1. Mental measurements of young children are often made by giving them blocks and telling them to build a tower as tall as possible. One experiment of block building was repeated a month later, with the times (in seconds) listed in the accompanying table (based on data from "Tower Building", by Johnson and Courtney, Child Development, Vol.3). The previous experiment shows that the times are normally distributed. Use a 0.01 level of significance to test the claim that there is no difference between the two times. Child First Trial Second Trial 30 ABC DEFG HI 30 19 19 23 29 178 42 20 12 39 JKL M 14 81 17 31 52 14 8 14 52 14 22 17 8 11 30 14 17 15 Solve first for the mean and standard deviation first. Use the standard deviation formula with n-1 as the denominator.
1. Mental measurements of young children are often made by giving them blocks and telling them to build a tower as tall as possible. One experiment of block building was repeated a month later, with the times (in seconds) listed in the accompanying table (based on data from "Tower Building", by Johnson and Courtney, Child Development, Vol.3). The previous experiment shows that the times are normally distributed. Use a 0.01 level of significance to test the claim that there is no difference between the two times. Child First Trial Second Trial 30 ABC DEFG HI 30 19 19 23 29 178 42 20 12 39 JKL M 14 81 17 31 52 14 8 14 52 14 22 17 8 11 30 14 17 15 Solve first for the mean and standard deviation first. Use the standard deviation formula with n-1 as the denominator.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:1. Mental measurements of young children are often made by giving them blocks and telling them to build a tower as
tall as possible. One experiment of block building was repeated a month later, with the times (in seconds) listed in
the accompanying table (based on data from "Tower Building", by Johnson and Courtney, Child Development,
Vol.3). The previous experiment shows that the times are normally distributed. Use a 0.01 level of
significance to test the claim that there is no difference between the two times.
Child
BCDEFG
19 23 29 178 42 20
KLM
A
N
First Trial
30
19
12
39
14
81
17
31
52
Second Trial
6.
22
8
30
30
14
14
52
14
17
11
14
17
15
Solve first for the mean and standard deviation first. Use the standard deviation formula with n-1 as the
denominator.
a. Claim (in symbolic form):
Но:
На:
b. level of significance:
test-statistic:
tail of distribution:
c. Decision Rule: Reject Ho if
d.Computation
e. Decision (Reject Ho or Failed to reject Ho)
f. Conclusion
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