The marks obtained by a group of students in a certain subject are assumed to be approximately normally distributed with mean value 65 and standard deviation 5. f 3 students are selected at random from the group, what is the probability that exactly 2 of them will have marks aver 70.

Q: Assume that adults have IQ scores that are normally distributed with a mean of 105 and a standard…

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A: From the provided information, Mean (µ) = 505 Standard deviation (σ) = 180 Let X be a random…

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Q: Assume that adults have IQ scores that are normally distributed with a mean of h=100 and standard…

A: Let "X" be the IQ score of the adults.

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A: We have given that Suppose the scores, on a college entrance examination are normally distributed…

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Q: Suppose that the distribution for total amounts spent by students vacationing for a week in Florida…

A: Answer:- Given     X ~ N(μ, σ )                      Where mean μ   = 650        &    standard…

Q: uppose the weights of apples in a particular orchard follow a normal distribution with a mean of 150…

A: given datanormal distributionμ = 150 gramsσ = 20 gramsn = 25

Q: The scores on a certain test are normally distributed with a mean score of 65 and a standard…

A: The random variable score follows normal distribution. The population mean is 65. The population…

Q: SAT scores (out of 1600) are distributed normally with a mean of 1100 and a standard deviation of…

A: Given info: Mean score is 1100 and the standard deviation is 200.

Q: Yoonie is a personnel manager in a large corporation. Each month she must review 16 of the…

A: Solution Give  Χ be the random variable representing the time it takes her to complete one review…

Q: Yoonie is a personnel manager in a large corporation. Each month she must review 16 of the…

A: Solution

Q: Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard…

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Q: Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard…

A: As given the IQ scores of adults are normally distributed with a mean ( µ ) = 100 and standard…

Q: Question 17 options:   1)  3.52 to 8.47   2)  4.69 to 7.31   3)  4.66 to 7.34   4)  4.33 to…

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Q: Suppose the scores, x, on a college entrance examination are normally distributed with a mean of…

A: Solution: Let X be the score on a college entrance examination. From the given information, X…

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A: Mean = 180 Standard deviation = 28 Sample size, n = 40

Q: Suppose the scores, X, on a college entrance examination are normally distributed with a mean of…

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Q: Assume that adults have IQ scores that are normally distributed with a mean of 98 and standard…

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Q: The percent of fat calories that a person in a city consumes daily is normally distributed with a…

A: Normal Distribution: A continuous random variable X is said to follow Normal distribution with…

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A: Given.mean(μ)=635standard deviation(σ)=27

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