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Two mating parts have critical dimensions x1 and x2 as shown below. Assume that x1 and x2 are normally distributed with means 1 and mean2 and standard deviations s1 = 0.400 and s2 = 0.17. If it is desired that the probability of a smaller clearance (i.e., x1 - x2) than 0.09 should be 0.006, what distance between the nominal dimensions of the two parts (i.e., u1 and u2) should be specified by the designer?
Generating at least $1500 in revenue and honoring all reservations. Formulate the LP model to determine how many Raft trips and how many Sailing lessons should be scheduled.
Find the probability that a randomly selected man will be shorter than 78.1 inches. Don't forget the diagrams for (b) and (c).
Generate the statistical null and alternative hypotheses. Describe what information the effect size would tell you that the probability value would not tell you.
A researcher is interested in the effect of an electrolytic sports drink on the endurance of adolescent boys. A group of 30 boys is selected and half are given a treadmill endurance test while consuming the sports drink and the other half take the..
Using your own experience, estimate the probability the local weather forecast is correct. Explain the rationale behind your estimate.
Pollsters attempt to find out whether or not person is a "likely voter" before they count their opinion in poll. If we suppose 40% of registered voters will really vote.
More than 5 percentage points in either direction from what would have been got by interviewing all voters in United States." Determine sample size suggested by this statement.
A multiple choice test has three questions with 5 possible answers (and oly one right answer each). You decide to randomly guess the right answer.
Test the hypothesis that = 800 hours against the alternative 800 hours if a random sample of 30 bulbs has an average life of 788 hours. Use a 0.04 level of significance.
An electronic test equipment manufacturing company markets a certain piece of specialty equipment. The company has several competitors who currently market similar pieces of equipment.
Sample standard deviation s2 = 7.6 thousand dollars. Does this indicate that in St. Louis, computer stores tend to have higher mean profits per employee? Use α = 0.01 and interpret your answer.
You play a game with two possible outcomes. Outcome A has probability 0.4 and outcome B has probability 0.6. When B occurs you win $2.00; otherwise, you lose $1.00. What is your expected value for this game?
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