A graduate student conducted an experiment in which 15 ten-month-old babies were asked to watch a climber character attempt to ascend a hill. On two occasions, the baby witnesses the character fail to make the climb. On the third attempt, the baby witnesses either a helper toy push the character up the hill or a hinderer toy prevent the character from making the ascent. The helper and hinderer toys were shown to each baby in a random fashion for a fixed amount of time. The baby was then placed in front of each toy and allowed to choose which toy he or she wished to play with. In 13 of the 15 cases, the baby chose the helper toy. Complete parts (a) through (d) below.
A graduate student conducted an experiment in which 15 ten-month-old babies were asked to watch a climber character attempt to ascend a hill. On two occasions, the baby witnesses the character fail to make the climb. On the third attempt, the baby witnesses either a helper toy push the character up the hill or a hinderer toy prevent the character from making the ascent. The helper and hinderer toys were shown to each baby in a random fashion for a fixed amount of time. The baby was then placed in front of each toy and allowed to choose which toy he or she wished to play with. In 13 of the 15 cases, the baby chose the helper toy. Complete parts (a) through (d) below.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
A graduate student conducted an experiment in which 15 ten-month-old babies were asked to watch a climber character attempt to ascend a hill. On two occasions, the baby witnesses the character fail to make the climb. On the third attempt, the baby witnesses either a helper toy push the character up the hill or a hinderer toy prevent the character from making the ascent. The helper and hinderer toys were shown to each baby in a random fashion for a fixed amount of time. The baby was then placed in front of each toy and allowed to choose which toy he or she wished to play with. In 13 of the 15 cases, the baby chose the helper toy. Complete parts (a) through (d) below.
Transcribed Image Text:(c) Use the binomial probability formula to determine the P-value for this test.
P-value =
(Round to three decimal places as needed.)
What is the correct conclusion regarding the null hypothesis?
A. Do not reject Ho. Although no level of significance is given, there is sufficient evidence to suggest the proportion of babies who choose the helper toy is greater
than 0.5.
B. Reject Ho. Although no level of significance is given, there is sufficient evidence to suggest the proportion of babies who choose the helper toy is greater than
0.5.
O C. Do not reject Ho. Although no level of significance is given, there is insufficient evidence to suggest the proportion of babies who choose the helper toy is
greater than 0.5.
D. Reject Ho. Although no level of significance is given, there is insufficient evidence to suggest the proportion of babies who choose the helper toy is greater
than 0.5.
Transcribed Image Text:A graduate student conducted an experiment in which 15 ten-month-old babies were asked to watch a climber character attempt to ascend a hill. On two occasions, the
baby witnesses the character fail to make the climb. On the third attempt, the baby witnesses either a helper toy push the character up the hill or a hinderer toy prevent
the character from making the ascent. The helper and hinderer toys were shown to each baby in a random fashion for a fixed amount of time. The baby was then
placed in front of each toy and allowed to choose which toy he or she wished to play with. In 13 of the 15 cases, the baby chose the helper toy. Complete parts (a)
through (d) below.
(a) Why is it important to randomly expose the baby to the helper or hinderer toy first?
A. The randomness in the order of exposure is important to avoid bias.
B. The randomness in the order of exposure is important to satisfy the conditions of using the binomial probability distribution.
O C. The randomness in the order of exposure is important to minimize the effect of the sample standard deviation.
O D. The randomness in the order of exposure is important to make sure half the babies see the helper first and the other half see the hinderer first.
(b) What would be the appropriate null and alternative hypotheses if the researcher is attempting to show that babies prefer helpers over hinderers?
Ho: P
0.5
H1: p
0.5
Rest Converter
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman