A study of 45 members of the Mall Walkers group showed that they could walk at an average rate of 3.3 miles per hour. A previous study showed that the standard deviation is 1.0 miles per hour. Make a 90% conﬁdence interval statement for the mean walking speed for all members.I am 90% confident that the mean walking speed for mall walkers is between 0.19084 mph and 1.8092 mph.I am 90% confident that the mean walking speed for mall walkers is between 3.0548 mph and 3.5452 mph.I am 90% confident that the mean walking speed for mall walkers is between 3.0495 mph and 3.5505 mph.I am 90% confident that the mean walking speed for mall walkers is between 0.17344 mph and 1.9266 mph.

Answered: Image /qna-images/answer/2beb9576-3a87-4333-b825-2b5f27c6e07b.jpg

Answered: study of 45 members of the Mall Walkers…

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

A study of 45 members of the Mall Walkers group showed that they could walk at an average rate of 3.3 miles per hour. A previous study showed that the standard deviation is 1.0 miles per hour. Make a 90% conﬁdence interval statement for the mean walking speed for all members.

I am 90% confident that the mean walking speed for mall walkers is between 0.19084 mph and 1.8092 mph.
I am 90% confident that the mean walking speed for mall walkers is between 3.0548 mph and 3.5452 mph.
I am 90% confident that the mean walking speed for mall walkers is between 3.0495 mph and 3.5505 mph.
I am 90% confident that the mean walking speed for mall walkers is between 0.17344 mph and 1.9266 mph.

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