Heart rates are determined before and 30 minutes after a Kettleball workout. It can be assumed that heartrates (bpm) are normally distributed. Use the data provided below to test to determine if average heartrates prior to the workout are significantly lower than 30 minutes after a Kettleball workout at the 0.02level of significance. Let μ₁ = mean before workout.before 62 60 68 65 76 73after 70 58 76 70 74 78Construct the appropriate confidence interval for the given level of significance.([three decimal accuracy][three decimal accuracy])

Heart rates are determined before and 30 minutes after a Kettleball workout. It can be assumed that…

Answered: Construct the appropriate confidence…

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 large family-held department store had the business objective of improving its response to complaints. The variable of interest was defined as the number of days between when the complaint was made and when it was resolved. Data were collected from 40 complaints that were made in the last year. Use the data to complete parts Construct a 99% confidence interval estimate for the population mean number of days between the receipt of a complaint and the resolution of the complaint. The 99% confidence interval estimate is from ___ days to ___ days Is the sample mean normal? Yes since n is > 30
Construct a confidence interval for a population mean. In order to estimate the number of 911 calls at the emergency operations center (EOC) in Pineville, volunteers randomly contacted 40 similar EOCs around the nation. They learned that the Mean is 42.0 calls per month and that the Standard Dev is 6.5 calls per month. Construct a 95% confidence interval of the mean calls at the EOCs per month.
The St. Lucie County Economic Development Board needs to estimate the proportion of all county residents who have earned at least a bachelor's degree. A random sample conducted by the St. Lucie County Economic Development Board found that 19.8% of all county residents held at least a bachelor's degree. Find three different confidence intervals one with sample size 173, one with sample size 420, and one with sample size 842. Assume that 19.8% of the county residents in each sample have earned at least a bachelor's degree. Notice how the sample size affects the margin of error and the width of the interval . Report confidence interval solutions using interval notationReport all solutions in percent form, rounded to two decimal places , if necessary . When n = 173 , the margin of error for a 98% confidence interval is given by When n=173,a.988 confidence interval is given by When n = 420 , the margin of error for a 98confidence interval is given by When n = 420 , a 98% confidence interval…
The drug Clarinex is used to treat symptoms from allergies. In a clinical trial of this drug, 2.1% of the 1655 treated subjects experienced fatigue. Among the 1652 subjects given placebos, 1.2% experienced fatigue. Use a 0.05 significance level to test the claim that the incidence of fatigue is greater among those who use Calrinex. How to construct an appropriate confidence interval?
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