1. (a) A factory produces steel pipes which are required to pass quality checks, the probability of being rejected is 0.15. Consider a batch of 10 pipes, what is the probability of 3 pipes being rejected? Find the mean and standard deviation of the rejected pipes.

Q: percentage of," 2013). Consider a group of 200 people. Find the mean and the standard deviation of…

A: Let a random experiment be performed repeatedly. Let the occurrence of an event in a trial is called…

Q: The distribution of the test scores of students has an unknown mean and a standard deviation equal…

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Q: A 4 year college will accept any student ranked in the top 60% of a national exam. If the test…

A: From the given information,Mean (µ) =600Standard deviation (σ) = 100Let the test score be a x which…

Q: The test scores in a class are normally distributed with a mean score of 77. if the standard…

A: The distribution of test score are normally distributed with mean of 77. Now consider the standard…

Q: For each day of last year, the number of vehicles passing through a certain intersection was…

A: Given, μ=375σ=25 Let X be the no. of vehicles passing through a certain intersection per day. Since…

Q: A banks loan officer rates application for credit. The ratings are normally distributed with a mean…

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Q: Entry to a certain university is determined by a national test. The scores on this test are normally…

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Q: The results of a common standardized test used in psychology research is designed so that the…

A: Given Data: x¯=160σ=30   x=127

Q: Suppose that the scores on a statewide standardized test are normally distributed with a mean of 71…

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Q: ou are a teacher at a gifted school, and you feel that the newest class of students is even brighter…

A: From the provided information, Population mean (µ) = 127 Sample size (n) = 32 Sample mean (x̅) = 134…

Q: A simple random sample of 36 observations was taken from a large population. The sample mean and the…

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Q: Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

A: let X be the distance of fly balls hit to the outfield X~N(mu=260,sigma^2=50^2) n=49 we want to find…

Q: Suppose that the weights per bag of cement produced by a company follow a  normal distribution. The…

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Q: The weights of the Grade 11 students are normally distributed with mean of 48 kgs and standard…

A: The weights of the Grade 11 students are normally distributed with mean of 48 kg and standard…

Q: 11. If the scores for an 1Q Test have a mean of 100 and a standard deviation of 15, find the…

A: We have to find given probability.

Q: om works for a  fruit company and found that the weight of pineapples are normally distributed with…

A: P(X>475)=?

Q: A random variable that is normally distributed where mean = 60, standard deviation = 2 and x=55.…

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