- Refer To The Accompanying Data Display That Results From A Sample Of Airport Data Speeds In Mbps Complete Parts A Thr 1 (12.48 KiB) Viewed 74 times
- Refer To The Accompanying Data Display That Results From A Sample Of Airport Data Speeds In Mbps Complete Parts A Thr 2 (25.22 KiB) Viewed 74 times
- Refer To The Accompanying Data Display That Results From A Sample Of Airport Data Speeds In Mbps Complete Parts A Thr 3 (28.85 KiB) Viewed 74 times
- Refer To The Accompanying Data Display That Results From A Sample Of Airport Data Speeds In Mbps Complete Parts A Thr 4 (21.22 KiB) Viewed 74 times
- Refer To The Accompanying Data Display That Results From A Sample Of Airport Data Speeds In Mbps Complete Parts A Thr 5 (19.73 KiB) Viewed 74 times
Homework: 7.2 HW - Estimating a Population Mean Question 3, 7.2.11-T Part 1 of 2 HW Score: 16.67%, 1 of 6 points O Points: 0 of 1 Construct the 90% confidence interval estimate of the mean wake time for a population with the treatment. minu[ n<μ<min (Round to one decimal place as needed.) Save A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 14 subjects had a mean wake time of 102.0 min. After treatment, the 14 subjects had a mean wake time of 98.4 min and a standard deviation of 21.9 min. Assume that the 14 sample values appear to be from a normally distributed population and construct a 90% confidence interval estimate of the mean wake time for a population with drug treatments. What does the result suggest about the mean wake time of 102.0 min before the treatment? Does the drug appear to be effective?
Homework: 7.2 HW - Estimating a Population Mean Click here to view at distribution table. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table Question 4, 7.2.12 Part 1 of 2 What is the confidence interval estimate of the population mean µ? mg/dL <u<mg/dL (Round to two decimal places as needed.) In a test of the effectiveness of garlic for lowering cholesterol, 48 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes (before-after) in their levels of LDL cholesterol (in mg/dL) have a mean of 4.1 and a standard deviation of 18.2. Construct a 95% confidence interval estimate of the mean net change in LDL cholesterol after the garlic treatment. What does the confidence interval suggest about the effectiveness of garlic in reducing LDL cholesterol? HW Score: 16.67%, 1 of 6 points O Points: 0 of 1 SID Save
Homework: 7.2 HW - Estimating a Population Mean Question 5, 7.2.21-T Part 1 of 2 The required sample size is. (Round up to the nearest integer.) HW Score: 16.67%, 1 of 6 points Points: 0 of 1 Save An IQ test is designed so that the mean is 100 and the standard deviation is 25 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 90% confidence that the sample mean is within 6 IQ points of the true mean. Assume that a = 25 and determine the required sample size using technology. Then determine if this is a reasonable sample size for a real world calculation,
Homework: 7.2 HW - Estimating a Population Mean a. Find the sample size using the range rule of thumb to estimate o Question 6, 7.2.25-T Part 1 of 3 (Round up to the nearest whole number as needed.) The pulse rates of 170 randomly selected adult males vary from a low of 37 bpm to a high of 113 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want 95% confidence that the sample mean is within 3 bpm of the population mean. Complete parts (a) through (c) below. HW Score: 16.67%, 1 of 6 points O Points: 0 of 1 CIP Save