Suppose that the lengths of human pregnancies are normally distributed with a mean of 268 days and a standard deviation of 14 days. Complete the following statements. (a) Approximately ? 282 days. v of pregnancies have lengths between 254 days and (b) Approximately 95% of pregnancies have lengths between I days and days .

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 261 days…

A: Here, µ=261 and σ = 17.

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A: Hello there! I see there are more than 3 sub parts in the question. According to our policies can…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 267 days…

A: Solution: Let X be the length of pregnancies in a small rural village From the given information, X…

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A: The normal distribution related problems can be solved by using the standard normal z score method…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 262 days…

A: Given information- Population mean, µ = 262 days Standard deviation, σ = 17 days Significance level,…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 268 days…

A: Givenmean(μ)=268standard deviation(σ)=13

Q: Suppose that the lengths of human pregnancies are normally distributed with a mean of 266 days and a…

A: a) Empirical rule: The probability of the observation lies within 1 standard deviation of the mean,…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 264 days…

A: Let X denote the length of pregnancies in a small rural village. According to the given information.…

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A:

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A: a. Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 268 days…

A:

Q: A statistics professor announces that 15% of the grades he gives are As. The results of the final…

A: It is given that the mean and standard deviation are 83 and 6, respectively.

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A: Given that Mean = 79,s.d=6 (b) P(X>97 )=? (c) P(X<73) =? (d)P(61<x<85) =?

Q: A grocery supplier believes that in a dozen eggs, the mean number of broken eggs is 0.5 with a…

A: Given : For a dozen of eggs :  E(X) = 0.5 SD(X) = 0.4

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A:

Q: b) The American Automobile Association reports that the average time it takes to respond to an…

A: Given  μ=38, σ=9.002 and n=80

Q: Suppose that the lengths of human pregnancies are normally distributed with a mean of 266 days and a…

A: GivenMean(μ)=266standard deviation(σ)=17

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A: From the given information, the mean is 15.90 and standard deviation 1.50.

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A: Given: mean = 84.

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Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 260 days…

A:

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 260 days…

A: Given Information Mean µ = 260 Standard deviation(σ) = 14

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 260 days…

A: Assume random variable X denotes the lengths of pregnancies in a small rural village. It is given…

Q: Suppose that the flying hours for aircraft operated by regional airlines in the U.S. during 2006 are…

A: Given Information Mean µ = 2500 Standard deviation(σ) = 400 P (Z > z) = 0.975 P(Z<z) = 1 –…

Q: Suppose that the lengths of human pregnancies are normally distributed with a mean of 268 days and a…

A:

Q: 2. The height of an adult male is known to be normally distributed with of mean of 69 inches and a…

A: X~N( μ , ?^2 )    μ =69     , ? = 2.5   Z-score =( x - μ )/?

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Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 263 days…

A: Solution-: Given: μ=263 days, σ=13 days We want to find what range would you expect to find the…

Q: 2. If the heights of a male youngsters are normally distributed with a mean of 60 inches and a…

A:

Q: In a class of twenty-five 15-year old girls the average height is M = 62.60 inches. The national…

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Q: If the average low temperature of a winter month in Rochester, NY is 18∘18∘ and the standard…

A: According to the Chebyshev's theorem, 1-(1/k²) of the observation fall within k standard deviation…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 269 days…

A: Given- μ=269σ=15X~N(269,15)n=56

Q: According to a Human Resources report, a worker in the industrial countries spends on average 419…

A: Solution

Q: Assume that males have a mean hieght of 69.1 in. with a standard deviation of 2.9 in., and females…

A: Given  that  males have a mean height of 69.1 in. with a standard deviation of 2.9 in. and  female…

Q: Suppose that the lengths of pregnancies are normally distributed with a mean of 270 days and a…

A:

Q: Assume that the test scores from a college admissions test are normally distributed, with amean of…

A: Hence,the percentage of the people taking the test score between 400 and 500 is…

Q: Suppose that the lengths of human pregnancies are normally distributed with a mean of 267 days and a…

A:

Q: (c) If the storeroom has 30 reams at the start of the day, how many should the manager expect to…

A: Given: X 0 1 2 3 4 5 P(X=x) 0.05 0.15 0.25 0.4 0.05 0.1

Q: Assume that the heights of adult puffins are normally distributed, with a mean of μ=μ= 15.9 inches…

A: Given data, μ= 15.9  σ= 2.7  n=28 mean of the distribution of x¯  =?

Q: A statistics professor announces that 15% of the grades he gives are As.  The results of the final…

A: Solution:From the given information, mean score is 83, standard deviation is 6. The fifteen…

Q: Suppose that the scores on a statewide standardized test are normally distributed with a mean of 68…

A: As per our guideline we are supposed to answer only  3 sub-parts of any question