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Question: Manufacturing and Product Development According to U.S. Inspect, roofing shingles weighed approximately 240 pounds per square foot prior to 1973, and modern shingles weigh approximately 190 pounds per square foot, depending on the material and the manufacturer. Suppose a brand of recycled synthetic shingles is advertised to weigh 185 pounds per square foot. A random sample of these shingles was obtained, and the weight of each is given in the following table.
Assume σ = 2.7. Is there any evidence to suggest that the true mean weight of these recycled shingles is different from 185 pounds per square foot? Use a = 0.05 and compute the p value to draw a conclusion.
Standardization Suppose X is a discrete random variable with mean µX and variance s2X. Find the mean, variance, and standard deviation of Y
A corporate board of directors consisting of 15 persons is to form a subcommittee of 5 persons to examine an environmental issue currently facing the firm. How many different subcommittees are possible?
consider these ratio scores from an experimentnbspnbspcondition 1nbspnbspnbspnbspcondition 2nbspnbspnbspnbspcondition
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a simple random sample of 49 8th graders at a large suburban middle school indicated that 82 of them are involved with
a what is the probability that the space vehicle will have a successful launch?b given that the space vehicle had a
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