QUESTION 14Assume that the population of a store customers is infinite. For this population, the proportion of those customers who buy the service plan is 0.19. For the sample size of 238, find the standarddeviation of the sampling distribution of the sample proportion (standard error). Round your answer to four decimal places.QUESTION 15The standard deviation of an infinite population is 17.90. For the sample size of 31, find the standard deviation of the sampling distribution of the sample mean. Round your answer to two decimalplaces.

14) Given P=0.19 N=238 For for standard deviation of the sampling distribution of the sample…

Answered: QUESTION 14 Assume that the population…

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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Answer according to Swikness theorm. Thank you • Illustration: The mean and standard deviation of a set of 100 observations were 40 and 5 respectively by a computer which by mistake took the value 50 in worked out as place of 40 for one observation. Find the correct mean and variance.
Find the mean and standard error of the mean of the sampling distribution. Then sketch a graph of the sampling distribution. The prices of photo printers on a website are normally distributed with a mean of $238 and a standard deviation of $67. Random samples of size 33 are drawn from this population and the mean of each sample is determined.
Suppose that 44% of all adults think that airline travel is safer than driving. An opinion poll plans to ask a simple random sample (SRS) of 1021 adults about airplane safety. The proportion of the sample who think that airline travel is safer than driving will vary if we take many samples from the same population. The sampling distribution of the sample proportion is approximately Normal with mean of 0.44 and standard deviations about 0.016. Sketch this Normal curve and use it to answer the following questions. 06 ccccccccccccit What is the probability p of getting a sample the misses the truth (44%) by 3.2% or more? Report your answer as a percent. p= W O i 9 hp -3 43°F Clear 6:38 PM 11/26/2022 % 1
For the following situation, find the mean and standard deviation of the population. List all samples (with replacement) of the given size from that population and find the mean of each. Find the mean and standard deviation of the sampling distribution and compare them with the mean and standard deviation of the population. The word counts of five essays are 506, 623, 544, 614, and 587. Use a sample size of 2.
Please state if the statement is correct or wrong and explain why. Statement 1. The sampling distribution of the sample mean with a sample size of 12 has a smaller standard error than that of the sampling distribution of the sample mean with a sample size of 13. Statement 2. Degrees of Freedom is one of the parameters of the normal distribution. Statement 3. A parameter is a function of a sample.
A population has a mean p= 75 and a standard deviation o= 6. Find the mean and standard deviation of a sampling distribution of sample means with sample size n= 36. (Simplify your answer.)
Suppose that we are interested in how much money the average football fan spends on food at a single football game. To try to answer this, we asked 72 randomly selected football fans at a game how much money they had spent on food. The sampled results show that the sample mean and standard deviation were NZ$36.00 and NZ$14.65, respectively. Use the sample statistics to calculate an estimate of the standard error for the sample mean. Give your answer to 2 decimal places.
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= 19 inches. Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout. Suppose a friend tells you that the average length of trout caught in Pyramid Lake is u However, a survey reported that of a random sample of 51 fish caught, the mean length was x 18.6 inches, with estimated standard deviation s = 3.3 inches. Do these data indicate that the average length of a trout caught in Pyramid Lake is less than μ = 19 inches? Use a = 0.05. = (a) What is the level of significance? State the null and alternate hypotheses. O Ho: μ = 19 in; H₁: μ ‡ 19 in Ho: μ> 19 in; H₁: μ = 19 in O Ho: μ 19 in O Ho: μ = 19 in; H₁: μ 0.010 O 0.0010 < P-value < 0.010 O 0.250 < P-value < 0.0010 0.125 < P-value < 0.250 O P-value < 0.125 Sketch the sampling distribution and show the area corresponding to the P-value.
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