The home run percentage is the number of home runs per 100 times at bat. A random sample of 43 professional baseball players gave the following data for home run percentages.1.6 2.41.2 6.6 2.3 0.01.82.5 6.5 1.B2.7 2.0 1.9 1.3 2.7 1.7 1.3 2.1 2.8 1.43.8 2.13.4 1.3 1.5 2.9 2.60.0 4.1 2.91.9 2.4 0.0 1.8 3.1 3.8 3.21.6 4.2 0.01.2 1.8 2.4A USE SALT(a) Use a calculator with mean and standard deviation keys to find x and s. (Round your answers to four decimal places.)(b) Compute a 90% confidence interval for the population mean ju of home run percentages for all professional baseball players, Hint: If you use the Student's t distribution table, be sure to use the closest d.f. that is smaller. (Round your answers to two decimalplaces.)lower limitupper limit(c) Compute a 99% confidence interval for the population mean u of home run percentages for all professional baseball players. (Round your answers to two decimal places.)lower limitupper limit

Solution: n = 43 Sample size ∑x=98.6 The sample mean x can be determine as x=∑xn

1.6 2.4 1.2 6.6 2.3 0.0 1.8 2.5 6.5 1.8 2.7 2.0 1.9 1.3 2.7 1.7 1.3 2.1 2.8 1.4 3.8 2.1 3.4 1.3 1.5 2.9 2.6 0.0 4.1 2.9 1.9 2.4 0.0 1.8 3.1 3.8 3.2 1.6 4.2 0.0 1.2 1.8 2.4 A USE SALT (a) Use a calculator with mean and standard deviation keys to find x and s. (Round your answers to four decimal places.) (b) Compute a 90% confidence interval for the population mean u of home run percentages for all professional baseball players, Hint: If you use the Student's r distribution table, be sure to use the closest d.f. that is smaler. (Round your answers to two decim places.) lower limit upper limit (c) Compute a 99% confidence interval for the population mean u of home run percentages for all professional baseball players. (Round your answers to two decimal places.) lower limit upper limit

1.6 2.4 1.2 6.6 2.3 0.0 1.8 2.5 6.5 1.8 2.7 2.0 1.9 1.3 2.7 1.7 1.3 2.1 2.8 1.4 3.8 2.1 3.4 1.3 1.5 2.9 2.6 0.0 4.1 2.9 1.9 2.4 0.0 1.8 3.1 3.8 3.2 1.6 4.2 0.0 1.2 1.8 2.4 A USE SALT (a) Use a calculator with mean and standard deviation keys to find x and s. (Round your answers to four decimal places.) (b) Compute a 90% confidence interval for the population mean u of home run percentages for all professional baseball players, Hint: If you use the Student's r distribution table, be sure to use the closest d.f. that is smaler. (Round your answers to two decim places.) lower limit upper limit (c) Compute a 99% confidence interval for the population mean u of home run percentages for all professional baseball players. (Round your answers to two decimal places.) lower limit upper limit

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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