##### Two stats Questions Really need help.

 Statistics Tutor: None Selected Time limit: 1 Day

Jun 23rd, 2015

Thank you for the opportunity to help you with your question!

since the data uses two different populations we use t-test  assuming that the population standard deviation are equal and unknown.

The excel results are as shown below:

 t-Test: Two-Sample Assuming Equal Variances Column1 Column2 method 1 method2 Mean 17 21.8 Variance 21.5 43.2 Observations 5 5 Pooled Variance 32.35 Hypothesized Mean Difference 0 df 8 t Stat -1.3343633 P(T<=t) one-tail 0.10940783 t Critical one-tail 1.85954804 P(T<=t) two-tail 0.21881567 t Critical two-tail 2.30600414
From the results the test statistic is negative which indicates that method 1 results are less compared to method 2 results. Since the test is one-tailed we consider P-value at one-tail. The P-value is more compared to a 0.05 level of significance. Therefore, we do not reject the null hypothesis hence we cannot conclude that the mean time is significantly after training with method 1 than training with method 2.

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Jun 23rd, 2015

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Jun 23rd, 2015
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Jun 23rd, 2015
Dec 4th, 2016
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