22. The following are fasting blood glucose level (mg/di) of 10 children: thevalue of mean (x) is Class interval FBS (mg/dl) FBS (mg/dl) Frequency (f)56-60 58 2 61-65 63 2 66-70 68 3 71-75 73 2 76-80 78 1Oa) 63.25Ob) 65Oc) 67Od) 66

We have given that I want to find mean. Mean = sum of all observations/total number of…

Answered: 22. The following are fasting blood…

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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In order to estimate the difference between the yearly incomes of marketing managers in the East and West of the United States, the following information was gathered: East West n1= 40 I1=72 (in $1000s) 2= 78 (in $1000s) 51 =6 (in $1000s) n2= 45 s2 = 8 (in $1000s) Develop an interval estimate for the difference between the average yearly incomes of the marketing managers in the East and West. Use a = .05. At 95% confidence, use the p-value approach and test to determine if the average a. b. yearly income of marketing managers in the East is significantly different from the West
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How do you graph grade curves in StatCruch (finding two bounds within grades; ex. D, C, B)??? In other words, finding two cut off scores? Reference: The mean and standard deviation of last semester’s Test 1 scores are 76.5 and 14.8 respectively. Imagine we want to define letter grades using a Normal distribution (assuming this is appropriate). One possible grade distribution could be that the lowest 10% of students earn F’s, the next 15% earn D’s, the next 50% earn C’s, the next 15% earn B’s, and the rest of the students earn A’s. Using the Normal distribution, calculate the Test 1 scores that would separate these letter grades. Your answer needs to include five Normal graphs from StatCrunch where the shaded area on each graph shows the range of scores needed to earn the specific letter grade. Hint: The graphs for A and F will only have one value as a cutoff score whereas the graphs for a B, C, and D will have two cutoff scores. Which students are happy about their curved grades? Why?…

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22. The following are fasting blood glucose level (mg/di) of 10 children: the value of mean (x) is Class interval FBS (mg/dl) FBS (mg/dl) Frequency (f) 56-60 58 2 61-65 63 2 66-70 68 3 71-75 73 2 76-80 78 1 Oa) 63.25 Ob) 65 Oc) 67 d) 66