A researcher compares the effectiveness of two different instructional methods for teaching electronics. A sample of 138 students using Method 1 produces a testing average of 61. A sample of 156 students using Method 2 produces a testing average of 64.6. Assume that the population standard deviation for Method 1 is 18.53, while the population standard deviation for Method 2 is 13.43. Determine the 98 % confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2. Step 1 of 3: Find the point estimate for the true difference between the population means.

A researcher compares the effectiveness of two different instructional methods for teaching electronics. A sample of 138 students using Method 1 produces a testing average of 61. A sample of 156 students using Method 2 produces a testing average of 64.6. Assume that the population standard deviation for Method 1 is 18.53, while the population standard deviation for Method 2 is 13.43. Determine the 98 % confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2. Step 1 of 3: Find the point estimate for the true difference between the population means.

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

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A researcher compares the effectiveness of two different instructional methods for teaching electronics. A sample of 138 students using Method 1 produces a testing
average of 61. A sample of 156 students using Method 2 produces a testing average of 64.6. Assume that the population standard deviation for Method 1 is 18.53,
while the population standard deviation for Method 2 is 13.43. Determine the 98 % confidence interval for the true difference between testing averages for students
using Method 1 and students using Method 2.
Step 1 of 3: Find the point estimate for the true difference between the population means.

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