Question

Question 1 (1 point) ✓ Saved (Quesitons 1-5 are in one hypothesis testing using Teaching Methodology data). Click the data file name to download the data A teacher of statistics wants to know if a new teaching methodology that includes IT is efficient in terms of increased average score. He took a class with old methodology and a class with new methodology for samples and gave a same test. Open the file by clicking the file name above. Once you open the file and run Excel, you need not open it again. Just use the Excel output to answer question 1-5. For the new methodology to be efficient, the difference in average scores between two population means (old - new. H1-H2) should be negative. Consider that the class with old methodology is the first group. We do not know the population variances, but assume they are NOT equal. We do hypothesis testing to see if the new methodology is efficient. What is the alternative hypothesis (Ha)? a) 11-42 > 0 Ob) 21-420 O c) 41-42 so d) -1-420 O e) 41-42 = 0

Answer 1

The mill alternative hypothesis are: Hoi A M. - Hz M. - Maco The test statistic to perform the test is : t = 21 x 0 S? t S² ă, ¢ ore sample means Se ₂ ore sample sod. 8 maha are sample sizes. na #learnthesmarterway

Date // نر 73.56 75.71 12.572 .1 2.06 16 17 -2.15 9.-88 8:56. 0.50 2, 2 oy Si t. s? he i) 2 12 S ( ņ -1 4.88 (9.88)? 15 + 8.5652 +(856)? 16 30.6 22 31 390.0 6.5 4.6 P-value p(tzn < -0.5) 0:31 At dia 0.05 we Jail to reject the muu hys other's We I do not have enough evidence to support the the claim that methodology in teaching is efficient in terms of in treased awreage dcore. #learnthesmarter