If the population mean speed on this stretch of the

Assignment Help Basic Statistics

Reference no: EM13633721

It has been shown that people drive 5 - 10mph faster than the posted speed limit on a highway. It has been thought that changing the speed limit from 65mph to 70mph would not increase the "typical" speed of 70 - 75mph. On one stretch of a highway the speed limit was increase from 65mph to 70mph. If the population mean speed on this stretch of the highway has been 68mph with a standard deviation of 5mph, what is the sample size needed to detect an increase in speed on this stretch of the highway of 10mph? Let alpha = 0.02 and beta = 0.05

Write the null and alternative hypotheses:

Calculate the sample size:

Reference no: EM13633721

Questions Cloud

Of all mortage foreclosures in the united states 69 are : of all mortage foreclosures in the united states 69 are caused by diability . people who are injured or ill cannot work

The professor can use the software free of charge for one : a stat professor has observed that for several years about 14 of the students who initially enroll in his introduction

If the population mean speed on this stretch of the highway : it has been shown that people drive 5 - 10mph faster than the posted speed limit on a highway. it has been thought that

The proper placement of a figure within the text 3 the : clarify how you would display each of the following in a report 1. the outcomes of a t test with 38 degrees of freedom

If the population mean speed on this stretch of the : it has been shown that people drive 5 - 10mph faster than the posted speed limit on a highway. it has been thought that

Let x be a continuous random variable with probability : let x be a continuous random variable with probability density function fx given byfx ??1 6x2 3x if ?3 ? x ? 0kx?x2 if

A box contains 10 blue and 5 red markers find the : a box contains 10 blue and 5 red markers. find the probability of obtaining at least two red markers if four markers

Write the null and alternative hypotheses draw the curves : it has been shown that people drive 5 - 10mph faster than the posted speed limit on a highway. it has been thought that

Construct the sampling distribution of sample means for : consider the set of odd single-digit integers 13579.a make a list of all samples of sixe 2 that can be drawn from this

User Account

All Pages