To test the efficacy of a new cholesterol-lowering medication, 10 people are selected at random. Each has their LDL levels measured (shown below asBefore), then take the medicine for 10 weeks, and then has their LDL levels measured again (After).Subject123456BeforeAfter18820211077184 1761339717115113192183.78159916810120Give 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]185170149128

Given data: Subject Before After 1 188 202 2 110 77 3 184 176 4 133 97 5 171 151 6…

Answered: To test the efficacy of a new…

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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A new postsurgical treatment is being compared with a standard treatment. Seven subjects receive the new treatment while seven others (the controls) receive the standard treatment. The recovery times in days are as follows: Treatment X 12 13 15 19 20 21 27 Control Y 18 23 24 30 32 35 40 calculate a 95% confidence interval for each set of data. Determine the error in the sample mean
QUESTION 5 The health department is estimating the percentage of smokers among adults aged between 18-22. A random sample of 50 students was used and 16 are reported as smokers. Find the corresponding critical value for calculating 97.5% confidence interval. Round your answer to three decimal places.
Question 2 The Medical Association of Trinidad and Tobago is interested in determining the impact of a new drug on the cholesterol levels of women. Data was collected from 11 women diagnosed with high cholesterol. The data below shows the cholesterol levels before and after the drug was administered. Cholesterol Levels in mg/dL Before 227 289 257 228 303 275 262 290 244 233 179 After 134 240 230 186 265 242 242 281 240 212 215 a. Calculate a 95% confidence interval for the mean cholestoral level (i) before drug and (ii) after drug. b. Test the hypothesis that the average cholesterol levels before and after administering the pill are equal for both mechanics are equal. Use the 1% level of significance.
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
For the data set below, calculate r, r2, and a 95 percent confidence interval in r units. Then write a one- to two sentence conclusion statement that includes whether the null hypothesis was rejected or not and whether there is a strong /weak/no relationship. Assume a two tailed hypothesis and α = .05. Case 1 Case 2 Case 3 Case 4 Case 5 Case 6 X 1.05 1.15 1.30 2.00 1.75 1.00 Y 2 2 3 4 5 2
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 1 143 130 2 158 140 174 188 4 166 166 166 131 157 118 7 132 95 8 136 124 9 129 121 10 159 134 Give a 97% confidence interval for uB - u l, the difference between LDL levels before and after taking the medication. Confidence Interval =
2 different treatments were used to speed the relief time (in minutes) of migraines. 8 subjects received each treatment. The recovery times are listed below. Treatment 1: 20 19 29 25 34 32 39 38 Treatment 2: 18 18 16 17 29 28 21 37 Construct a 90% confidence interval for the difference in the relief time between the 2 treatments.
Use the given set of points to construct a 95% confidence interval for β1. No need to interpret the results. x 9 6 5 9 6 12 17 11 y 25 18 15 21 21 28 30 24
The following data represent a random sample of five measurements from a normally distributed population: 7,4,2,5,7 a. Find 90% confidence interval for u. b. Find a 99% confidence interval for u.

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