The Boston public school district has had difficulty maintainingon-time bus service for its students ("A Year Later, SchoolBuses Still Late," Boston Globe, October 5, 2011). Supposethe district develops a new bus schedule to help combatchronic lateness on a particularly woeful route. Historically, thebus service on the route has been, on average, 12 minuteslate. After the schedule adjustment, the first 36 runs were anaverage of 8 minutes late. As a result, the Boston publicschool district claimed that the schedule adjustment was animprovement-students were not as late. Assume a populationstandard deviation for bus arrival time of 12 minutes.At the 5% significance level, does the evidence support theBoston public school district's claim?No, since the p-value is less than alphaO No, since the value of the test statistic is greater than thecritical valueYes, since the p-value is less than alphaYes, since the value of the test statistic is greater thanthe critical value

Given that Hypothesized Population Mean (\mu)(μ) = 1212 Population Standard Deviation…

Answered: The Boston public school district has…

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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How common are financial cost or contractual constraints associated with smartphone ownership? A survey of smartphone users found that 49% of the 18- to 29-year-olds, 40% of the 30- to 49-year-olds, 25% of the 50- to 64-year-olds, and 19% of those age 65 or older have reached the maximum amount of data they are allowed to use as part of their plan, at least on occasion: Suppose the survey was based on 200 smartphone owners in each of the four age groups: 18 to 29, 30 to 49, 50 to 64, and 65 and older What is the p-value?

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Hypothesized Population Mean $(\mu)$ =	$12$
Population Standard Deviation $(\sigma)$ =	$12$
Sample Size $(n)$ =	$36$
Sample Mean $(\bar X)$ =	$8$
Significance Level $(\alpha)$	$0.05$