Winning on any one play
An instant lottery game gives you probability 0.017 of winning on any one play. Plays are independent of each other.
If you play 3 times, the probability that you win on one or more of your plays is about (±0.0001) ____ ?
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A construction company figures the cost of a project based on an average idle time of 68 minutes (per worker per 8 hour period). The std. dev is 10 minutes. A new work schedule has just been completed by the foreman.
If the above confidence interval is used to test the given hypotheses, what would the statistical decision be ? What would the level of significance of the hypothesis test be?
What is the probability that there will be a severe weather warning tomorrow? If you wake up tomorrow morning and see that it is snowing, what is the probability that there is a severe weather warning?
An inspector is looking for nonconforming wells in the gasolinepipeline between Phoenix and Tucson. The probability that oneparticular weld will be defective is 0.01. The inspector isdetermined to keep working until finding three defective welds.
Based on the following information compute: Population mean Show your work
The Indiana State Police wish to estimate the average mph being traveled on the Interstate Highways, which cross the state. If the estimate is to be within ±5 mph of the true mean with 95% confidence and the estimated standard deviation is
You just recently read somewhere that the mean elevation drop for ski trails at eastern ski centers is at least 450 feet. You believe that the elevation is lower than 450 feet. Write the null and alternative hypotheses that would be used to test t
Do one of the following as appropriate: A) find critical value za/2 B) find critical value ta/2 C) state that neither are normal nor t distribution applies.
In 1894,druggist Asa Candler began distributing handwritten tickets to his customers for free glasses of Coca-Cola at his soda fountain. By 1975 it was estimated that 65% of U.S. Consumers regularly used discount coupons when shopping.
Using the data collected from the Student Data Survey at the beginning of the course, construct a probability distribution of the levels of confidence regarding the course (1-4). Examples of probability distribution tables are found in 5.2. Find
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