One of the most popular ways to estimate an unknown parameter is the confidence interval. Instead of just using a point estimate it gives an interval estimate. This gives more information about the unknown parameter. In this assignment we will examine confidence interval. Using a Word document show the relevant calculations as well as the answers/solution. Copy the screenshots of the R output and paste them into the Word document. Your screenshot must include the current date using the function Sys.Date(). Submit the Word file for grading. Requirements: In Depth Download the dataset JNJ.csv from the course website. Using R compute the sample mean of closing price of Johnson and Johnsons (JNJ) daily stock prices. Using R compute the standard deviation. Also compute the 90% 95% and 99% confidence intervals for the true mean closing JNJ stock price. Based on 3 discuss the pattern you see from these three confidence intervals and explain why such a pattern exists. What is the advantage(s) and disadvantage(s) of increasing the confidence levels? Explain. Interpret the confidence intervals youve calculated from part 3. Download the dataset JNJ.csv from the course website.Using R compute the sample mean of closing price of Johnson and Johnsons (JNJ) daily stock prices.Using R compute the standard deviation. Also compute the 90% 95% and 99% confidence intervals for the true mean closing JNJ stock price.Based on 3 discuss the pattern you see from these three confidence intervals and explain why such a pattern exists.What is the advantage(s) and disadvantage(s) of increasing the confidence levels? Explain.Interpret the confidence intervals youve calculated from part 3. ‘
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