The paint used to make lines on roads must reflect enough light to be clearly visible at night. Let ? denote the true average reflectometer reading for a new type of paint under consideration. A test of H0: ? = 20 versus Ha: ? > 20 will be based on a random sample of size n from a normal population distribution. What conclusion is appropriate in each of the following situations? (Round your P-values to three decimal places.) (c) n =26, t = -0.6P-value (b) n = 7, t = 1.7, a = 0.01P-value

Given,H0:μ=20Ha:μ>20n=7 , t=1.7 , α=0.01degrees of freedom(df)=n-1df=7-1=6P-value=P(t>1.7)P-value=0.070 (from t-table)P-value is greater than α=0.01Hence we fail to reject H0 .Given,n=26t=-0.6degrees of freedom(df)=n-1=26-1=25P-value =P(t>-0.6)P-value=0.723 (from t-table)P-value is greater than α=0.01Hence we fail to reject H0 .

Answered: The paint used to make lines on roads…

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

100%

The paint used to make lines on roads must reflect enough light to be clearly visible at night. Let ? denote the true average reflectometer reading for a new type of paint under consideration. A test of H₀: ? = 20 versus H_a: ? > 20 will be based on a random sample of size n from a normal population distribution. What conclusion is appropriate in each of the following situations? (Round your P-values to three decimal places.)

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.

Expert Solution