QUIZ ONE POPULATION SMALL SAMPLE

A Company claims that batery life of their MP3 player is least 30 hours. You suspect this claim is in correct and find that random sample of 18 MP3 player has mean batery life 28,5 hours and standard deviation 1,7 hours. Is there enough evidende to reject claim use 0,01. Can You write the hyothesis testing in this case?

• Ho: μ=30

  H1: μ≠30

• Ho: μ>30

  H1: μ<30

• Ho: μ<30

  H1: μ>30

• Ho: μ=30

  H1: μ>30

From number Question number 1, find t table from significance level 0,01; n=18

• -1,333

• 1,330

• -2,552

• -2,567

A Company claims that batery life of their MP3 player is least 30 hours. You suspect this claim is in correct and find that random sample of 18 MP3 player has mean batery life 28,5 hours and standard deviation 1,7 hours. Is there enough evidende to reject claim use 0,01.

Find statistic test for this using t-test

• t-test= 3,66

• t-test= -3,66

• t-test=4,51

• t=test=-4,51

A Company claims that batery life of their MP3 player is least 30 hours. You suspect this claim is in correct and find that random sample of 18 MP3 player has mean batery life 28,5 hours and standard deviation 1,7 hours. Is there enough evidende to reject claim use 0,01. What

What is your decision?

• Reject Null Hypothesis

• Not Reject Null Hypothesis

• Accept Null Hypothesis

A Company claims that batery life of their MP3 player is least 30 hours. You suspect this claim is in correct and find that random sample of 18 MP3 player has mean batery life 28,5 hours and standard deviation 1,7 hours. Is there enough evidende to reject claim use 0,01. Can You write the hyothesis testing in this case?

Choose the correct conclusion statement

• Batery life MP3 player is least 30 hours

• Batery life MP3 player is grater than 30 hours

• Batery life MP3 player is not 30 hours

• Batery life MP3 player is 30 hours

A Company claims that batery life of their MP3 player is least 30 hours. You suspect this claim is in correct and find that random sample of 18 MP3 player has mean batery life 28,5 hours and standard deviation 1,7 hours. Is there enough evidende to reject claim use 0,01.

What type of test should you run?

• 1 sample Z-test

• 1 sample T-Test

• 1 sample Prop-Ztest

• 2 Sample Independen Test