n a the normally distributed variable X with mean = 15 and standard deviation = 2.5, find: The value of k such that P(X < k) = 0.2514

Q: For a population with a mean of u=100 and a standard deviation of o=20, find the z-score for each of…

A: Z-score is computed for statistical analysis. It can be negative or positive. It is the number of…

Q: Suppose X is normally distributed with a mean of 47 and a standard deviation of 23. a. Find P(X ≤…

A: Given that the random variable is normally distributed with mean of   and a standard deviation of .

Q: For a variable x that is noramally distributed with a mean of μ = 50 and a standard deviation σ = 5,…

A: It is given that the mean and standard deviation are 50 and 5, respectively.

Q: A particular lake is known to be one of the best places to catch a certain type of fish. In this…

A: 0 0.43 0 0 0 1 0.37 0.37 1 0.37 2 0.12 0.24 4 0.48 3 0.07 0.21 9 0.63 4 0.01 0.04 16 0.16…

Q: If X has a normal distribution with mean µ = 11 and variance σ2  = 16, find the value of x if P (X…

A: It is given that, X~ N (11, 16).

Q: Given that X is normally distributed with a mean of 50 and a standard deviation of 4, determine the…

A:

Q: The mean of x1−x2 is _________ ​(Type an integer or a decimal. Do not​ round.)   The standard…

A: Given x1 = 30s1 = 24n1 = 16 x2 = 30s2 = 40n2 = 25

Q: The state of California has a mean annual rainfall of 22 inches, whereas the state of New York has a…

A: Given,for California:mean=22standard deviation(σ)=8sample size(n)=30for New York :mean=42standard…

Q: For a continuous variable with a normal distribution where the mean is 1.77 and the standard…

A: According to the provided information, 1) The probability that x is less than 3.0 can be calculated…

Q: If the variable Z is normally distributed with mean equal to 0 and standard deviation equal to 1.…

A: Given that Z ~ N (0,1 ) Find P(Z &lt; -0.39 or Z &gt; -0.13) = ?

Q: A fire department in a rural county reports that it's response time to fires is approximately…

A: According our policy we can answer only first question for remaining please repost the question.

Q: What should this income cutoff be to make sure that not more than 5 percent of the population…

A: Let X be the random variable that has monthly income. Given that, X~N(μ=$4000, σ=$1000)

Q: The lifetime X of a widget has a Weibull distribution with parameters a = 2 and ß = 5. The mean…

A: Given.... The lifetime X of a widget has a Weibull distribution with parameters a = 2 and 3 = 5. The…

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A: Given information: It was stated to assume that Z scores are normally distributed. Mean =0 and…

Q: The profits of a mobile company are normally distributed with Mean of R.O (19 x 10) and standard…

A: Solution: c. Let X be the profit of a mobile company. From the given information, X follows normal…

Q: Let x = red blood cell (RBC) count in millions per cubic millimeter of whole blood. Suppose for…

A: as per given information :  x = red blood cell (RBC) count in millions per cubic millimeter of whole…

Q: Given a normally distributed variable x with mean 18 and standard deviation 2.5, find: P (x x) =…

A:

Q: Ex5: Assume that X is normally distributed with a mean of 10 and a standard deviation of 2.…

A: Solution-: Given: μ=10,σ=2 We want to determine, (a) P(X&lt;13)=? and P(X&gt;9)=? (b)…

Q: Use the central limit theorem to find the mean and standard error of the mean of the indicated…

A: Given, The red meat consumption by people in a country in a recent year was normally distributed…

Q: eights of 9-ounce bags of a particular brand of potato chips can be modeled by a normal distribution…

A: Consider a random variable which represents the  weights of 9-ounce bags of a particular brand of…

Q: If x is normally distributed with a mean of 6 and a standard deviation of 4, find P(x>8) a. 0.1915…

A: If x is normally distributed with a mean of 6 and a stnadard deviation of 4, find Px&gt;8 Answer: b.…

Q: Let x have a normal distribution with a mean of -30.2 and a standard deviation of 10.67. The z value…

A:

Q: Choose the correct option. For a frequency distribution mean deviation from mean is computed by -…

A:

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A: Sketch the normal curve and shade the area of 0.1606 to the left of "e" under the normal curve.…

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1.If…

A: From the given information, Assume that z-scores are normally distributed with a mean of 0 and a…

Q: A variable of two populations has a mean of 30 and a standard deviation of 24 for one of the…

A: Given: For first population: Mean, E(X1)=30Standard deviation σ1=24Sample size, n1=9 For second…

Q: From the following information, find standard deviation of X and Y variable.   Σx = 235          Σy…

A: The objective of this question is to calculate the standard deviation of two variables X and Y given…

Q: If W is a normally distributed with the mean of 225, find the standard deviation, given that P(X <…

A: Given data: Mean  = 225 find: Standard deviation

Q: Suppose that f (x) = (3/2)x2 for −1< x < 1. Determine the mean and standard deviation of X.

A:

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A: Given,P(z&lt;e)=0.0516

Q: P(x ≤ 16) when a variable is normally distributed with mean 21 and standard deviation 7. Give the…

A: Given data,Mean μ=21sd     σ=7P(X≤16)=?

Q: Suppose X has a normal distribution with a mean of 1000 and a standard deviation of 200. Find the…

A: We have given that,  X has a normally distributed with mean (mu)= 1000 and standard deviation…

Q: For a chi-squared distribution, find (a) x²o.02s when v = 15; (b) x²o01 when v = 7; (c) x³o.0s when…

A:

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A: Given,P(-b&lt;Z&lt;b)=0.1904

Q: For a population with a mean of μ = 100 and a standard deviation of σ = 20, Find the score (X…

A:

Q: For a continuous variable with a normal distribution where the mean is 2.0, the standard deviation…

A: Given: μ=2.0σ=1.0

Q: For the proprablility distribution table below: P(x) 0.17 0 1 2 3 4 0.06 0.18 0.25 0.34 Find the…

A: Given information: x P(x) x*P(x) 0 0.17 0 1 0.06 0.06 2 0.18 0.36 3 0.25 0.75 4 0.34…

Q: Án SRS of 25 recent birth records at the local hospital was selected. In the sample, the average…

A: Given that

Q: The state of California has a mean annual rainfall of 22 inches, whereas the state of New York has a…

A: 22 3 30 42 3 45 Mean of the sampling distribution of the sample mean. Standard…