here is a 61​% chance that x̄ is above what​ value?

Q: population of values has a normal distribution with μ=198.2μ=198.2 and σ=35.4σ=35.4. You intend to…

A: Let the random X follows normal distribution with μ=198.2 and σ=35.4 The random sample size is, n =…

Q: For a population with µ = 60 and σ = 20, the Sampling distribution of the Mean, based on n = 16 will…

A:

Q: 15.3. You intend to draw a random sample of size n = 37. Please answer the following questions, and…

A: Given a Population of values has a normal distribution with μ=117.9 and σ=75.3. And random sample…

Q: what is the probability that x<70?

A: Let , X→N(μ=100 , σ=10) Our aim is to find the P(X&lt;70)

Q: For a normal population with µ = 100 and σ = 9, what is the probability of obtaining a sample mean…

A: According to the given information, we have Mean = 100 Standard deviation = 9 Sample size = 25

Q: If one score is randomly selected from a normal distribution with µ = 22 and σ = 16, what is the…

A: We have:-   according to given question random  variable follows normal distribution as follows…

Q: For a population with µ = 60 and σ = 20, the Sampling distribution of the Mean, based on n = 16 will…

A:

Q: given a normal distribution curve, what is the area below a z-score of -1.2?

A: Given that, The z-score value is -1.2.

Q: Suppose we have a normal distribution with µ = 10

A: Let X be a random variable which follows a normal distribution with mean μ and standard deviation…

Q: Given a normal distribution with μ=103 and σ=15​, and given you select a sample of n=9​, There is…

A: Given data: Mean = 103 Standard deviation  = 15 Sample size = 9

Q: 1. What X score corresponds to the lowest 16.60% of the scores where u = 20 and o=2 for a Normal…

A: Given Data: Let X represent the normal distribution   X~ Normal (20, 22)

Q: A population of values has a normal distribution with μ=203.6μ=203.6 and σ=45σ=45. You intend to…

A: Obtain the value separating the bottom 44% values from the top 56% values. The value separating the…

Q: A population forms a normal distribution with amine of 85 and a standard deviation of 24 compute the…

A: We have given that  X~N( μ , ?^2 ) μ= 85    ,   ?=24  , n= 9 , mean= xbar=91

Q: A sample of 2500 scores was drawn from a normal distribution with µ = 200 and σ = 20. What was the…

A: Sample size, n=2500 Population mean, μ=200 Population standard deviation, σ=20

Q: If a distribution is normal with μ = 10 and σ = 5, what is the z score of 20?

A:

Q: A population of values has a normal distribution with μ=248.6�=248.6 and σ=97.6�=97.6. You intend to…

A: μ=248.6σ=97.6n=246

Q: A population of values has a normal distribution with u = 123.3 and o = random sample of size n =…

A:

Q: A group of students decide to participate in a national strength test. Assume a normal distribution…

A: Standardized z-score:   The standardized z-score represents the number of standard deviations the…

Q: For a normal distribution with a mean of u = 30 and o = 10, what is the probability of selecting an…

A: Given : A normal dist. with Mean (μ) = 30 Standard deviation (σ) = 10 Let X be a normal variable…

Q: For a normal population with mean = 100 and population standard deviation = 20: A. What is the…

A:

Q: Assuming a normal distribution, for a sample with M-40 and s=4, about 95% of the individuals will…

A: 32 and 48

Q: If a distribution is normal with μ = 60 and σ = 15, what is the z score of 40?

A:

Q: A population of values has a normal distribution with H = 36 and o = 31.3. You intend to draw a…

A: Introduction: Define X as the random variable of interest. It is given that X has a normal…

Q: A population of values has a normal distribution with μ=154.9 and σ=69.8. You intend to draw a…

A: From the provided information, Mean (µ) = 154.9 Standard deviation (σ) = 69.8 Sample size (n) = 196

Q: A normal distribution has a mean of u = 70 with o =3. What is the probability of sampling an…

A: We have find givan normal distribution...

Q: A sample of n = 10 scores has a mean of M = 3. What is ΣX for this sample?

A: Solution: From the given information, M=3 and n=10.

Q: Given a normal distribution with μ=45 and σ=5​   For this​ distribution, 9​% of the values are…

A:

Q: population of values has a normal distribution with μ=147.4μ=147.4 and σ=92.7σ=92.7. You intend to…

A: The population values follows a normal distribution Mean (μ ) = 147.4 Standard deviation (σ) = 92.7…

Q: For a population with a standard deviation of σ = 5, what is the z-score corresponding to a score…

A: We have to find z score..

Q: A population of N = 6 scores has ΣX = 42. What is the population mean?

A: Given ,Population of N=6 scoresand Σx =42

Q: A population of values has a normal distribution with μ=86.1μ=86.1 and σ=46.3σ=46.3. You intend to…

A: 88th implies area of 0.88 to the left of the normal curve. Refer Standard normal table/Z-table,…

Q: A population of values has a normal distribution with u = 244.3 and o = 12.9. You intend to draw a…

A: Use excel formula "=NORM.S.DIST(0.109, TRUE)" to find the probability.

Q: In a normal distribution of test scores, a score of X = 70 has a percentile rank of 54%. This means…

A: The pth percentile of a set of observations is the value below which, p% or (p/100) proportion of…

Q: Given a normal distribution with μ=50 and σ=4​, and given you select a sample of n=100​,   There…

A:

Q: A population of values has a normal distribution withu = 147.7 and o = 14.9. You intend to draw a…

A: Obtain the value separating the bottom 41% values from the top 59% values.   The value separating…

Q: opulation with mean = 100 and population standard deviation = 20: a.  What is the proportion  of x…

A: a. Given: μ=100, σ=20, n=10  The corresponding z-value needed to be computed: The proportion  of x…

Q: Suppose you are testing H0: μ = 21 vs. H1: μ > 21, from a normal distribution with σ² = 28 and n =…

A:

Q: esearcher expects a treatment to produce an increase in the population mean. Assuming a normal…

A: 1. According to the sum, A researcher expects treatment to produce an increase in the population…

Q: A population of values has a normal distribution with μ=128 and σ=32.4 You intend to draw a random…

A: Here, μ=128, σ=32.4, and n=120.