Question 2The Medical Association of Trinidad and Tobago is interested in determining the impact of a newdrug on the cholesterol levels of women. Data was collected from 11 women diagnosed with highcholesterol. The data below shows the cholesterol levels before and after the drug wasadministered.Cholesterol Levels in mg/dLBefore 227 289 257 228 303 275 262 290 244 233 179After 134 240 230 186 265 242 242 281 240 212 215a. Calculate a 95% confidence interval for the mean cholestoral level (i) before drugand (ii) after drug.b. Test the hypothesis that the average cholesterol levels before and after administeringthe pill are equal for both mechanics are equal. Use the 1% level of significance.

Given that The Cholesterol level in mg/dL is given We have to find the confidence interval for…

Answered: Question 2 The Medical Association of…

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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1. Listed below is the moisture content (by percent) for random samples of different fruits and vegetables. Fruits 92 81 78 94 93 85 98 90 Vegetables 91 97 94 95 101 102 98 101 100 a. Compute descriptive statistics that will help you do exploratory analysis on moisture content (fruits and vegetables) and comment on your results. b. Construct a 95% confidence interval for the difference in the average of moisture content (fruits and vegetables) assuming the variances are significantly different. c. Is there sufficient evidence to suggest that the moisture content in Fruit is different from the moisture content in vegetables? Assuming the variance are not significantly different. Use a=0.05. Use P-value in making vour decision.
Listed below are the amounts of net worth (in millions of dollars) of the ten wealthiest celebrities in a country. Construct a 95% confidence interval. What does the result tell us about the population of all celebrities? Do the data appear to be from a normally distributed population as required? 178 162 161 241 206 158 .….. OB. We are confident that 95% of all celebrities have a net worth between $ million and $ million. (Round to one decimal place as needed.) example Get more help. 153 What is the confidence interval estimate of the population mean μ? $122.1 million
I need help with question 18 please
a. interpret the corresponding 95% confidence intervals for both Birth weight and Age. b. What is the predicted average SBP of an infant born with birth weight 8lbs (128oz) measured at 3 days old? c. Calculate the Pearson correlation between Age and Birth weight, and test if this correlation is significant at the 0.05 level. Does this answer surprise you, why or why not?
Mental health. The General Social Survey asked the question: “For how many days during the past30 days was your mental health, which includes stress, depression, and problems with emotions, not good?”Based on responses from 1,151 US residents, the survey reported a 95% confidence interval of 3.40 to 4.24days in 2010.(a) Interpret this interval in context of the data.(b) What does “95% confident” mean? Explain in the context of the application.(c) Suppose the researchers think a 99% confidence level would be more appropriate for this interval. Willthis new interval be smaller or wider than the 95% confidence interval?(d) If a new survey were to be done with 500 Americans, do you think the standard error of the estimatebe larger, smaller, or about the same.
To test the efficacy of a new cholesterol-lowering medication, 10 people are selected at random. Each has their LDL levels measured (shown below as Before), then take the medicine for 10 weeks, and then has their LDL levels measured again (After). Subject Before After 1 124 114 178 152 188 158 123 135 120 93 6 167 160 7 189 186 8 187 182 9. 171 136 10 139 120 Give a 93.3% confidence interval for HB - Hal the difference between LDL levels before and after taking the medication. Confidence Interval = N 3 4)
Listed below are the amounts of net worth in millions of the 10 wealthiest celebrities in a certain country. Construct a 90% confidence interval. What does the result tell us about the population of all the celebrities? Does the data appear to be from a normally distributed population as required? 247 208 196 173 166 161 148 148 143 143
The average income of a large sample of households is $63,000 and the s.d. is $7,000. Assume that the data is approximately bell-shaped. What percent of these households have incomes between $42,000 and $77,000? Don’t forget to properly justify your answer using the empirical rule.
To test the efficacy of a new cholesterol-lowering medication, 10 people are selected at random. Each has their LDL levels measured (shown below as Before), then take the medicine for 10 weeks, and then has their LDL levels measured again (After). Subject 1 2 3 4 5 6 Before After 188 202 110 77 184 176 133 97 171 151 131 92 183. 7 8 159 9 168 10 120 Give a 91.6% confidence interval for Ha-HA, the difference between LDL levels before and after taking the medication. Confidence interval= (0.61568,23.3843] 185 170 149 128
A newspaper infographic titled "Social Media Jeopardizing Your Job?" summarized data from a survey of 1,850 recruiters and human resource professionals. The infographic indicated that 52% of the people surveyed had reconsidered a job candidate based on his or her social media profile. Assume that the sample is representative of the population of recruiters and human resource professionals in the United States. Would a 90% confidence interval be wider or narrower than the 95% confidence interval from part (a)? widernarrower
Listed below are the amounts of net worth (in millions of dollars) of the ten wealthiest celebrities in a country. Construct a 95% confidence interval. What does the result tell us about the population of all celebrities? Do the data appear to be from a normally distributed population as required? 245 210 186 168 166 163 156 156 156 156
The morphine levels (percentage) of seven batches of seized heroin were determined, with the following results: 18.16, 16.94, 19.03, 23.99, 20.25, 21.80, 19.68, 23.92, 15.55, and 15.11. Construct the 90% confidence interval for the population mean of this data. What is the upper limit of the Confidence Interval? (Your answers to three decimal places, if you answer is 10.001% give 10.001 not 0.10001).

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