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Out of 2430 MLB games played in 2009 the home team won the game in 54.9% of the games. Test to see if there is evidence at the 1% level, that the home team wins more that half the games. show all details of the test, including Null and Alternative hypothesis, test statistic and conclusion of your test.
a specific automotive part that a service station stocks in its inventory has an 8 chance of being defective. suppose
Job Interviews: Based on information from MRINetwork, some job applicants are required to have several interviews before a decision is made. The number of required interviews and the corresponding probabilities are: 1 (0.09); 2 (0-31); (0.37); 4 (..
a manuscript is sent to a typing firm consisting of typists a b and c. if it is typed by a then the number of errors
1. laboratory experiment shows that the life of the average butterfly is normally distributed with a mean of 18.8 days
Given that the price-to-earnings ratios are uniformly distributed, answer the following questions. What percent of price-to-earnings ratios are between 1.90 and 2.48?
Describe expected value (EV) of an investment if there is a 20% chance of realizing a return of $20,000 or a 55% chance of realizing a return of $25,000, or there could be a loss of $15,000?
A retailer wants to estimate with 99% confidence the number of people who buy at his store. A previous study showed that 15% of those interviewed had shopped at his store.
Give critical test statistic and compute sample test statistic. Test null hypothesis at alpha level .01.
suppose your instructor randomly surveyed his or her performance i.e. students graded the teacher this semester. the
What assumption tests should be used? A fifth grade science teacher want to know if there is a relationship between final exam scores and overall course points after adjusting for a quiz score.
Vince Showers, Managing Director for Sleaz Entertainment, claims that the average age of their customers is at least 23. If this is not the case, Showers will face charges of violating local ordinances regarding public decency.
You read that statistical test at α=0.01 level has probability 0.14 of making a Type II error when specific alternative is true. Calculate the power of test against this alternative?
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