4. For each the following scenarios in (a) – (e), specify the correct hypothesis test you shoulduse to analyze the data.a. Participants took part in a study on aversive noise and its performance on performingskilled tasks. Two groups of participants solved moderately difficult math problems whilelistening to a loud noise. One group heard the noise at fixed intervals, the other heard it atrandom intervals.b. A gerontologist wants to investigate whether an herbal dietary supplement enhancesshort-term memory in adults 85 years old and older. He dispenses the supplement to agroup of 65 elderly persons living in a nursing facility. After four months, he measures thegroup's short term memory performance (M = 35). The performance for individuals 85years and older in the population has a mean of u= 30 and a o= 10.%3Dc. An industrial psychologist is concerned that a round of recent layoffs at a plant mayhave increased the stress felt by employees who retained their positions. To measurewhether survivor stress actually exists, the psychologist administered a stress measure to asample of employees before and after the layoffs occurred.

It is a hypothesis testing problem.

Answered: For each the following scenarios in (a)…

Math

Statistics

For each the following scenarios in (a) – (e), specify the correct hypothesis test you should use to analyze the data.

MATLAB: An Introduction with Applications

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ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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Concept explainers

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.

Question

4. For each the following scenarios in (a) – (e), specify the correct hypothesis test you should
use to analyze the data.
a. Participants took part in a study on aversive noise and its performance on performing
skilled tasks. Two groups of participants solved moderately difficult math problems while
listening to a loud noise. One group heard the noise at fixed intervals, the other heard it at
random intervals.
b. A gerontologist wants to investigate whether an herbal dietary supplement enhances
short-term memory in adults 85 years old and older. He dispenses the supplement to a
group of 65 elderly persons living in a nursing facility. After four months, he measures the
group's short term memory performance (M = 35). The performance for individuals 85
years and older in the population has a mean of u= 30 and a o= 10.
%3D
c. An industrial psychologist is concerned that a round of recent layoffs at a plant may
have increased the stress felt by employees who retained their positions. To measure
whether survivor stress actually exists, the psychologist administered a stress measure to a
sample of employees before and after the layoffs occurred.

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