They conducted an experiment with a large monitor and measured processing time. After reviewing 20 documents, the calculated average processing time per document was XXXXXXXXXXseconds. The manager...

They conducted an experiment with a large monitor and measured processing time. After reviewing 20 documents, the calculated average processing time per document was 190.58 seconds. The manager believes that a bigger monitor helped reduce the processing time for reviewing foreclosure documents. Conduct a hypothesis test using a 95% confidence level, which means that significance level a = 0.05.

Explain what standard deviation is. Locate the calculated standard deviation in the paragraph description

Explain what a random variable is. Locate it in the paragraph description

Test type:
Compare and contrast
t-test and
z-test. Once done, determine which one is appropriate for the experiment given the fact that the sample size is less than 30.