2. Suppose a distribution has a mean µ = 6 and standard deviation o = 2. What is the value of x if it is z = +3.00? a. 20 b. 18 C. 6 d. 12

Q: IQ scores form a normal distribution with a mean of = 100 and a standard deviation of o = is the…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: 7. Suppose the distribution of the population has a standard deviation of 144. What sample size is…

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Q: 1. A normal distribution has μ = 30 and σ = 5. a. Find the z score corresponding to x = 25.

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Q: Suppose a population is known to be normally distributed with a mean, u, equal to 144 and a standard…

A: Let us consider the Population is denoted by X which is known to be normally distributed with a mean…

Q: .Suppose a population is known to be normally distributed with a mean, u, equal to 144 and a…

A: Given data,μ=144σ=27P(90<144)=?

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: For a normal distribution with a mean of m=60 and standard deviation of s=10, find the proportion of…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

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: Suppose x has a normal distribution with mean 50 and standard deviation 6.   a. What percent of the…

A: (a)   Obtain the percent of the x values lie between values 44 and 50. The percent of the x values…

Q: 3. Assuming that the samples comes from normal distributions, find the margin of error E, given the…

A: Given that

Q: Suppose a population is known to be normally distributed with a mean, µ, equal to 116 and a standard…

A: We have, Mean μ=116 Standard deviation σ=14 X~N116,14 Now,…

Q: 3. Which of the following statements is true about the no A. The normal distribution curve has a…

A: We know that a normal distribution is a continuous random variable. 1. For any probability…

Q: 5. If the variance equal 16, the standard deviation equal: OA. 4 OB. 10 O C. 5 OD. 3 O E.2 6. If the…

A:

Q: 2. Suppose Y has a standard normal distribution. Define U = Y. Show that U has a gamma distribution…

A: Given that  Suppose Y has a standard normal distribution. Define U = Y ^ 2 . Show that U has a gamma…

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: For a normal distribution with a mean of μ = 70 and a standard deviation of σ = 10, find the…

A: (a) Obtain the proportion of the population scores greater than 80. The proportion of the population…

Q: 15. In a distribution, the critical values are based on b. z с. t 'd. df a. n

A: We need to use the concept of critical values and distributions.

Q: For a normal distribution with a mean of μ = 100 and a standard deviation of σ = 15, what is…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 15 X~N (100, 15)

Q: Suppose X has a normal distribution with mean 125 and standard deviation 15.  Which of the following…

A: Mean=M=125, Standard deviation=S=15

Q: 1. The data point that lies at the 50th percentile is also known as the a. mean b. median c. mode d.…

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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>8 Answer: b.…

Q: Assume Tha The ages of children at Happy Times Day care" normally distributed with a mean of 3.1…

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Q: 12. A normal distribution has a mean of µ = 70 and a standard deviation of o = 8. For each of the…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: Suppose a population is known to be normally distributed with a mean, µ, equal to 116 and a standard…

A: Let X denote the distribution of population. Given that X ~ N(mean = 116, SD = 14) Then Z = (X -…

Q: For a normal distribution with a mean of μ = 90 and a standard deviation of σ = 5, what is p(X>87)?…

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Q: 50. using this normal quantile plot, can we treat this as a sample from an aPproximately normal…

A: Solution:  Yes We can treat the sample from an approximately normal Population.

Q: For a normal distribution a mean of 60 and a standard deviation of 10, find the proportion of the…

A: It is given that the mean is 60 and the standard deviation is 10.

Q: Suppose a population is known to be normally distributed with a mean, µ, equal to 144 and a standard…

A:

Q: Suppose a population is known to be normally distributed with a mean, u, equal to 144 and a standard…

A: In question,  Given that, a population is normally distributed with mean 144 and standard deviation…

Q: IQ scores form a normal distribution with μ = 100 and σ = 15. Individuals with IQs between 90 and110…

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Q: In this problem, assume that the distribution of differences is approximately normal. Note: For…

A: B A d   1.4 1.4 0   1.9 1.5 0.4   2.1 1.6 0.5   3.2 2.2 1   3.9 3.3 0.6   3.6 3 0.6…

Q: Suppose a population is known to be normally distributed with a mean, µ, equal to 116 and a standard…

A:

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 X has a normal distribution with mean 80 and standard deviation 5. What is the 90th…

A: Given that, Mean = 80 Standard deviation = 5

Q: 3 Find the t-value for an area 0.001 in the right tail of t-distribution with a sample of 10.

A: Given that  3) sample size n =10 Degree of freedom =df = n-1=9 NOTE:- According to bartleby…

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Q: 3. Determine the following from the graph. Show all your work. a. Determine the mean and standard…

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Q: Given x has normal distribution with a mean of a and standard deviation equal to 2. Which value of x…

A: The question is about normal distribution Given : Mean ( μ ) = a Std. deviation ( σ ) = 2 z score =…