Help me verify answers by using SAS output

[JaeGonKim]

Hi Ksharp,

b. the value of the test-statistic is computed = 5. Right?, could you explain this value?

[Rick_SAS]

With respect, I do not think that KSharp's analysis is correct. If you want to perform a one-sided test of the hypothesis that mu>4 against the alternative that mu<=4, then read the excellent online statistics course from PennState.

In particular, the test statistic should be t = (x_bar - mu0)/StdErr.

Unfortunately, I have other things to do, but I wish you luck in your efforts.

[JaeGonKim]

Hi everyone,

I have a example:

A movie was rated by the viewers who had watched it. The scores range from a low of 1 (very uninteresting) to a high of 5 (very fascinating). A sample of 16 viewers was chosen and their ratings are listed below:

3     5     4     3     4     5     5     4     3     2     5     4     3     2    3     5

Suppose the ratings of the movie can be assumed to be normally distributed. The movie production company claimed that the mean rating score is at least 4. An independent movie review company wants to test this claim. Answer questions (a) through (c) without using statistical software. Using α=0.05, would the movie review company conclude that the mean rating score of the movie is at least 4?.

Could you help me tell what is the null and alternative hypotheses: Ho vs Ha?

Thanks,

Joe

[Reeza]

You may find this helpful:

https://support.sas.com/edu/schedules.html?crs=STAT1&ctry=us

Note that the e-course is free.

[JaeGonKim]

Hi Reeza,

I know, but I don't sure. Ho >= 4 or > 4?. Please tell me know.

Thanks,

Joe

[Kurt_Bremser]

I moved this repeated question back into the thread where you already accepted a solution to it.

[JaeGonKim]

Yes, please help me.