Answered: The paper, “Pathological Video-Game use…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Question

The paper, “Pathological Video-Game use Among Youth Ages 8 to 18: A National Study”
included the information in the accompanying table about video game playing time for representative samples of 588 males and 590 females selected from U.S. residents age 8 to 18. Carry out a hypothesis test to determine if there is convincing evidence that the mean number of hours per week spent playing video games by females is less than the mean number of hours spent by males. Use a significance level of α = 0.01. Communicate your results.

3. The paper, “Pathological Video-Game use Among Youth Ages 8 to 18: A National Study"
included the information in the accompanying table about video game playing time for representative
samples of 588 males and 590 females selected from U.S. residents age 8 to 18.
Sample Sample
Size
Sample Mean
(hours per week)
Sample Standard Deviation
(hours per week)
Females
9.2
10.2
Males
588
16.4
14.1
Carry out a hypothesis test to determine if there is convincing evidence that the mean number of
hours per week spent playing video games by females is less than the mean number of hours spent
by males. Use a significance level of a = 0.01.
Hypotheses: H,
13D
HaiM <M2
Method:
TBivanate Numericaldata
s: Sample data
N 2 paired Samples
Check:
Calculate:
Test
bho이-
Communicate:
ine

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

Expert Solution