The Institute of Education Sciences measures the high school dropout rate as the percentage of 16-through 24-year-olds who are not enrolled in school and have not earned a high school credential.In 2009, the high school dropout rate was 8.1%. A polling company recently took a survey of 1000people between the ages of 16 and 24 and found 6.5% of them are high school dropouts. Thepolling company would like to determine whether the dropout rate has decreased.At a 5% significance level, the p-value is0.0250.02100.050.0319 The Boston public school district has had difficulty maintaining on-time bus service for its students("A Year Later, School Buses Still Late," Boston Globe, October 5, 2011). Suppose the districtdevelops a new bus schedule to help combat chronic lateness on a particularly woeful route.Historically, the bus service on the route has been, on average, 12 minutes late. After the scheduleadjustment, the first 36 runs were an average of 8 minutes late. As a result, the Boston public schooldistrict claimed that the schedule adjustment was an improvement-students were not as late.Assume a population standard deviation for bus arrival time of 12 minutes.Develop the null and alternative hypotheses to determine whether the schedule adjustmentreduced the average lateness time of 12 minutes.H,:µ<12 and H:µ212AH, :µ=8 and H:µ±8AH, :µ>12 and H: µ<12H :X 28 and H:X <8A

1) The hypotheses for the test are given below. Null hypothesis: H0: p = 0.081 Alternative…

The Institute of Education Sciences measures the high school dropout rate as the percentage of 16- through 24-year-olds who are not enrolled in school and have not earned a high school credential. In 2009, the high school dropout rate was 8.1%. A polling company recently took a survey of 1000 people between the ages of 16 and 24 and found 6.5% of them are high school dropouts. The polling company would like to determine whether the dropout rate has decreased. At a 5% significance level, the p-value is

The Institute of Education Sciences measures the high school dropout rate as the percentage of 16- through 24-year-olds who are not enrolled in school and have not earned a high school credential. In 2009, the high school dropout rate was 8.1%. A polling company recently took a survey of 1000 people between the ages of 16 and 24 and found 6.5% of them are high school dropouts. The polling company would like to determine whether the dropout rate has decreased. At a 5% significance level, the p-value is

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.4: Collecting Data

Problem 7E

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