Question 6

Paste dataset 1 into the dataset summarizer

a) Paste in inferential statistics that measure evidence for the claim there is a relationship between the variables "course useful?" and "number of videos watched ?" if you consider the whole population

b) Make suitable comments about the output in part (a)

c) Go back to the dataset summarizer and scroll down , Paste in the output for question 6c given below the inferential statistics and fill in the blank , replace the blank with a number that would make the p-value lower than the p-value in question 6a

descriptive sample statistics 1a

xbar1 xbar2 s1 s2 n1 n2

55 82.5 11 16.5 2 4

Inferential statistics

Estimate of the difference between population means (6a)

xbar1-xbar2 standard error of estimate xbar1-xbar2 t test stat df two sided pvalue

-27.5 11.33854047 -2.42535625 3 5.79E-02

To calculate the p-value H0:1=2 is assumed to be true

since the test is two sided H1 is H1:12

descriptive sample statistics of a sample with a lower pvalue (6c)

xbar1 xbar2 s1 s2 n1 n2

Blank 82.5 11 16.5 2 4