2. A journal published a study of the "tip-of-the-tognue" phenomenon, trying to think of a word that you know, but can't instantly retrieve, in senior citizens. The researchers compared 50 people between 60 and 72 years of age with 50 between 73 and 83 years of age. When primed with the initial syllable of a missing word, the younger seniors had a higher recall rate. Suppose 33 of the 50 seniors in the younger group could recall the word when primed with the initial syllable, while only 22 of the 50 seniors in the older group could recall the word. Compare the recall rates of the two groups, using a = 0.05. Does one group of elderly people have a significantly higher recall rate than the other? (a) Let pi represent the recall rate of the younger group (60-72 years of age) and p2 represent the recall rate of the older group (73-83 years of age). Give the null and alternative hypotheses. Ho: Ha:

2. A journal published a study of the "tip-of-the-tognue" phenomenon, trying to think of a word that you know, but can't instantly retrieve, in senior citizens. The researchers compared 50 people between 60 and 72 years of age with 50 between 73 and 83 years of age. When primed with the initial syllable of a missing word, the younger seniors had a higher recall rate. Suppose 33 of the 50 seniors in the younger group could recall the word when primed with the initial syllable, while only 22 of the 50 seniors in the older group could recall the word. Compare the recall rates of the two groups, using a = 0.05. Does one group of elderly people have a significantly higher recall rate than the other? (a) Let pi represent the recall rate of the younger group (60-72 years of age) and p2 represent the recall rate of the older group (73-83 years of age). Give the null and alternative hypotheses. Ho: Ha:

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

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Concept explainers

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.

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2. A journal published a study of the "tip-of-the-tognue" phenomenon, trying to think of a word that
you know, but can't instantly retrieve, in senior citizens. The researchers compared 50 people between
60 and 72 years of age with 50 between 73 and 83 years of age. When primed with the initial syllable of
a missing word, the younger seniors had a higher recall rate. Suppose 33 of the 50 seniors in the younger
group could recall the word when primed with the initial syllable, while only 22 of the 50 seniors in the
older group could recall the word. Compare the recall rates of the two groups, using a = 0.05. Does one
group of elderly people have a significantly higher recall rate than the other?
(a) Let pi represent the recall rate of the younger group (60-72 years of age) and p2 represent the recall
rate of the older group (73-83 years of age). Give the null and alternative hypotheses.
Но:
Ha:
(b) The test statistic 2 =
(round to four decimal places as needed)
(c) The p-value p =
(round to four decimal places as needed)
You should find one of the following useful for part c:
P(z > 2.2111) = 0.0135 P(2 > 2.2672) = 0.0117 P(2 > 2.2) = 0.0139
P(2 > 1.6036) z 0.0544
(d) State your conclusion.
REJECT or FAIL TO REJECT H. There is SUFFICIENT or INSUFFICIENT evidence to conclude
that the recall rate of the younger group is THE SAME AS or DIFFERENT FROM the recall rate of the
older group. (Circle the correct capitalized word or phrase in each of the three places a choice is given.)

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