Two varieties of wheat are each planted in ten localities with differences in yield as follows: 2, 4, 2, 2, 3, 6, 2, 2, 4, 3. Test the hypothesis that the population means difference is zero, using 0.02 level of significance.

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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Concept explainers

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.

Question

Two varieties of wheat are each planted in ten localities with differences in yield as follows: 2, 4, 2, 2, 3, 6, 2, 2, 4, 3. Test the hypothesis that the population means difference is zero, using 0.02 level of significance.
The following data show initial training program performance and a job rating by a supervisor 12 months later for a sample 400 employees of a telephone company:

Training program perform
Job Rating
Below average
Average
Above average

Below average
63
49
9

Average
60
79
28

Above average
29
60
23

Is there any relationship between performance in the training program and job rating? Use the 1% level of significance

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