentage points of the true percentage
Statistics and Probability, Statistics
How would I calculate this :The personnel office at a large electronics firm regularly schedules job interviews and maintains records of the interviews. From the past records, they have found that the length of a first i ...
A box contains n white and m black balls. One ball is added randomly, white with probability p and black with probability 1 - p. Then a random ball is taken out from the box. (a) Find the probability that the taken ball ...
Assume that the distribution of the number of chocolate chips in Chips Ahoy regular cookies is approximately normal with a mean of 24.0 chips and a standard deviation of 2.6 chips. N(24.0, 2.6). 1) What is the number of ...
A school newspaper reporter decides to randomly survey 12 students to see if they will attend Tet (Vietnamese New Year) festivities this year. Based on past years, she knows that 24% of students attend Tet festivities. W ...
According to the Polk Company, a survey of households using the Internet in buying or leasing cars reported that 81% were seeking information about prices. In addition, 44% were seeking information about products offered ...
There are 2 white balls and 8 red balls in an urn. Consider selecting one ball at a time from the urn. What is the probability that the first ball is red and the second ball is also red? Express the probability in fracti ...
In an effort to check the quality of their cell? phones, a manufacturing manager decides to take a random sample of 10 cell phones from? yesterday's production? run, which produced cell phones with serial numbers ranging ...
Strip Mining Inc. can develop a new mine at an initial cost of $11 million. The mine will provide a cash flow of $39 million in 1 year. The land then must be reclaimed at a cost of $32 million in the second year. a. Wha ...
A? BBB-rated corporate bond has a yield to maturity of 11.2%. A U.S. treasury security has a yield to maturity of 9.9%. These yields are quoted as APRs with semiannual compounding. Both bonds pay? semi-annual coupons at ...
Jennifer currently has $500 in an account with an annual rate of return of 4.3%. She wants to have $6000 for a trip to Alaska when she graduates in 4 years. How much will she have to save each month to afford her trip?
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