he manufacturer of a particular vacuum cleaner estimates that the mean length of time before the main belt needs replaced is at least 27 months. A random sample of 25 of their vacuum cleaners found a mean length of time prior to belt replacement of 25.9 months, with a standard deviation of 4.8 months. At ? = .05, can you support the manufacturer’s claim?     Yes – the claim is the null hypothesis and I failed to reject the null hypothesis. Yes – the claim is the null hypothesis and I failed to reject the null hypothesis. No – the claim is the null hypothesis and I rejected the null hypothesis. No – the claim is the null hypothesis and I rejected the null hypothesis. Yes – the claim is the alternate hypothesis and I rejected the null hypothesis. Yes – the claim is the alternate hypothesis and I rejected the null hypothesis. No – the claim is the alternate hypothesis and I failed to reject the null hypothesis. No – the claim is the alternate hypothesis and I failed to reject the null hypothesis.

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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The manufacturer of a particular vacuum cleaner estimates that the mean length of time before the main belt needs replaced is at least 27 months. A random sample of 25 of their vacuum cleaners found a mean length of time prior to belt replacement of 25.9 months, with a standard deviation of 4.8 months. At ? = .05, can you support the manufacturer’s claim?
 
 
  • Yes – the claim is the null hypothesis and I failed to reject the null hypothesis.
    Yes – the claim is the null hypothesis and I failed to reject the null hypothesis.
  • No – the claim is the null hypothesis and I rejected the null hypothesis.
    No – the claim is the null hypothesis and I rejected the null hypothesis.
  • Yes – the claim is the alternate hypothesis and I rejected the null hypothesis.
    Yes – the claim is the alternate hypothesis and I rejected the null hypothesis.
  • No – the claim is the alternate hypothesis and I failed to reject the null hypothesis.
    No – the claim is the alternate hypothesis and I failed to reject the null hypothesis.
 
 
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