Answered: A vonsuner group claims that thr mean…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

A vonsuner group claims that thr mean minimum time it takes for a sedan to travel a quarter mile is greater than 14.5 seconds. A random samoke of 23 sedans has a mean minimum time to travel a quarter mile of 15.3 seconds and a standard deviation of 2.12 seconds. At a=0.10 is there enough evidence to support the consumer group's claim? Assume the population is normally distributed.

i) Identify the claim and state Ho Ha H0

ii) Give the P-value: P=0.042, find tge standardized test statistic, t=

iii) Decide wheter to reject or faik to reject the null hypothesis.

H0 because the P-value

A consumer group claims that the mean minimum time it takes for a sedan to travel a quarter mile is greater than 14.5 seconds. A random sample of 23 sedans has a mean minimum time to travel a quarter mile of 15.3 seconds and a standard deviation of 2.12 seconds. At α = 0.10 is there enough evidence to support the consumer group’s claim? Assume the population is normally distributed.

Complete parts (i) - (iv).

i) Identify the claim and state

\( H_0 \)

and

\( H_a \).

\( H_0 \)

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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