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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The students in the HS3333 course recently took an exam and these were the scores: 76, 88, 67, 80, 44, 65, 50, 98, 55, 45, 23, 44, 65, 78, 66, 56, 89, 76,87,29 What score is the 75% percentile? (Show work.) What score is the 90% percentile? (Show work.) A score of 55 is what percentile? (Show work.)
Suppose that three drugs used to reduce cholesterol are compared in a randomized experiment in which three people use each drug for a month. The data for the reductions in cholesterol level for the N = 9 participants follow. Drug 1 Drug 2 Drug 3 6 10 4 14 12 2 9 6 Calculate the F-statistic for comparing the mean cholesterol reductions for the three drugs. What is the value of F? (report to 2 decimal places) What are the degrees of freedom for this statistic - Between df? ,Within df?
5. Oxygen demand is a term blologists use to describe the axygen needed by fish and other aquatic organisms for survval. The Environmental Protection Agency conducted a study of a wetland area in Marin County, Californla. In this wetland environment, the mean oxygen demand was u=9.9 mg/L, and a= 1.7 mg/L. (Reference: EPA Report 832-R- 93- 005). Let x be a random varlable that represents oxygen demand in this wetland environment. Assume x has a probability distribution that is approximately normal. a. An oxygen demand below 8 mg/L Indicates that some organisms In the wetland environment may be dying. What is the probability that the oxygen demand will fall below 8 mg/L? b. A high oxygen demand can also indicate trouble. An oxygen demand above 12 mg/L may indicate an overabundance of organisms that endanger some types of plant life. What is the probability that the oxygen demand will exceed 12 mg/L?
5. The table below shows the distribution of marks scored by 500 students in their oral test in Music. Compute the 3 quartiles. Number of Students Scores (x) 91 100 81 – 90 17 71-80 63 61- 70 65 51 - 60 86 41- 50 112 31-40 68 21-30 55 11-20 17 1-10 8.
20
Q\ For the next data: Class limit 13-19 20-26 27-33 34-40 41-47 48-54 55-61 62-68 Frequency 8 13 23 35 42 36 20 7 Calculate: 1- Arithmetic mean (X), Mode (X). 2- Standard Deviation (S), Coefficient of Variation (C,).
6. Interval estimation when o is unknown (the data “Alcohol" is provided) Consumption of alcoholic beverages by young women of drinking age has been increas- ing in the United Kingdom, the United States, and Europe (The Wall Street Journal, Feb- ruary 15, 2006). Data (annual consumption in liters) consistent with the findings reported in The Wall Street Journal article are shown for a sample of 20 European young women. 266 82 199 174 97 170 222 115 130 169 164 102 113 171 93 93 110 130 Assuming the population is roughly symmetric, construct a 95% confidence interval for the mean annual consumption of alcoholic beverages by European young women.

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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