Please answer all parts thanks,
1- The test statistic is t =
2- P-value =
3- What conclusions can be drawn about grade inflation over
this time period?
Please Answer All Parts Thanks 1 The Test Statistic Is T 2 P Value 3 What Conclusions Can Be Drawn About Grade I 1 (77.19 KiB) Viewed 91 times
A university is concerned about the presence of grade inflation, which is defined as an increase in the average GPA of the institution's students over time without a comparable increase in academic standards. To investigate this phenomenon, the average GPA for the student body was recorded over the past 11 years, as shown to the right. Complete parts a through c. Year GPA 1 3.09 2 2.88 3 2.94 4 2.83 5 3.00 6 3.06 Year GPA 7 3.09 8 2.99 9 3.20 10 3.18 11 3.12 Choose the correct scatter plot below. OA B OC OD. a 3.5- 3.5 3.5 3.54 000 a g 10 3- Š 3- 0 00 2.5 25 25- 0 25- D 12 12 12 6 Year 6 Year 6 YAA Vaar b. Using a=0.10, determine if the slope for the regression equation is statistically significant. Determine the null and alternative hypotheses. HO: B = 0 HEB 0 The test statistic is t= 2.63 (Round to two decimal places as needed.) Enter your answer in the answer box and then click Check Answer. 7 3 parts remaining Clear All Check Answer ►
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