The distribution of scores on a standardized aptitude test is approximately normal with a mean of 490 and a standard deviation of 100. What is the minimumscore needed to be in the top 10% on this test? Carry your intermediate computations to at least four decimal places, and round your answer to the nearestinteger.OXx3?BSubmit AssignmentCheck2022 McGraw Hill LLC. All Rights Reserved.►Save For LaterReserved. Terms of Use | Privacy Center | AccessibilityTerms of Use19 210:11*Abackspactabesc!1qa@2WS#m3eQd$4r9%5ftacerOll6gy&O7hU*8ji9k)0O-PWD190

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Answered: The distribution of scores on a…

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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Smith works as a welder inspector in a shipyard. He knows from keeping track of good and poor welds that 5% of all welds down for the afternoon shift will be poor. Calculate the standard error of proportion of poor welds if Smith checks 300 welds. O 0.0126 0.0016 O 0.05 O 0.95
Refer to the figure at the right. At a =0.10, can you reject the claim that the proportion of 18 to 24-year-olds living in their parents' homes in 2000 was the same for men and women? Assume the survey included a random sample of 248 men and 244 women. Percentage of 18- to 24-year olds iving in parents' homes 7051.5% 41.2% 46.6% 44.3% 2000 2012 I Men I Women Identify the null and alternative hypotheses. Choose the correct answer below. O B. Ho: P1 P2 O D. Ho: P, > P2 Cc. Họ: P1 = P2 Ha: P, SP2 H3: P, *P2 Find the critical value(s). The critical value(s) is(are) +1.65. (Round to two decimal places as needed. Use a comma to separate answers as needed.) Find the standardized test statistic. z= 2.29 (Round to two decimal places as needed.) Can you reject the claim that the proportion of 18 to 24-year-olds living in their parents' homes was the same for men and women in 2000? Yes , at the 10% significance level, there is sufficient evidence to support the claim.
Fill in the following values in the table using the rounded mean you got in the question above.Round each answer to 6 decimal places. First Six Presidents Age (X-X¯)^2 George Washington 57 John Adams 61 Thomas Jefferson 57 James Madison 57 James Monroe 58 John Quincy Adams 57 SUM What is the standard deviation of the First Six Presidents? Round your answer to 3 decimal places as neededStandard Deviation =
Do men take less time than women to get out of bed in the morning? The 42 men observed averaged 7.6 minutes to get out of bed after the alarm rang. Their standard deviation was 2.2. The 52 women observed averaged 9 minutes and their standard deviation was 2.1 minutes. What can be concluded at the a = :0.01 %3D level of significance?
Scores on a mathematics assessment test for eighth-graders have a mean of 284, a 10th percentile of 232, a 25th percentile of 256, a 75th percentile of 310, and a 90th percentile of 328. Interpret each of these numerical descriptive measures. Interpret the mean value of 284. Choose the correct answer below. OA. For this problem, the mean value of 284 represents the average test score on a mathematics assessment test for eighth-graders B. For this problem, the mean value of 284 represents the middle test score when the scores are arranged in ascending (or descending) order OC. For this problem, the mean value of 284 represents the variation in the test scores on a mathematics assessment test for eighth-graders D. For this problem, the mean value of 284 represents the range of test scores on a mathematics assessment test for eighth-graders
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Use the dataset below to fill in the blanks. The space between the data and the blanks isprovided so that you can show each data value's deviation and each data value's deviation squared.Sixteen families were selected at random and the number of children in each was recorded 0 0 0 1 1 2 2 2 2 2 3 3 4 6 8 12
Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. The indicated IQ score is. (Round to the nearest whole number as needed.) M X 0.4207
Use the expression in the accompanying discussion of sample size to find the size of each sample if you want to estimate the difference between proportions of men and women who own smartphones. Assume that you want 95% confidence that your error is no more than 0.03.
Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. Click to view page 1 of the table. Click to view page 2 of the table. The area of the shaded region is (Round to four decimal places as needed.) 70 125 Q
Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. A thermometer is randomly selected and tested. Draw a sketch and find the temperature reading corresponding to P34, the 84th percentile. This is the temperature reading separating the bottom 84% from the top 16%. Click to view page 1 of the table. Click to view page 2 of the table. Which graph represents P ? Choose the correct graph below. 84 A. В. OC. D. Ay X The temperature for P84 is approximately (Round to two decimal places as needed.)
please solve : B, C, and D ch 9

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