Entries by Grace Wahito

Why is a 99% confidence interval wider than a 95%? ATTACHMENT PREVIEW Download attachment

February 27, 2020 in /by

This question was created from MATH221_W6_Lab_Excel_JMcDaniel https://www.coursehero.com/file/15034924/MATH221-W6-Lab-Excel-JMcDaniel/ Why is a 99% confidence interval wider than a 95%? ATTACHMENT PREVIEW Download attachment 15034924-221929.jpeg Cnn‘tpsre the 95% and 99% cnnfldence intervals for the hnurs nf sleep a student 1gets. Explain the difference between these intervals and why.T this difference occurs. {5 points]   Looking for a Similar Assignment? Order […]

 

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The company’s cleaning service states that they spend more than 46 minutes

February 27, 2020 in /by

The company’s cleaning service states that they spend more than 46 minutes each time the cleaning service is there. The company times the length of 37 randomly selected cleaning visits and finds the average is 47.6 minutes. Assuming a population standard deviation of 5.2 minutes, can the company support the cleaning service’s claim at α=0.10? […]

 

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Type I and type II errors occur because of what issue within the hypothesis testing process?

February 27, 2020 in /by

Type I and type II errors occur because of what issue within the hypothesis testing process? />The population is not a representative subset of the sampleThe sample taken is not representative of the populationThe sample mean is different than the population meanThe math calculations were done incorrectlyA researcher wants to determine if extra homework problems […]

 

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If the coefficient of determination is 0.738, what percentage of the data about the regression line is unexplained?

February 27, 2020 in /by

If the coefficient of determination is 0.738, what percentage of the data about the regression line is unexplained?   Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code “Newclient”

 

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