Answered: The following is a section of the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Concept explainers

Topic Video

Question

Transcribed Image Text:Does advertising influence children as young as three? Researchers at Stanford University conducted a taste test with preschoolers. Each preschooler tasted two identical samples of five food items (hamburger, french fries, chicken nuggets, baby carrots, and milk). For each item, the children tasted one sample wrapped in a McDonald's wrapper and the other sample in an identical, but unbranded, wrapper. Some children tasted the sample in the branded wrapper first, others tasted the sample in the unbranded wrapper first. Consistently for all food items, the majority of preschoolers preferred the food in the McDonald's wrapper over the one in the unbranded wrapper, even though both samples were identical. (Source: Robinson, T. N., et al (2007). Effects of fast food branding on young children's taste preferences. Archives of Pediatrics & Adolescent Medicine (161), 792–797). The researchers found that the preschoolers who watched more television or ate more often at McDonald's were more likely to prefer the food wrapped in a McDonald's wrapper. However, is it possible that the children were attracted to the branded wrapper because it had more writing and colors on it, rather than because they recognized the McDonald's logo? You decide to conduct a similar experiment among 76 preschoolers using identical samples of carrots. In this experiment, you wrap one of the identical samples in a wrapper that is colorfully marked and lettered with a description of the contents and the other in an unmarked, unlabeled wrapper of the same size, shape, and material. Suppose in your experiment, 43 of the 76 children preferred the carrots in the wrapper that is colorfully marked and lettered with a description of the contents (the marked wrapper). You use a statistical computing package to conduct a chi-square goodness of fit test. The following tables consist of the output. Carrots Observed N Expected N Residual Marked 43 38 5.0 Unmarked 33 38 -5.0 Total 76 Test Statistics

identical samples in a wrapper that is colorfully marked and lettered with a description of the contents and the other in an unmarked, unlabeled
wrapper of the same size, shape, and material.
Suppose in your experiment, 43 of the 76 children preferred the carrots in the wrapper that is colorfully marked and lettered with a description of the
contents (the marked wrapper). You use a statistical computing package to conduct a chi-square goodness of fit test. The following tables consist of
the output.
Carrots
Observed N
Expected N
Residual
Marked
43
38
5.0
Unmarked
33
38
-5.0
Total
76
Test Statistics
Carrots
Chi-Square
1.32
df
1
Asymp. Sig
0.251
The following is a section of the write-up of your results. Using the information in the output, fill in the blanks with the appropriate words, phrases, or
values that correctly describe the results of your study. Use a significance level of a = .05.
In the sample,
preferred the identical food item in the marked wrapper. This difference in preference
significant, x2 ( ▼,
n = 76) =
MacBook Air

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Hypothesis Tests and Confidence Intervals for Proportions$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions