Let's assume that your sample mean and sample standard deviation are the true population mean and standard deviation, compute for the following probabilities C. P[X > 2650] Z-score: 2.78 P[Za]= 0.0027

Q: distribution of the sample mean whern Normal with mean p and variance o. Normal with mean o and…

A: The sampling distribution of a statistic is known as the the probability distribution of all the…

Q: nd mean and standard deviation if n and p are 10 and 0.2 respectively.

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Q: For bone density scores that are normally distributed with a mean of 0 and a standard deviation of​…

A: Assume, X be the random variable representing the bone density scores. It is mentioned that X…

Q: find the z-score for the value 69, when the mean is 96 and the standard deviation is 5.

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Q: Find the​ z-score for the value 55​, when the mean is 79 and the standard deviation is 5.

A: The z score indicates how many standard deviations that a data points away from the mean. It can be…

Q: Use z-scores to make the following comparison. A high school student took two college entrance…

A: z-score:X follows a distribution that has mean µ and the standard deviation σ. It is the number of…

Q: Solve for the range, variance, and standard deviation of this data: 40, 34, 50, 46, 47, 39.

A: Given data set 40,34,50,46,47,39

Q: Assume that adults have IQ scores that are normally distributed with a mean of 98.7 and a standard…

A: Given data, μ=98.7σ=16.2P(X<x)=25%x=?

Q: Compute the z-score for the data value x with the given values for the mean and standard deviation.…

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Q: You should do the test with Z rather than t when The numbers are sampled from a normal distribution.…

A: We should use Z rather than t, when we have- When the population standard deviation is known. And…

Q: For a t distribution with 15 degrees of freedom, 90% of the distribution is within how many standard…

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Q: IQ test scores are normally distributed with a mean of 99 and a standard deviation of 11. An…

A: IQ test scores are normally distributed with a mean of 99 and a standard deviation of 11. An…

Q: Use z-scores to make the following comparison. A high school student took two college entrance…

A: Let X denote the SAT score and it follows normal distribution with mean of μ=950 and standard…

Q: art professor gives an A to any student in the top 9% of the distribution. The grades are normally…

A: Given X~N(mean μ=60, standard deviations σ=5) P(X>b)=9%

Q: b) If three bags are selected at random, find the probability that 2 bags weigh more than 55 kg. c)…

A: We want to find the probability

Q: Assume the test scores in your class are normally distributed with a mean of 84. You scored a 96,…

A: Given: mean = 84.

Q: The annual income for a sample of 450 part-time students is normally distributed with a mean income…

A: Given that: Population mean, μ=31000 Population standard deviation, σ=3000 Sample size, n=450

Q: Square of the standard deviation is called

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Q: Calculate the z-score for the largest value and interpret it in terms of standard deviations. Do the…

A: It is given that mean is 28.766, standard deviation is 3.369, the largest value is 35.100 andthe…

Q: Let’s assume that weight is normally distributed with a mean of 160 and a standard deviation of 25…

A: Step-by-step procedure to obtain the middle 80% 0f all people lie between which two weights using…

Q: You perform a one-sample t test and calculate a t statistic of 3.0. The mean of your sample was 1.3…

A:

Q: A fitness center bought a new exercise machine called the Mountain Climber. They decided to keep…

A: Given Information :  A fitness center bought a new exercise machine called the Mountain Climber.…

Q: Use the normal distribution of IQ​ scores, which has a mean of 130 and a standard deviation of 16​,…

A:

Q: The z-score measures how many standard deviation a given value is above or below the mean. True or…

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Q: The distribution of heights in a population of women is approximately normal. Sixteen percent of the…

A: given data  normal distribution empirical rule: approximately 68 -95 -99.7% data fall within 1σ…

Q: Use z-scores to make the following comparison. A high school student took two college entrance…

A: SAT 950 130 1110 ACT 22 4 27

Q: What is the z-score of x = 3 if it is 2 standard deviation to the left of the mean? O -3 O -2 O -1 O…

A:

Q: Let the physics exam scores X follow a normal distribution with mean 80 and standard deviation 10.…

A: Given,mean(μ)=80standard deviation(σ)=10

Q: Assume that intelligence follows a normal distribution and that on a standard test for intelligence…

A: Given that.   X~N( μ , ?)   μ=100     , ?=15   Z-score =( x - μ )/?

Q: o/vn measures the standard deviation of the sampling distribution of mean. Another name for it is…

A: measures the standard deviation of the sampling distribution of mean. Another name for this term is…

Q: Use the normal distribution of IQ​ scores, which has a mean of 75 and a standard deviation of 11​,…

A: GivenMean(μ)=75standard deviation(σ)=11