If the population mean and variance are 154 and 36 respectively, then the sample size that makes a standard error of the sample mean equals 0.50 must be a. None of the choices b. 12 с. 72 d. 144

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A: As per our company guidelines we are supposed to answer only first 3 sub-parts. Kindly repost other…

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A: Given  (a) S2=2.25  (b) S2=3.24  (C) S2=7.29

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A: Hey there! Thank you for posting the question.  Since you have posted a question with multiple…

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Q: The range and the variance are both measures of distance.

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Q: Consider a sample with a mean of 30 and a standard deviation of 5. Use Chebyshev’stheorem to…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: A set of 5 scores has SS = 20. If the scores are from a sample, the sample variance is ____. If the…

A: Given ,         Sample size n=5          and S.S = 20Sample variance = S.Sn-1=205-1=204=5∴ Sample…

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Q: Consider a sample with a mean of 30 and a standard deviation of 5. Use Chebyshev’stheorem to…

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

Q: Suppose you were to take samples of size 100 from a population with a mean of 12 and a standard…

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A: Given that  Sum of squares (SS) = 212.69 Sample size (n) = 11   We know that  Variance (S2) = SSn-1…

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A: Reviewing information, n=No. of vehicles= 30 Y : Gas mileage of cars in MPG Var(Y)= 39.28

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A: we have to find standard deviation.

Q: Given the following observations : answer questions from 9-10: 408 401 410 415 390 400 395 450 406…

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Q: If a sample of size 16 is selected from a population that follows a normal distribution with mean 32…

A: Given If a sample of size 16 is selected from a population that follows a normal distribution with…

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Q: For the following set of scores: 6, 2, 3, 0, 4 If the scores are a population, what are the vari-…

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Q: Assuming the standard deviation remains constant. Which of the folle sample sizes would result in…

A: NOTE: As per the guidelines, we are supposed to solve the first question only. Please repost other…

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A: Given : P(y < 170) = 0.14 P(y > 200) = 0.03 Y is normally distributed.

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Q: the standard deviation of a sample of 50 observations equals 10. the variance of the sample equals?…

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Q: For a population that is normally distributed with a very large population size compared to the…

A: From the given information, let X be a random variable which follows normal distribution with mean…

Q: For a population with mean of 50 and standard deviation of 8, what is the raw score that corresponds…

A: GivenMean(μ)=50standard deviation(σ)=8z=2.50

Q: One sample has n = 5 scores and the second has n = 10 scores. If the pooled variance for the two…

A: Given information Pooled variance = 30 n1 = 5, n2 = 10

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Q: Four of your classmates measured the diagonal length of the blackboard. Classmate A measured it as…

A: