Solution-Measure effect size for the mean difference

Measure effect size for the mean difference

Reference no: EM132844039

Does posting calorie content for menu items affectpeople's choices in fast-food restaurants? According to results obtained by Elbel, Gyamfi, and Kersh (2011), the answer is no. The researchers monitored the calorie content of food purchases for children and adolescents in four large fast-food chains before and after mandatory labeling began in New York City. Although most of the adolescents reported noticing the calorie labels, apparently the labels had no effect on their choices. Data similar to the results obtained show an average of M= 786 calories per meal with s = 85 for n = 100 children and adolescents before the labeling, compared to an average of M = 772 calories with s = 91 for a similar sample of n =100 after the mandatory posting.

a. Use a two-tailed test with a = .05 to determine whether the mean number of calories after the posting is significantly different than before calorie content was posted.

b. Calculate r2 to measure effect size for the mean difference.

9. A long history of psychology research has demonstrated

Reference no: EM132844039

Questions Cloud

What rituals does your family practice when someone dies : Think for a while about cultural practices and how they affect health or illness in your own family. They may be difficult to identify as such at first.

Compute the rate of roce : Compute the rate of ROCE. Disaggregate ROCE into profit margin for ROCE, assets turn- over, and capital structure leverage ratio components.

Determine Jocelyne total income tax deduction per pay period : Her federal and provincial TD1 claim codes are 2. Determine Jocelyne's total income tax deduction per pay period

Existing communication strategy-both internal and external : Discuss how a business may need to modify its existing communication strategy - both internal and external -

Measure effect size for the mean difference : Use a two-tailed test with a = .05 to determine whether the mean number of calories after the posting is significantly different than before calorie content was

Prepare quarterly direct materials purchases budgets : Prepare quarterly direct materials purchases budgets for Steering Industrial for 2020. Finished units of production require 6 pounds of raw material per unit.

What is the probability that the sum is 7 : An experiment is rolling two dice. a.) What is the probability that the sum is 6 given that the first die is a 5?

Explain the temperature at the top of the mountain : Explain the temperature at the top of the mountain. The two variables were measured for a sample of mountains and least squares regression line was calculated.

Effective communication strategy : What role do the Stakeholder Management processes play in determining stakeholder communication needs and developing an effective communication strategy?

User Account

All Pages

Measure effect size for the mean difference

Reference no: EM132844039

Reference no: EM132844039

Questions Cloud

Reviews

Write a Review

Basic Statistics Questions & Answers

Who did better relative to classmates

Find the mean variance and standard diviation of the

Explain what have you learned about statistics

How many cases were included in the data

Correct answers versus the number of correct answers

Fnd 68 confidence intervals for a the percentage of civil

Probability that jamal will be going to work tomorrow

Find the expected value of xrounded

Hold a user-defined number of test scores

What percent of invoices were paid within fifteen days

Environmental impact of energy wastage

What are the other two data values

Assured A++ Grade

Academics

Major Subjects

Majors

Get In Touch

TERMS & POLICIES

HELP & SUPPORT