CAN SOME HELP ME FIGURE OUT THE ...NULL HYPOTHESIS,ALTERNATIVE HYPOTHESIS, THE TYPE OF TEST STATISTIC? The human resources department of an engineering company gives IQ tests to a randomly selected group of new hires every year. They claimed that the mean IQ score of new hires, μ1, from this year is greater than or equal to the mean IQ score of new hires, μ2, from last year. This year, 95 new hires took the test and scored an average of 113.1 points with a standard deviation of 13.5. Last year, 75 new hires took the IQ test and they scored an average of 116.9 points with a standard deviation of 14.8. Assume that the population standard deviation of the IQ scores from the current year and the last year can be estimated by the sample standard deviations, since the samples that are used to compute them are quite large. Is there enough evidence to reject the claim of the human resources department, at the 0.1level of significance? Perform a one-tailed test. Then fill in the table below. 1. THE NULL HYPOTHESIS: H0____
CAN SOME HELP ME FIGURE OUT THE ...NULL HYPOTHESIS,ALTERNATIVE HYPOTHESIS, THE TYPE OF TEST STATISTIC?
The human resources department of an engineering company gives IQ tests to a randomly selected group of new hires every year. They claimed that the mean IQ score of new hires, μ1, from this year is greater than or equal to the mean IQ score of new hires, μ2, from last year. This year, 95 new hires took the test and scored an average of 113.1 points with a standard deviation of 13.5. Last year, 75 new hires took the IQ test and they scored an average of 116.9 points with a standard deviation of 14.8. Assume that the population standard deviation of the IQ scores from the current year and the last year can be estimated by the sample standard deviations, since the samples that are used to compute them are quite large. Is there enough evidence to reject the claim of the human resources department, at the 0.1level of significance? Perform a one-tailed test. Then fill in the table below.
1. THE NULL HYPOTHESIS: H0____
2.THE ALTERNATIVE HYPOTHESIS : H1____
3.THE TYPE OF THE TEST STATISTIC: Z , t, , Chi square, F
4.THE VALUE OF THE TEST STATISTIC ( ROUND TO AT LEAST 3 DECMAL PLACES): ____
5. THE p-value ( FOUND TO AT LEAST 3 DECIMAL PLACES)._______
6. CAN WE REJECT THE CLAIM THAT THE MEAN IQ SCORE OF NEW HIRES FROM THE CURRENT YEAR IS GREATER THAN OR EQUAL TO THE MEAN IQ SCORE OF NEW HIRES FROM LAST YEAR? YES OR N0
Step by step
Solved in 2 steps with 5 images
