A population of values has a normal distribution with u = 86.2 and o = 80.6. You intend to draw a random sample of size n = 131. Find the probability that a single randomly selected value is between 74.2 and 94.7. P(74.2 < X < 94.7) =| Find the probability that a sample of size n = 131 is randomly selected with a mean between 74.2 and 94.7. P(74.2 < M < 94.7) =

Q: The percent of fat calories that a person in America consumes each day is normally distributed with…

A: Given that  Mean=μ=36 Standard deviation=?=10 X~N( μ = 36 , ? = 10 ) Z-score =( x - μ )/?

Q: 5. A sample of n 36 from a population of u = 50 and o = 18 has a mean M = 47 the z-score for the…

A:

Q: About 77​% of all female heart transplant patients will survive for at least 3 years. Eighty female…

A: The probability that the sample proportion surviving for at least 3 years will be less than 72​% is,

Q: The mean height of an adult giraffe is 18 feet. Suppose that the distribution is normally…

A: Given,

Q: The height of women ages​ 20-29 is normally​ distributed, with a mean of 63.6 inches. Assume σ=2.5…

A: Given Information: The height of women ages​ 20-29 is normally​ distributed, with a mean of μ=63.6…

Q: The life of an animal is normally distributed with a mean of 9 years and a standard deviation of1.5…

A: HERE FROM GIVEN INFORMATION , mean =  9 standard deviation  = 1.5 here use excel command for…

Q: The number of ants per acre in the forest is normally distributed with mean 45,000 and standard…

A: Solution: Let X be the number of ants in a randomly selected acre of the forest. From the given…

Q: a. What is the distribution of X? X - N( b. Find the probability that a randomly selected person…

A: Given that the mean days to pass kidney stone is 12 days and the standard deviation is 5 days

Q: Suppose X is a normally distributed random variable with a mean of -39.7 and a standard deviation of…

A: Here we need to find the required probability.

Q: The average number of chocolate chips in one ounce is 56 with a standard deviation of 2.1. Find the…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: Let X represent the full height of certain species of tree. Assume that X is normally distributed…

A: Given data,μ=35.2σ=28.7P(X&gt;58.2)=?

Q: about 34 and a standard deviation of 11. Suppose that one individual is randomly chosen. Let…

A:

Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

A: Given Data: Let X represent the random variable Mean=153 Standard deviation=1.8   X~ Normal (153,…

Q: The mean height of an adult giraffe is 17 feet. Suppose that the distribution is normally…

A: Solution-: Given: μ=17,σ=0.8 Let, X= be the height of a randomly selected adult giraffe ∴X→…

Q: The mean height of an adult giraffe is 17 feet. Suppose that the distribution is normally…

A: Mean, μ=17 Standard deviation, σ=1 Let X be the height of a randomly selected adult giraffe. X ~…

Q: A student takes a 35-question multiple-choice exam, but did not study and randomly guesses each…

A: Given: A student takes 35 question multiple choice exam, but did not study  nd randomly guesses each…

Q: For a measure of  body weight, converted to z or standard scores, what is the probability of having…

A: Solution For standard normal distribution, Mean=0  &amp; standard deviation = 1. Find:

Q: The mean amount of time it takes a kidney stone to pass is 16 days and the standard deviation is 6…

A: Given that the mean amount of time it takes a kidney stone to pass is 16 days and the standard…

Q: Working in the garden pulling weeds/planting flowers burns an average of 200 calories per hour. If…

A: given that:- Mean, μ = 200 Standard deviation, σ = 9

Q: The mean amount of time it takes a kidney stone to pass is 13 days and the standard deviation is 5…

A:

Q: On average, a banana will last 7 days from the time it is purchased in the store to the time it is…

A: The random variable time that it takes for bananas to spoil if they are hung from the ceiling…

Q: company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

A: Given that.   X~N( μ , ?)   μ=193.5     , ?=2.3   , n=15   Z-score =( x - μ )/?

Q: The percent of fat calories that a person in America consumes each day is normally distributed with…

A: Given information- Population Mean µ = 35 Standard deviation (σ) = 9 Let X be the percent of fat…

Q: The height of women ages​ 20-29 is normally​ distributed, with a mean of 63.6 inches. Assume σ=2.6…

A:

Q: Let X represent the full height of a certain species of tree. Assume that X has a normal probability…

A:

Q: A random sample of n1 = 55 stemmed projectile points showed the mean length to be x1 = 3.00 cm, with…

A: There are two independent samples which are stemmed and stem less. We have to test whether there is…

Q: From a sample with n=32, the mean number of televisions per household is 2 with a standard deviation…

A: Given n=32 Mean =2 Standard deviation=1

Q: Suppose that the amount of time that students spend studying in the library in one sitting is…

A: Let a random variable, X~N(μ,σ2), the assumed z-score for a sample mean X¯ is, Z=X¯-μσndefined,…

Q: Let X represent the full height of a certain species of tree. Assume that X has a normal probability…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: Let xx represent the full height of certain species of tree. Assume that xx is normally distributed…

A: The variable x is the full height of certain species of tree which follows normal distribution with…

Q: The average American man consumes 9.9 grams of sodium each day. Suppose that the sodium consumption…

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Q: Q2 It is known that the average mark in a first-year math course exam is normally distributed with a…

A: Comment: As per the our company guidelines we are supposed to answer only one question. Kindly…