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Focus groups of 10 people are randomly selected to discuss products of the Famous Company. It is determined that the mean number(per group) is 4.80000019 and the standard deviation is 0.73. Would it be unusual to randomly select 10 people and find that greater than 8 recognize the Famous Brand?
A sports researcher gave a standard written test of eating habits to 12 randomly selected professionals, four each from baseball, football, and basketball. The results were as follows:
Suppose that the number of calories in McDonald's Egg McMuffin is normally distributed random variable with mean of 290 calories and standard deviation of 14 calories.
(a) Find the median cost of houses at Coal City in 1988. (b) Find the modal selling price of houses at Coal City in 1988.
The average age of the women was 45.582 with a standard deviation of 5.143. He uses this information to calculate a 95% confidence interval for the differnce in means, (-11.41, -5.422). The best interpretation of this interval is which of the foll..
Give a 99% confidence interval for the mean increase in pay for all corporate CEOs.
Consider the following portion of an electric circuit with three relays. Current will flow from point A to point B if there is at least one closed path when the relays are activated. The relays may malfunction and not close when activated.
Distribution with a mean of 1 flaw per 5 feet of paper (0.2 flaws per foot). What is the probability that in a 1-foot roll there will be at least 2 flaws?
At the 0.05 significance level, can Ms. Bridgend conclude that she is earning an average of more than $20 in tips?
what sample size should be used in the funding decision study? Use σ = $4000 as a planning value. ________________
We will test to determine if there evidence of an improvement on the final examination, at the 1% significance level. What is the alternate hypothesis?
In a random sample of 16 mountain climbers who are going to attempt Mt. McKinley, what is the probability of each of the following?
Suppose that Y has a continuous distribution with pdf f2, let Z=X+Y. Show that Z has a continuous distribution and find its pdf.
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