The data is as follows: Regular Diet No-Lecithin Diet n 5 n = 10 M= 25 M = 33 SS = 250 SS = 140 a. Is there a significant effect of lecithin on learning performance? Test at a .05 level of significance. b. Estimate how much does lecithin affect learning performance. Make a point estimate and an 95% confidence interval estimate of the population.
The data is as follows: Regular Diet No-Lecithin Diet n 5 n = 10 M= 25 M = 33 SS = 250 SS = 140 a. Is there a significant effect of lecithin on learning performance? Test at a .05 level of significance. b. Estimate how much does lecithin affect learning performance. Make a point estimate and an 95% confidence interval estimate of the population.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 27PPS
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Transcribed Image Text:932152848557...
x Chapter 7 Assign...
X Chapter 8 Assigh..
The data is as follows:
Regular Diet No-Lecithin Diet
n = 10
n = 5
M= 25
M= 33
SS = 250
SS = 140
%3D
a. Is there a significant effect of lecithin on learning
performance? Test at a .05 level of significance.
b. Estimate how much does lecithin affect learning
performance. Make a point estimate and an 95%
confidence interval estimate of the population.
Transcribed Image Text:2. Recent studies have allowed psychologists to establish
definite links between specific foods and specific brain
functions. For example, lecithin has been shown to increase
the concentration of certain brain chemicals that help
regulate memory and motor coordination.
An experiment was conducted that involves two separate
samples of newborn rats. The ten rats in the first sample
are given a diet with standard amounts of lecithin. The five
rats in the second sample are fed a special diet, which
contains almost no lecithin. After 6 months, each rat is
tested on a specially designed learning problem that
requires both memory and motor coordination. The score
for each animal is the number of errors it made before
solving the learning problem.
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