BUAL 2650 Final Exam Correctly Answered Latest Update

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BUAL 2650 Final Exam | Q&A Latest 2025/2026 | 100% PASS Suppose that a random variable x has a uniform distribution with c = 2 and d =8. Find P(3 <= x <= 5) - Answer -.333 Find the area under the normal curve when P(Z > -2) - Answer -.9772 Find the area under the normal curve between P(1 < z <2) - Answer .1359 In a manufacturing process, we are interested in measuring the average length of a certain type of bolt. Past data indicate that the standard deviation is .25 inches. How many manufactured bolts should be sampled in order to make us 95 percent confident that the sample mean bolt length is within .02 inches of the true mean bolt length? Answer -601 Rejecting a true null hypothesis is called a ________ error. - Answer Type 1 A recent study conducted by the state government attempts to determine whether the voting public supports a further increase in cigarette taxes. The opinion poll recently sampled 1,500 voting-age citizens. 1,020 of the sampled citizens were in favor of an increase in cigarette taxes. The state government would like to decide if there is enough evidence to establish whether the proportion of citizens supporting an increase in cigarette taxes is significantly greater than .66. Identify the null hypothesis. - Answer -p ≤ .66