Loftus and Palmer study (1974) demonstrated the influence of language on eyewitness memory. Participants watched a film of a car accident and were asked questions about what they saw. One group was asked “About how fast the cars were going when they smashed into each other?” Another group was asked the same question, except the verb was changed to “hit” instead of “smashed into”. The ‘smasher into” group reported significantly higher estimates of speed than the hit group. Suppose a researcher repeats this study with two samples of college students and obtains the following results: Estimated Speed Smashed into hit n = 16 n = 16 M = 40 M = 34 SS = 510 SS = 414 Use a one-tailed test with α = .01. based on this question Use the data to make a 99% confidence interval estimate of the mean difference in estimate speed between the “smashed into” group and the “hit” group The lower limit of the confidence interval is= I got 1.17 The upper limit of the confidence interval is= I got 10.82 If it is a decimal number with two or more than two places, leave only two decimal places after the decimal point. Please do not round.
Questions 12 to 20 are based on the following problem:
Loftus and Palmer study (1974) demonstrated the influence of language on eyewitness memory. Participants watched a film of a car accident and were asked questions about what they saw. One group was asked “About how fast the cars were going when they smashed into each other?” Another group was asked the same question, except the verb was changed to “hit” instead of “smashed into”. The ‘smasher into” group reported significantly higher estimates of speed than the hit group. Suppose a researcher repeats this study with two samples of college students and obtains the following results:
|
Estimated Speed |
|
|
Smashed into |
hit |
|
n = 16 |
n = 16 |
|
M = 40 |
M = 34 |
|
SS = 510 |
SS = 414 |
Use a one-tailed test with α = .01.
based on this question
Use the data to make a 99% confidence
The lower limit of the confidence interval is= I got 1.17
The upper limit of the confidence interval is= I got 10.82
If it is a decimal number with two or more than two places, leave only two decimal places after the decimal point. Please do not round.
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