The population standard deviation of the thickness of windshields of Toyota cars was found to be 0.25mm. A random sample of 3 windshields had a sample mean of 4mm. a. What is the point estimate of the population mean? mm b. Which statistic should we use the estimate the confidence interval? z c. Develop the 95% confidence interval of the population mean. from Lower Limit. to Upper Limit: d. Ahmed, claims the average in the population to be 3.5mm, would you agree to the claim? Agree/Disagree e. Write down your explanation for Question B and Question D in your megastat output and upload the fle