The probability distribution shown below describes a population of measurements. Suppose that we took repeatedrandom samples of n 2 observations from the population described above. Find the expected value of the samplingdistribution of the sample mean.О а.4O b. 3O c. 2O d. 0O e. 1The sampling distribution of the sample mean is shown below. Find the expected value of the sampling distribution ofthe sample mean.O a. 6О b.4Oc. 5O d. 7

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Answered: The probability distribution shown…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Find the margin of error for the given values of c, s, and n. cequals=0.99 sequals=3.9 nequals=15 view the t-distribution table. The margin of error is(Round to one decimal place as needed.)
2% of the world population is naturally blond. In a random sample of 100 people, the proportion of natural blonds is found. The sampling distribution of is O A. approximately normal because p is always approximately normal O B. not approximately normal because np 5
For a continuous random variable X, the population mean and the population standard deviation are 704 and 80 respectively. You extract a sample of 64 elements from this population. The standard deviation of the sampling distribution of the sample mean is: O d. 80 O e. 6400 O b. 88 O c. 10 a. 44/5
When pick the correct answer please pick one of the A, B, C answers below.
Complete parts (a) through (e) for the population data below. 2, 4, 6 d. For each of the possible sample sizes, find the probability that the sample mean will equal the population mean. n Probability 1 1 3 2 3 3 1 (Type integers or simplified fractions.) e. For each of the possible sample sizes, find the probability that the sampling error made in estimating the population mean by the sample mean will be 0.5 or less (in magnitude), that is, that the absolute value of the difference between the sample mean and the population mean is at most 0.5. n 1 2 3 Probability (Type integers or simplified fractions.)
Determine whether the statement is true or false. If it is false, rewrite it as a true statement. A sampling distribution of a sample mean is normal only if the population is normal. Choose the correct answer below. O A. The statement is false. A sampling distribution of a sample mean is approximately normal if either n ≥ 30 or the population is normal. B. The statement is false. A sampling distribution of a sample mean is never normal. O C. The statement is false. A sampling distribution of a sample mean is approximately normal only if n ≥ 30. OD. The statement is true.
Parametric Inferential Statistics
Determine whether the statement is true or false. If it is false, rewrite it as a true statement. A sampling distribution is normal only if the population is normal. Choose the correct answer below O A. The statement is false. A sampling distribution is never normal. O B. The statement is false. A sampling distribution is normal only if n230. O C. The statement is true. O D. The statement is false. A sampling distribution is normal if either n230 or the population is normal. Click to select your answer. ... acer
The sampling distribution of the mean depends on the sample size. O False O true
The expected value of the mean is: The mean of the true population means The mean of the standard errors of the mean. The mean of the random sampling errors. The mean of the sampling distribution of the mean.
Consider the population described by the probability distribution shown below. The random variable is observed twice with independent observations, as shown below. Complete parts a and b. Full data set X 3 4 5 6 p(x) 0.2 0.2 0.3 0.3 a. Complete the sampling distribution table. Type the medians in ascending order. Median 3 5 6 Probability || 0.08 0.24 (Simplify your answers. Type integers or decimals.) 4 0.18 (…) 0.04 Sample |3,3 3,4 3,5 Probability 0.04 0.06 Sample 5,3 5.4 Probability 0.06 0.06 3,6 4,3 0.06 0.04 4,4 4,5 4,6 0.04 0.06 0.06 5,5 5.6 6,3 6,4 0.09 0.09 0.06 0.06 6,5 6,6 0.09 0.09
According to Reader's Digest, 44% of primary care doctors think their patients receive unnecessary medical care. Use the z-table. a. Suppose a sample of 260 primary care doctors was taken. Show the sampling distribution of the proportion of the doctors who think their patients receive unnecessary medical care. E(p)= (to 2 decimals) (to 4 decimals) b. What is the probability that the sample proportion will be within ±0.03 of the population proportion? Round your answer to four decimals. c. What is the probability that the sample proportion will be within ±0.05 of the population proportion? Round your answer to four decimals. d. What would be the effect of taking a larger sample on the probabilities in parts (b) and (c)? Why? The probabilities would - Select your answer -increasedecreaseItem 5 . This is because the increase in the sample size makes the standard error, ,

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