Suppose that a randomized comparative experiment studies the effect of diet on blood pressure. Researchers divide 54 healthywhite males at random into two groups. One group receives a calcium supplement, and the other group receives a placebo. At thebeginning of the study, the researchers measure several variables on the subjects. The average seated systolic blood pressure ofthe 27 members of the placebo group is reported to be = 114.9, with a standard deviation of s= 9.3.Give a 95% confidence interval for the mean systolic blood pressure of the population from which the subjects were recruited.Report your interval values to one decimal place.95% confidence interval:The recipe you used to calculate the 95% confidence interval requires an important assumption about the 27 men whoprovided the data. What is this assumption?The number of men in the in the placebo group are randomly chosen from the population of healthy white males.The subjects in the placebo group are a simple random sample (SRS) of healthy white males.The number of men in the placebo group are reasonably small enough sample to use the formula for a confidence

Answered: Image /qna-images/answer/8124d2d4-f6d6-4126-a906-de8afd80ac7a.jpg

Answered: Suppose that a randomized comparative…

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 researcher is interested in examining the difference in the average egg incubation temperature of two lizards in North Carolina, the native green anoles versus the invasive brown anoles. To investigate this, she takes two random samples from both of the lizard populations and calculates the average egg incubation temperature, standard deviation, and sample size for each of the two samples. The average incubation temperature for the 25 sampled brown anoles is 83.2 degrees Fahrenheit, with a sample standard deviation of 20.2 degrees Fahrenheit. The average incubation temperature the 28 samples green anoles is 80.1 degrees Fahrenheit, with a sample standard deviation of 17.4 degrees Fahrenheit. She has also determined that the two samples do not exhibit strong skewness and appear approximately normal. Determine the standard error for the 99% confidence interval for the difference between the true mean incubation temperatures for the two different anole species, μ1−μ2. Give your…
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