Month: October 2020

The data is from a study whose research hypothesis was: “There will be a difference between boys and girls in the number of times they raise their hand in class.” For the purposes of this study, boys were coded as 2 on gender; girls were coded as 1. I wrote some…

First Question:The director of manufacturing at a cookies needs to determine whether a new machine is production a particular type of cookies according to the manufacturer's specifications, which indicate that cookies should have a mean of 70 and standard deviation of 3.5 pounds. A sample pf 49 of cookies reveals…

Part 1. Confidence Interval Estimation Questions when the mean is known Equation 1: Pulled from assignment page 1. x̄ = 85 and σ = 8, and n = 64, set up a 95% confidence interval estimate of the population mean μ.  Using the given equation and plugging in for the appropriate values, the following…

For this week's blog post I make an attempt to answer questions my professor gave me regarding sampling and confidence interval estimation. For the R code I used, you can find it here or use the link at the end of the article. Question 1 A publishing company has just…