Given a normally distributed variable X with mean 80 and standard deviation 5, what is the value of m such that P (0 < x < m) = 0.3340? a. 0.97 b. 78 c. -0.43 d. 85

Q: Assume that X is normally distributed with a mean of 12 and a standard deviation of 2. Determine…

A: From the provided information, Mean (µ) = 12 Standard deviation (σ) = 2

Q: For a population with u = 34, a score of X = 31 corresponds to z = -1.00. The standard deviation for…

A:

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A: It is assumed that the readings at freezing on a batch of thermometers are normally distributed with…

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 the mean and standard deviation of the GPAs at Loyola are Xbar = 1.675; and s =…

A: The objective of this question is to find Catherine's GPA given her z-score, the mean GPA, and the…

Q: Suppose the population standard deviation, o, of the drying time is unknown. The following…

A: The random variable drying times follows normal distribution. We have to construct 95% CI for the…

Q: X follows a normal distribution with mean 45 and standard deviation 6. The z-variate corresponding…

A: Answer : The value of the X-variate is : (c) 54.

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

A: Given that z scores are normally distributed with a mean of 0 and a standard deviation of 1.Want to…

Q: Assume that adults have IQ scores that are normally distributed with μ=38 and a standard deviation…

A:

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

A:

Q: 020 | 007 7. The number of messages sent per hour over a computer network has the following…

A:

Q: Suppose random variable X has a normal distribution with a mean of 98.2 and the standard deviation…

A: According to the given information, we have Mean = 98.2 Standard deviation = 3.2

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

A: Let Z-score are normally distributed with mean = 0 and standard deviation = 2 Then,  We will find…

Q: Suppose a dishwasher has a mean life of 12 years with an estimated standard deviation of 1.11 years.…

A: given data normal distributionμ = 12σ = 1.11n= 10

Q: X has a normal distribution with a mean of 95 and a standard deviation of 12. The z-value soccer for…

A: X has a normal distribution with a mean of 95 and a standard deviation of 12.

Q: 6.2 The Standard Normal Distribution Table: Find Zc Critical Value A distribution of values is…

A: Given Mean =90 Standard deviation=2

Q: X has normal distribution with mean D a. 0.0228 O b. 0.4772 O c. -0.33 O d. 0.9772

A:

Q: The probability that a randomly selected adult has an IQ less than 128 is (Type an integer or…

A: Given:  Consider X as a random variable that follows a normal distribution with mean 22 and…

Q: Q.5. Floods in a stream have the mean 600 m'/s and the standard deviation 400 m'/s. Please answer…

A: Given information: μ=600 m3/s, σ=400 m3/s a) x = 700 By applying normal distribution:-…

Q: The profits of a mobile company are normally distributed with Mean of R.O (180) and standard…

A:

Q: V. EV Variance standard deviation of 18kls. Suppose that the distribution of weights is not normal…

A: We have given that  Mean = 60 Standard deviation = 18   Note: According to Bartleby expert…

Q: A sample has a mean of M = 90 and a standard deviation of s = 20. b. Find the X value for each of…

A: The z-score for a particular value, X = x, is: z = (x –mean)/standard deviation   = (x-M)/S

Q: Find the standard​ deviation, s, of sample data summarized in the frequency distribution table given…

A: Data represents the frequency distribution with their class intervals.

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: If X is a normally distributed with mean 6 and standard deviation 5. Find P(-6 < X < 18) O a. 0.3849…

A:

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

A: Given Data: z follows the normal distribution Mean=0 SD=1

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: Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. For a random…

A: The hypothesized mean μ=69 The sample size n=144 The sample mean  x¯=69.5 The sample standard…

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: IQ scores are normally distributed with a mean of 100 and a standard deviation of 17. Assume that…

A: Given Mean=100 Standard deviations=17

Q: Use the formula to find the standard error of the distribution of differences in sample means x̅…

A:

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A:

Q: Porter averages 21 points per basketball game with a standard deviation of 4.5 points. Suppose…

A:

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

A: The given mean is 0 and standard deviation is 1.

Q: Suppose that the average life of a refrigerator before replacement is μ = 15 years with a (68% of…

A: Given that  The average life of a refrigerator before replacement is μ = 15 years 68% data range…

Q: Which of the following are true when calculating z-scores for a distribution of numbers?    Select…

A: Here use basic of standard normal distribution  Standard normal distribution have Mean zero and…

Q: The standard deviation in the pressure required to open a certain valve is known to be o=1.2 psi.…

A:

Q: Assume that X is normally distributed with a mean of 3 and a standard deviation of 4. Determine the…

A: Given that mean =3 ,s.d =4

Q: Given that x is a normally distributed variable with mean equal to 40 and standard deviation equal…

A: P(x ≤ 45) = 0.8413

Q: Suppose the mean and standard deviation of the GPAs at school are  Xbar = 1.487; and s = 1.332…

A: Given: Let X be the random variable denoting the GPA of every student. and GPAs are normally…

Q: The random variable x has a normal distribution with u = 200 and o = 20. a. Find the probability…

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Q: If X has normal distribution with mean 80 and standard deviation 15. Find the P(X > 90) a. 0.7734 O…

A:

Q: The random variable x represents the number of boys in a family of three children. Assuming that…

A: Answer; - Given a probability distribution                 x P(x) x*P(x) x^2*P(x) 0 0.125 0 0…

Q: Beetles' weight has a normal distribution with mean of 85g and standard deviation of 6.4g. Suppose…

A: Beetles' weight has a normal distribution with mean of 85g and standard deviation of…