The population mean and standard deviation are given below. Find the indicated probability and determine whether the given sample mean would be considered unusual.For a sample of n = 31, find the probability of a sample mean being less than 12,748 or greater than 12,751 when μ = 12,748 and o=1.9.For the given sample, the probability of a sample mean being less than 12,748 or greater than 12,751 is(Round to four decimal places as needed.)C

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Answered: The population mean and standard…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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It is commonly believed that the mean body temperature of a healthy adult is 98.6° F. You are not entirely convinced. You believe that it is higher than 98.6° F. The temperatures for 12 randomly selected healthy adults are shown below. Assume that the distribution of the population is normal. 100.1, 96.8, 98.7, 100, 99.1, 98.3, 97.5, 100.9, 99.1, 100, 98.1, 100.1 What can be concluded at the a = 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? Ha: Select an answer Select an answer c. The test statistic O Question Help: (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) d. The p-value = e. The p-value is a f. Based on this, we should Select an answer the null hypothesis. g. Thus, the final conclusion is that ... There is sufficient evidence to conclude that the population mean body temperature for healthy adults is higher than 98.6° F. There is not sufficient…
The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample of n = 65, find the probability of a sample mean being greater than 218 if u = 217 and o = 5.6. %3D
a. The mean of this distribution is b. The standard deviation is c. The probability that the the child will be older than 5 years old?
Scores on an aptitude test are normally distributed with a mean of 960 and standard deviation of 120. Use the Cumulative Z-Score Table to answer the following questions. Write your answer rounded to the nearest whole number. If 1,570,000 students take the test.. how many would you expect to score above 1224? students ...how many would you expect to score above 972? students ...how many would you expect to score between 972 and 1224? students
The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample of n= 69, find the probability of a sample mean being less than 24.6 if µ= 25 and o = 1.29. Click the icon to view page 1 of the standard normal table. Click the icon to view page 2 of the standard normal table. ..... For a sample of n= 69, the probability of a sample mean being less than 24.6 if µ= 25 and o = 1.29 is (Round to four decimal places as needed.)
Which of the following predictions can be calculated using a geometric distribution? a. the number of expeditions that will reach the top of Mount Everest this year b. the number of trucks a weigh station will inspect before finding one that is overloaded C. both of the above d. neither of the above 31 SAMSUNG DIl 9% & 5 6 7 8. y
Find the weighted estimate, p to test the claim that p, = p2. Use a = 0.05. The sample statistics listed below are from independent samples. n, = 50, x, = 35, and = 60, x, = 40 O A. 0.682 O B. 0.238 C. 1.367 D. 0.328
An engineer wishes to determine the width of a particular electronic component. If she knows that the standard deviation is 1.3 mm, how many of these components should she consider to be 90% sure of knowing the mean will be within +0.4 mm? O 18 O 13 29 49
Find the indicated probability and interpret the result. From 1975 through 2020, the mean annual gain of the Dow Jones Industrial Average was 651. A random sample of 32 years is selected from this population. What is the probability that the mean gain for the sample was between 400 and 700? Assume o = 1540. The probability is (Round to four decimal places as needed.)
The reaction times for a random sample to a stimulant were recorded as 2.5, 3.6, 3.1, 4.3, 2.9. 2.3, 2.6, 4.1, and 3.4 seconds. Calculate the median. O 4.1 O 3.1 O 2.9 3.33333
Find the mean, IQR and standard deviation in the set of numbers below 0 0 0 1 4 79 255 580 1,070 1,969 2,215 2,139 2,532 2,816 2,782 1,742 931 1,053
The sample mean is the point estimator of O A. u О В. р O C. X O D. o

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