2. When engaging in weight-control (fitness/fat burning) types of exercise, a person is expected to attain about 60% of their maximum heart rate. For 20-year-olds, this rate is approximately 120 bpm. A simple random sample of fifty 20-year-olds was taken, and the sample mean was found to be 107 bpm with a standard deviation of 45 bpm. Researchers wonder if this is evidence to conclude that the expected level is actually lower than 120 bpm. To determine this, we test the following hypotheses: Ho: µ = 120, На : и < 120 (a) Test the hypotheses using significance level 0.05. (b) Calculate a 99% confidence interval for the population mean weight control heart rate, µ, of 20- year-olds.

2. When engaging in weight-control (fitness/fat burning) types of exercise, a person is expected to attain about 60% of their maximum heart rate. For 20-year-olds, this rate is approximately 120 bpm. A simple random sample of fifty 20-year-olds was taken, and the sample mean was found to be 107 bpm with a standard deviation of 45 bpm. Researchers wonder if this is evidence to conclude that the expected level is actually lower than 120 bpm. To determine this, we test the following hypotheses: Ho: µ = 120, На : и < 120 (a) Test the hypotheses using significance level 0.05. (b) Calculate a 99% confidence interval for the population mean weight control heart rate, µ, of 20- year-olds.

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Description: When engaging in weight-control (fitness/fat burning) types of exercise, a person isexpected to attain about 60% of their maximum heart rate. For 20-year-olds, this rate isapproximately 120 bpm. A simple random sample of fifty 20-year-olds was taken

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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