Answered: ou are doing research on balance and…

Name: You are doing research on balance and fitness. To complete this resea
Uploaded: 2024-03-20T07:07:00.000Z
Channel: Bartleby
Description: You are doing research on balance and fitness. To complete this research you will need a watch with a second hand. Identify a random sample of n = 12 men and n = 8 women. You must answer this question: How do you establish that this sample is trul

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

Concept explainers

Topic Video

Question

You are doing research on balance and fitness. To complete this research you will need a watch with a second hand. Identify a random sample of n = 12 men and n = 8 women. You must answer this question: How do you establish that this sample is truly random?

You will analyze your data and compute the following statistics for each group:

4) The 90% confidence interval of the mean

5) Construct a complete hypothesis test and determine if the two groups have significantly different balances using α = 0.05.

		Balance Time (sec)	Number of Days Workout	Favorite Workout
1	Men 1	28	4	Arms	1
2	Men 2	18	6	Chest	3
3	Men 3	158	3	Arms	1
4	Men 4	177	5	Legs	2
	Men 5	41	6	Legs	2
	Men 6	92	4	Chest	3
	Men 7	72	1	Legs	2
	Men 8	114	1	Back	4
	Men 9	144	5	Legs	2
	Men 10	133	6	Legs	2
	Men 11	36	7	Legs	2
	Men 12	67	1	Arms	1
	Women 1	61	6	Back	4
	Women 2	106	7	Legs	2
	Women 3	139	4	Back	4
	Women 4	94	1	Back	4
	Women 5	114	4	Legs	2
	Women 6	182	6	Arms	1
	Women 7	23	7	Chest	3
	Women 8	180	1	Arms	1

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

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 4 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Hypothesis Tests and Confidence Intervals for Proportions$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions