The mean household income in the US in 2019 was about $89,930 and the standarddeviation was about $85,000. (The median income was $59,039.)a) If a Normal model is used for these incomes, what would be the household income of thetop 7%?b) How confident can you be in the answer in part a?a) The top 7% would have incomes greater than $(Round to the nearest dollar as needed.)

Let X denotes household in the US X~N(μ=89930, σ=$85000)We have to find a. P(X>x)=0.07 a) If a…

Answered: The mean household income in the US in…

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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An Excel assignment counts for 0-10 points. The scores in a class of 12 students are recorded as follows:1 5 5 6 7 7 8 8 8 9 10 10 What is the deviation of the score 10 from the mean in 13a (recall that this involves a subtraction of the mean from the particular score)? I think I got answer but want to check.
2. The mean of a statistics examination is 77.0. a. If your score is 85, would you prefer the standard deviation to be large or small for purposes of getting a better grade? Why? b. If your score is 69, would you prefer the standard deviation to be large or small? Why?
Students in a class were given a quiz. These were their scores: 7 8 10 9 8 8 4 6 7 8 9 8 6 8 5 What is the standard deviation for these students' quiz scores?
Use the information below to answer question. Data measured on n=3,539 participants who attended the seventh examination of the O↵spring in the Framing- ham Heart Study showed that the mean Total Serum Cholesterol for men is 192.4 with sample size 1,544, whereas the mean Total Serum Cholesterol for women is 207.1 with sample size 1,766. The population standard deviation for men is 35.2 and 36.7 for women. We now wish to assess whether there is a statistically significant di↵er- ence in mean Total Serum Cholesterol between men and women using a 5% level of significance. Given that the table or the critical value is -1.96, do we accept or reject the claim that the mean weight is 191 and why?........................................................................... ...............................................................................................
Mr. Dela Cruz works for a New York theatrical agency whose employees had an average income last year of $28,000 with a standard deviation of $3,000. How much did Mr. dela Cruz earn last year if his z score is -0.8?O $25,600O -$30,400O $11,400O $45,600O $30,400
Which statement below is correct? a. Standard deviation should be used when calculating z for a single score, while standard error should be used when calculating z for a sample mean. b. When calculating z for a single score or for a sample mean, the standard error should be used. c. Standard error should be used when calculating z for a single score, while standard deviation should be used when calculating z for a sample mean. d. When calculating z for a single score or for a sample mean, the standard deviation should be used.
What is the population standard deviation using the following formula
The quantitative subtest of the Graduate Record Exam (GRE) has a mean of 500 and a standard deviation of 100. What GRE score would correspond to a z score of 1.50? a. 600 b. 500 c. 340 d. 650
A successful basketball player has a height of 6 feet 11 inches, or 211 cm. Based on statistics from a data set, his height converts to the z score of 5.17. How many standard deviations is his height above the mean?
Use the following information for the question. The average travel time to work for a person living and working in Kokomo, Indiana is 17 minutes. Suppose the standard deviation of travel time to work is 4.5 minutes and the distribution of travel time is approximately normally distributed.Which of these statements is asking for a measurement (i. e. is an inverse normal question)? A.What percentage of people living and working in Kokomo have a travel time to work that is between thirteen and fifteen minutes? B.If 15% of people living and working in Kokomo have travel time to work that is below a certain number of minutes, how many minutes would that be?
please answer all with complete solution use only calculator not excel
Given a scenario where n=100 and p=0.8, find the mean.

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