A researcher compares the effectiveness of two different instructional methods for teaching physiology. A sample of 189 students using Method 1 produces a testing average of 71.9. A sample of 141 students using Method 2 produces a testing average of 78.3. Assume the standard deviation is known to be 11.07 for Method 1 and 11.9 for Method 2. Determine the 98 % confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2. Step 2 of 2: Construct the 98% confidence interval. Round your answers to one decimal place. Answer How to enter your answer (opens in new window) Lower endpoint: Upper endpoint: Tables Keypad Keyboard Shortcuts Previous Step Answers

A researcher compares the effectiveness of two different instructional methods for teaching physiology. A sample of 189 students using Method 1 produces a testing average of 71.9. A sample of 141 students using Method 2 produces a testing average of 78.3. Assume the standard deviation is known to be 11.07 for Method 1 and 11.9 for Method 2. Determine the 98 % confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2. Step 2 of 2: Construct the 98% confidence interval. Round your answers to one decimal place. Answer How to enter your answer (opens in new window) Lower endpoint: Upper endpoint: Tables Keypad Keyboard Shortcuts Previous Step Answers

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 13PPS

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