1)Suppose you drew a random sample,n of 100 from a population and found mean =30, standard deviation = 0.2.How is the variance sampling distribution of X changed when the sample size is increased from100 to 200? A.variance will increase B.variance will decrease

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A: Given: A coin is tossed four times. X represents the number of tails. The objective is to find…

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A: Given: Standard deviation = SD = 12.0718

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Q: Suppose X has finite variance. Let Y = |X|. Does Y have the same, a smaller, or a larger variance…

A: Given that X has finite variance i.e. var(x)<∞ Let Y =|X| that means Y can take 2 values i.e. X…

Q: Suppose that average male weight in the US is 175 pounds with a standard deviation of 25 pounds.…

A: It is given that population mean µ=175 pounds, population standard deviation σ=25 pounds. Sample…

Q: Assume thAt scores on a standardized test are known to follow a bell shaped distribution with a mean…

A: L

Q: Suppose the population correlation coefficient between the error terms was -0.7. What is the…

A: Given that  Suppose the population correlation coefficient between the error terms was -0.7. What is…

Q: A single sample of n = 16 scores has a mean of M = 65 and an estimated standard error of 2 points.…

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Q: Current estimates suggest that 55% of the home-based computers in a foreign country have access to…

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Q: Suppose that the economic growth of a country is normally distributed with mean μ = 8 ppt, and…

A: Given : Economic growth of a country is normally distributed with mean μ = 8  and standard deviation…

Q: suppose the random variable X has a normal distribution with a mean of 10 and a variance of 16…

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Q: ize 400 is taken from a population with a mean of 610 and a standard deviation of 15. Find the…

A: Given, n=400 Mean (μ) = 610 Standard deviation (σ) = 15

Q: 2-For a sample of size 5, if x1 - = 5, x2 - i = -7, x3 - i= -4, x4 - i = 0, then determine the…

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Q: 3. A mathematics professor wants to determine whethern there is difference in the final averages…

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Q: i) What is the moment generating function of the sample mean? ii) What will be the mean of the…

A: It is given that Xi , i = 1, 2,. .......,10 follows given pdf f(x) i.e N(0,1)

Q: Suppose a random variable, x, arises from a binomial experiment. Suppose n = 8 and p = 0.62 (Must…

A: Given data, n=8 p=0.62

Q: Suppose a tire company developed two new brands of tires and would like to compare the variability…

A: (a)   State the hypotheses.

Q: When a population mean is compared to the mean of all possible sample means of size 25, the two…

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Q: it is known that the population variance equals 484. with a 0.95 probability, the sample size that…

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Q: A sample of n = 16 scores has a mean of M = 40 and a variance of s2 = 128.  What is the estimated…

A: It is given that the variance is 128 and the sample size is 16.

Q: (A) If the standard deviation of Set 1 is larger than Set 2, the variance of Set 1 is also larger…

A: Here, we need to identify which of the given statement(s) is/are true.

Q: If x, xy ... x be a random sample drawn from a normal population with mean u and variance o?, then…

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Q: Suppose that the rice mill wants to test its product to find out whether it meets the average weight…

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Q: b) The variance estimator from the two-stage cluster sampling will be always smaller than the…

A: Given problem Given that   The variance estimator from the two-stage cluster sampling will be…

Q: If the mean and variance are computed for each sample in an independent-measures two-factor…

A: The mean and variance are computed for each sample in an independent-measures two-factor experiment.

Q: 4 - The amount of chlorine in 100 cm3 water taken from a water tank was measured, the average was…

A: Null hypothesis: µ=2.15. Alternative hypothesis: µ>2.15.

Q: Suppose we have independent observations X1 and X2 from a distribution with mean u and X1+X22…

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Q: To compare the mean lengths of time to recovery after two surgical procedures I and II, 10 patients…

A: The mean for procedure I is 7.3, variance is 1.25 and mean for procudure II is 8.9 and varaince is…

Q: Assuming that the height of male students in a large university is normally distributed with mean…

A: Mean is given to be μ=172.7 and standard deviation is σ=57.76=7.6 The sample mean μx=μ=172.7…

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Q: A If the computed value of variance and standard deviation is zero (0), this suggests that the data…

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Q: If independent random variables 'X' and Y have the variances 36 and 16 respectively, find the…

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Q: 8. A random sample of size 16 is to be taken from a normal population having mean 100 and variance…

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Q: The random variable xx represents the number of emails received at a help desk in one hour, and it…

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Q: suppose the random variable X has a normal distribution with a mean of 10 and a variance of 16…

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A: Given: A recent study of 20 individuals.  That is sample size n1=20 the average number of therapy…

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Q: A population of N = 10 scores has µ = 21 and σ = 3. What is the population variance?

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Q: A sample of n = 25 scores has a mean of x̅ = 65 and an estimated standard error of sM = 2 points.…

A: Given that, x̅ = 65sM = 2 n=25 The formula of sample variance is, Using the standard error of…

Q: 7. A random sample of size 225 is drawn from a population with mean 100 and standard deviation of…

A: Given that the population mean=100 And standard deviation=20 n=sample size=225

Q: Suppose it is known that the response time of healthy subjects to a particular stimulus is a…

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