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Question: Personal probability? When there are few data, we often fall back on personal probability. There had been just 24 space shuttle launches, all successful, before the Challenger disaster in January 1986. The shuttle program management thought the chances of such a failure were only 1 in 100,000.
(a) Suppose 1 in 100,000 is a correct estimate of the chance of such a failure. If a shuttle was launched every day, about how many failures would one expect in 300 years?
(b) Give some reasons why such an estimate is likely to be too optimistic.
An infestation of a certain species of caterpillar called the spruce budworm can cause extensive damage to the timberlands of the northern United States. It is known that an outbreak of this type of infestation occurs, on the average, every 30 yea..
If the mean is 24 inches and the SD is 4.5 inches, What is the height of a plant with a z score of 0? My question is what is the formula used to solve this?
In an analysis of variance problem involving 3 treatments and 10 observations per treatment, SSE = 399.6. The MSE for this situation is:
suppose y is the daily revenue for some company where ey 10000 and vary 2 540000 and ?y 734.85.a if y is normally
The impact of a television commercial, measured in terms of excess sales volume over a given period, is believed to be approximately normally distributed with mean 50,000 and variance 9,000,000. Find 0.99 probability bounds on the volume of excess..
Give a direct proof that the sum an even integer and an odd integer is odd. Hint: Start by letting m be an even integer and letting n be an odd integer.
weekly commodity prices for heating oil in cents were obtained for a period of 30 weeks and regresses against time.
The Financial Advisor exam has a mean of 500 and a standard deviation of 20. If the bank chooses to hire either Steve or Mark based solely on their exam performance, who is the bank more likely to hire? Show evidence for your answer.
bags of a certain brand of tortilla chips claim to have a net weight of 16 ounces. net weights actually vary slightly
1. what information does calculating standard deviation provide? how is the z-score related to standard deviation?2.
No pressure was used for the controls, and their bleeding time was found to have a mean of 1.524 minutes and a standard deviation of .614min. Give a 95% confidence interval for the difference in bleeding times. Do you think pressure increases mean..
At the 0.025 significance level, what is the critical value? State the null and alternative hypothesis. Draw a diagram. Provide the computation of the test statistic. State your decision in terms of the null hypothesis.
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