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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Can you please answer parts c and d of the attached question. Thank you.
Suppose that the number of points scored in a game comes from a normal population with an average of 12 points and a standard deviation of 9 points. Estimate the chance that the average points scored in ten randomly selected games will exceed 14.2 points. A. 0.4034 B. 0.0073 C. 0.2198 D. 0.2297
The mean height of an adult giraffe is 17 feet. Suppose that the distribution is normally distributed with standard deviation 1 feet. Let X be the height of a randomly selected adult giraffe. Round all answers to 4 decimal places where possible. b. What is the median giraffe height? ? ft. c. What is the Z-score for a giraffe that is 18.5 foot tall? d. What is the probability that a randomly selected giraffe will be shorter than 16.9 feet tall?
A population of values has a normal distribution with 45.2 and a 67.7. You intend to draw a random sample of size n = 108. Please answer the following questions, and show your answers to 1 decimal place. Find the value separating the bottom 35% values from the top 65% values. Find the sample mean separating the bottpm 35% sample means from the top 65% sample means.
I need help with the 2 questions. Thanks
Refer to the accompanying table, which describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Find the mean and standard deviation for the number of girls in 8 births. attached is the data table. dont copy from google The mean is --------girl(s). (Round to one decimal place as needed.) The standard deviation is ------girl(s). (Round to one decimal place as needed.)
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?
6:16 Amylab.pearson.com Here are 6 celebrities with some of the highest net worths (in millions of dollars) in a recent year: Oprah Winfrey (3200), Michael Jordan (1700), Paul McCartney (1200), J. K. Rowling (1000), David Copperfield (1000), and Jerry Seinfeld (950). Find the range, variance, and standard deviation for the sample data. What do the results us about the population of all celebrities? Based on the nature of the amounts, what can be inferred about their precision? The range is $ 2250 million. (Round to the nearest integer as needed.) The variance is 764417 million dollars squared. (Round to the nearest integer as needed.) The standard deviation is $ million. (Round to the nearest integer as needed.)
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 %

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