I need solve this assignment of MTH-213

2 2 Employees in a company experience QUESTION 25 4 points Save Answer distractions (phone calls, emails, The rates of return on 7 natural unscheduled visits etc.) during their resources mutual funds are given office hours. Given that the below: distraction times are right skewed 18.23 16.74 15.74 16.87 17.23 15.55 19.54 with a mean of 95 minutes and a Suppose the rates are approximately standard deviation of 18 minutes. normal. What is the probability that for a (a) Compute the mean random sample of 36 employees and their mean distraction time is more the standard deviation than 89 minutes? rate O 0.6306 of return of natural resources mutual funds. Round your answer to three O 0.0478 decimal places 0.9772 (b) Calculate the lower confidence limite O 0.9996 and the upper confidence limite of QUESTION 23 3 points Save Answer the 99% confidence interval for u, the mean rate of return of natural Assume that the time spent by resources mutual funds. Round your students in extra curricular activities answer to three decimal places. per week is normally distributed with a standard deviation of 16.65 hours. QUESTION 27 3 points Save Answer A random sample of 36 students is Aisha wants to estimate the average selected. Find the standard error of study time per week for students in the sampling distribution of the MAT213 course. To accomplish that she randomly selects 11 such sample mean time? Round your students and records their weekly answer to two decimal places. study times in hours. Assume that the weekly study times are normally QUESTION 24 3 points Save Answer distributed. Which distribution should be used to construct the confidence Find the confidence level related interval? to the critical value za/2=1.605. O t-distribution with 11 degrees of freedom. O 88.4% O t-distribution with 10 degrees of O 96.5% freedom. O 89.2% Standard normal distribution. O Neither standard normal O 91.5% distribution nor t-distribution