udents in group 2 had a mean score of 18 with a standard deviation etermine the 90% confidence interval for the difference in scores, H1

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Two researchers conducted a study in which two groups of students were asked to answer 42 trivia questions from a board game. The students in group 1 were asked to spend 5 minutes thinking about what it would mean to be a
professor, while the students in group 2 were asked to think about soccer hooligans. These pretest thoughts are a form of priming The 200 students in group 1 had a mean score of 24.8 with a standard deviation of 4 8 while the
200 students in group 2 had a mean score of 18 with a standard deviation of 3.1. Complete parts (a) and (b) below.
(a) Determine the 90% confidence interval for the difference in scores, u- l2. Interpret the interval.
The lower bound is
The upper bound is
(Round to three decimal places as needed.)
Interpret the interval. Choose the correct answer below.
O A. There is a 90% probability that the difference of the means is in the interval.
O B. The researchers are 90% confident that the difference of the means is in the interval.
OC. The researchers are 90% confident that the difference between randomly selected individuals will be in the interval.
O D. There is a 90% probability that the difference between randomly selected individuals will be in the interval.
(b) What does this say about priming?
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Transcribed Image Text:Two researchers conducted a study in which two groups of students were asked to answer 42 trivia questions from a board game. The students in group 1 were asked to spend 5 minutes thinking about what it would mean to be a professor, while the students in group 2 were asked to think about soccer hooligans. These pretest thoughts are a form of priming The 200 students in group 1 had a mean score of 24.8 with a standard deviation of 4 8 while the 200 students in group 2 had a mean score of 18 with a standard deviation of 3.1. Complete parts (a) and (b) below. (a) Determine the 90% confidence interval for the difference in scores, u- l2. Interpret the interval. The lower bound is The upper bound is (Round to three decimal places as needed.) Interpret the interval. Choose the correct answer below. O A. There is a 90% probability that the difference of the means is in the interval. O B. The researchers are 90% confident that the difference of the means is in the interval. OC. The researchers are 90% confident that the difference between randomly selected individuals will be in the interval. O D. There is a 90% probability that the difference between randomly selected individuals will be in the interval. (b) What does this say about priming? Next Sign out e us O 10:39 @ 2# % & backspace 2 4. 7 8 e y u d f j k
brotessor, WHIle the students In group 2 were asked to think about soccer hooligans. These pretest thoughts are a form of priming. The 200 students in group 1 had a me
dard game. The students in group 1 were asked to
200 students in group 2 had a mean score of 18 with a standard deviation of 3.1. Complete parts (a) and (b) below.
Interpret the interval. Choose the correct answer below.
O A. There is a 90% probability that the difference of the means is in the interval.
O B. The researchers are 90% confident that the difference of the means is in the interval.
O C. The researchers are 90% confident that the difference between randomly selected individuals will be in the interval.
O D. There is a 90% probability that the difference between randomly selected individuals will be in the interval.
(b) What does this say about priming?
O A. Since the 90% confidence interval does not contain zero, the results suggest that priming does have an effect on scores.
O B. Since the 90% confidence interval contains zero, the results suggest that priming does not have an effect on scores.
O C. Since the 90% confidence interval contains zero, the results suggest that priming does have an effect on scores.
ip
esc
Transcribed Image Text:brotessor, WHIle the students In group 2 were asked to think about soccer hooligans. These pretest thoughts are a form of priming. The 200 students in group 1 had a me dard game. The students in group 1 were asked to 200 students in group 2 had a mean score of 18 with a standard deviation of 3.1. Complete parts (a) and (b) below. Interpret the interval. Choose the correct answer below. O A. There is a 90% probability that the difference of the means is in the interval. O B. The researchers are 90% confident that the difference of the means is in the interval. O C. The researchers are 90% confident that the difference between randomly selected individuals will be in the interval. O D. There is a 90% probability that the difference between randomly selected individuals will be in the interval. (b) What does this say about priming? O A. Since the 90% confidence interval does not contain zero, the results suggest that priming does have an effect on scores. O B. Since the 90% confidence interval contains zero, the results suggest that priming does not have an effect on scores. O C. Since the 90% confidence interval contains zero, the results suggest that priming does have an effect on scores. ip esc
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