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A sample of 100 randomly selected students found that the proportion of students planning to travel home for Thanksgiving is 0.68. What is the Standard Deviation of the sampling distribution?
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If a fair coin is tossed five times, what is the probability of tossing exactly three heads?
What is the appropriate statistical analysis to use: t-test for two independent samples, t-test for dependent samples, ANOVA, or chi-square test of independence? Please identify and explain why it is appropriate. (a) A s ...
According to a Field Poll, 79% of California adults (actual results are 400 out of 506 surveyed) feel that "education and our schools" is one of the top issues facing California. We wish to construct a 90% confidence int ...
Mary's parents decided to buy a new house for their retirement. They are looking at $200,000 lake house. Since their credit history is excellent, they can get approved for 3.6% annual interest on 30-year mortgage. In the ...
A factory makes parts for laptop computers, including screws. The screws are required to have the right length. The lengths of the screws obey a normal distribution with mean μ=4.25 millimeters and standard deviation σ=0 ...
You work as a purchasing manger at walter Pharmaceuticals. Yor currnet suppliers of raw materials has an average delivery time of 14 days. Another vendor approaches you and says that they can match your current vendors's ...
1. A stock market analyst is able to identify mis-priced stocks by comparing the average price for the last 10 days to the average price for the last 60 days. If this is true, what do you know about the market's efficien ...
In? mid-2009, Rite Aid had? CCC-rated, 20-year bonds outstanding with a yield to maturity of 17.3%. At the? time, similar maturity Treasuries had a yield of 5%. Suppose the market risk premium is 4% and you believe Rite? ...
The probability that someone made a purchase at a store is 0.36. You randomly select 15 people who went to the store. The random variable x represents the number of people who made a purchase. a. Find the probability tha ...
15-18 years 4 19-22 years 5 23-26 years 6 27-30 years 9 31-34 years 2 35-38 years 7 Based on the frequency distribution above, find the relative frequency for the class 15-18 . Relative Frequency = % Give your answer ...
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Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate
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