A company is producing and marketing new reading activities for elementary school children that it believes will improve reading comprehension scores. A researcher randomly assigns third graders to an eight-week program in which some will use these activities and others will experience traditional teaching methods. At the end of the experiment, both groups take a reading comprehension exam. Do the results attached below suggest that the new activities are better? Test an appropriate hypothesis and state your conclusion. (Assume a significance level of a = 0.05.) E Click the icon to view the exam results. Test the null hypothesis at a = 0.05 using the two-sample t-test. Let the new activities be sample 1 and the control group sample 2. Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: H1 - H2 = 0 O B. Ho: H1 -42 = 0 HẠ: H1 - H2 #0 HA: H1 -H2 >0 OC. Ho: H1-H2 #0 HA: H1- H2 =0 O D. Ho: H1 -H2 =0 HA: H1 - H2 <0

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Chapter1: Starting With Matlab
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Transcribed Image Text:Exam Results New Activities Control 27 55 12 43 32 56 17 43 44 58 21 43 44 58 23 44 44 59 27 48 45 61 33 51 49 62 39 54 51 69 39 56 55 71 42 62 64 86 43 43 Print Done
A company is producing and marketing new reading activities for elementary school children that it believes will improve reading comprehension scores. A researcher randomly assigns third graders to an eight-week program in
which some will use these activities and others will experience traditional teaching methods. At the end of the experiment, both groups take a reading comprehension exam. Do the results attached below suggest that the new
activities are better? Test an appropriate hypothesis and state your conclusion. (Assume a significance level of a = 0.05.)
E Click the icon to view the exam results.
Test the null hypothesis at a = 0.05 using the two-sample t-test. Let the new activities be sample 1 and the control group sample 2. Identify the null and alternative hypotheses. Choose the correct answer below.
O A. Ho: H1 - H2 = 0
O B. Ho: H1 -42 = 0
HA: H1 -H2 >0
OC. Ho: H1-H2 #0
HA: H1- H2 =0
O D. Ho: H1 - H2 =0
HA: H1 - H2 <0
Transcribed Image Text:A company is producing and marketing new reading activities for elementary school children that it believes will improve reading comprehension scores. A researcher randomly assigns third graders to an eight-week program in which some will use these activities and others will experience traditional teaching methods. At the end of the experiment, both groups take a reading comprehension exam. Do the results attached below suggest that the new activities are better? Test an appropriate hypothesis and state your conclusion. (Assume a significance level of a = 0.05.) E Click the icon to view the exam results. Test the null hypothesis at a = 0.05 using the two-sample t-test. Let the new activities be sample 1 and the control group sample 2. Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: H1 - H2 = 0 O B. Ho: H1 -42 = 0 HA: H1 -H2 >0 OC. Ho: H1-H2 #0 HA: H1- H2 =0 O D. Ho: H1 - H2 =0 HA: H1 - H2 <0
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