Data from the Motor Vehicle Department indicate that 80% of all licensed drivers are older than age 25.In a sample of n = 50 people who recently received speeding tickets, 33 were older than 25 years and the other 17 were age 25 or younger. Is the age distribution for this sample significantly different from the distribution for the population of licensed drivers? Use α = .05.State the alternative hypothesis and null hypothesisCalculate the degrees of freedom (df) for chi-square.Using an α = .05, what is the critical value for chi-square (χ2crit)?Calculate chi-square (χ2) and provide a statement with words about your decisionWrite a sentence demonstrating how the results from the hypothesis test would appear in a research report.

Given: sample size, n = 50 number of drivers older than 25 years = 33 Sample proportion, p^ = 33/50…

Answered: Data from the Motor Vehicle Department…

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

Data from the Motor Vehicle Department indicate that 80% of all licensed drivers are older than age 25.

In a sample of n = 50 people who recently received speeding tickets, 33 were older than 25 years and the other 17 were age 25 or younger. Is the age distribution for this sample significantly different from the distribution for the population of licensed drivers? Use α = .05.
State the alternative hypothesis and null hypothesis
Calculate the degrees of freedom (df) for chi-square.
Using an α = .05, what is the critical value for chi-square (χ²_crit)?
Calculate chi-square (χ²) and provide a statement with words about your decision
Write a sentence demonstrating how the results from the hypothesis test would appear in a research report.

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