Estimate speed for the smashed into group

Reference no: EM13108354

In 1974, Loftus and Palmer conducted a classic study demonstrating how the language used to ask a question can influence eyewitness memory. In the study, college students watched a film of an automobile accident and then were asked questions about what they saw. One group was asked, "About how fast were the cars 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 "smashed into" group reported significantly higher estimates of speed than the "hit group. Suppose a researcher repeats this study with a sample of today's college students and obtains the following results.

Estimated Speed

Smashed Into Hit

n = 15 n = 15

M = 40.8 M = 34.0

SS = 510 SS = 414

a) Do the results indicate a significantly higher estimated speed for the "smashed into" group? Use a one-tailed test with a= .01

b) Compute the estimated value for Cohen's d to measure the size of the effect.

c) Write a sentence demonstrating how the results of the hypothesis test and the measure of effect size would appear in a research report.

Reference no: EM13108354

Questions Cloud

Calculate the estimated cohen d and r2 : A researcher is comparing the effectiveness of two sets of instructions for assembling a child's bike, A sample of eight fathers is obtained. Half of the fathers are given one set of instructions and the other half receives the second set.

Hypothesis testing in industry of law : Explain how hypothesis testing may be applicable in the industry of law. Provide a specific example and set up the null and alternative hypothesis?

How is stratified sample different from srs : Corporation has 2000 male and 500 female engineers. Stratified random sample of 200 male and 50 female engineers provides each engineer. How is the stratified sample different from the SRS?

Implemente important labor market policy interventions : During the period, there has on several occasions been implemented important labor market policy interventions. What does this mean for the model assumptions?

Estimate speed for the smashed into group : In 1974, Loftus and Palmer conducted a classic study demonstrating how the language used to ask a question can influence eyewitness memory.

Hypothesis testing and type two error : A corporation owns a factory that produces sulfuric acid. Because of changing conditions, the plant's output is quite variable. The company's president has observed that the output is normally distributed with a mean of 8,200 pieces per hour.

Economic analysis and organizational architecture : Discuss how organizational architecture and corporate culture are related. Use an example of a real-life firm and discuss how its corporate culture blends with its organizational architecture.

Determine the optimal order quantity and order frequency : The home goods department of a large department store sells 175 units per month of a certain large bath towel. The unit cost of a towel to the store is $2.50 and the cost of placing an order is estimated to be $12.00.

Identfy sex or gender as a requirement for legal marriage : You are going to address the Virginia State Legislature conceringng your support for legislation to not identfy sex/gender as a requirement for legal marriage. What techniques, and why, would you use in attemping to get the legislature to consider..

User Account

All Pages