Suppose you know that the distribution of sample proportions of fifth grade students in a large school district who readbelow grade level in samples of 100 students is normal with a mean of 0.30 and a standard deviation of 0.08. You selecta sample of 100 fifth grade students from this district and find that the proportion who read below grade level in thesample is 0.46. This sample proportion lies 2 standard deviations above the mean of the sampling distribution. What isthe probability that a second sample would be selected with a proportion greater than 0.46? Round to three decimalplaces as needed.OA. 0.018OB. 0.977O C. 0.982O D. 0.0234

Given that Sample size n =100 Mean=0.30 Standard deviation =0.08

Answered: uppose you know that the distribution…

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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The average price of a college math textbook is $166 and the standard deviation is $21. Suppose that 13 textbooks are randomly chosen. Round all answers to 4 decimal places where possible. What is the distribution of ¯xx¯? ¯xx¯ ~ N(,) For the group of 13, find the probability that the average price is between $169 and $174. Find the third quartile for the average textbook price for this sample size. $ (round to the nearest cent) For part b), is the assumption that the distribution is normal necessary? YesNo
Majesty Video Production Inc. wants the mean length of its advertisements to be 30 seconds. Assume the distribution of ad length follows the normal distribution with a population standard deviation of 2 seconds. Suppose we select a sample of 16 ads produced by Majesty. f. What is the probability that the sampling error would be less than -1.5 or more than 1.5? (Round your answer to 4 decimal places.) Answer is complete but not entirely correct. Probability 0.27 8 %
> Question 4 The lengths of adult males' hands are normally distributed with mean 192 mm and standard deviation is 7 mm. Suppose that 7 individuals are randomly chosen. Round all answers to 4 where possible. a. What is the distribution of ? - N( b. For the group of 7, find the probability that the average hand length is more than 188. c. Find the first quartile for the average adult male hand length for this sample size. d. For part b), is the assumption that the distribution is normal necessary? O No Yes Hint: Some Helpful Videos: • Finding the Sampling Distribution [+] • Finding a Probability Using the Central Limit Theorem [+] • Finding Value Given a Probability Using the Central Limit Theorem [+] . The Central Limit Theorem For ns [+] Hint Submit Question 40 % $ R 5 16 T 4- ^ 6 4+ Y 90 & BA 7 * U 19 144 8 ly 1 tio C I DII 9 DDI O P A
I keep ending up 76 and the answer is incorrect so how do I find the correct answer?
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Majesty Video Production Inc. wants the mean length of its advertisements to be 30 seconds. Assume the distribution of ad length follows the normal distribution with a population standard deviation of 2 seconds. Suppose we select a sample of 16 ads produced by Majesty. f. What is the probability that the sampling error would be less than -1.5 or more than 1.5? (Round your answer to 4 decimal places.) Answer is complete but not entirely correct. Probability 0.27 X %
answer A, C, and D
Help needed The World Health Organization's (W.H.O.) recommended daily minimum of calories is 2600 per individual. The average number of calories ingested per capita per day for the US is approximately 2460 with a standard deviation of 500. If we take a random sample of 36 individuals from the US, what is the probability that the sample mean exceeds the W.H.O. minimum?
The average price of a college math textbook is $170 and the standard deviation is $22. Suppose that 42 textbooks are randomly chosen. Round all answers to 4 decimal places where possible. What is the distribution of ¯xx¯? ¯xx¯ ~ N(,) For the group of 42, find the probability that the average price is between $169 and $173. Find the third quartile for the average textbook price for this sample size. $ (round to
The average price of a college math textbook is $180 and the standard deviation is $26. Suppose that 18 textbooks are randomly chosen. Round all answers to 4 decimal places where possible. What is the distribution of ¯xx¯? ¯xx¯ ~ N(,) For the group of 18, find the probability that the average price is between $182 and $187. Find the third quartile for the average textbook price for this sample size. $ (round to the nearest cent) For part b), is the assumption that the distribution is normal necessary? YesNo
You find out that the average 10th grade math score, for Section 6 of the local high school, is 87 for the 25 students in the class. The average test score for all 10th grade math students across the state is 85 for 1,800 students. The standard deviation for the state is 3.8. What z score do you calculate? What is the area between the mean and the z score found in Appendix A of the textbook? What does this mean about the probability of this test score difference occurring by chance? Is it less than 0.05?

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