Thank you for your help again. Could you please help me answer the following mul

Question

Thank you for your help again. Could you please help me answer the following multi-part question about this outoutput. Sorry for grainy picture best I can do

1-a. Refer to the histogram and box plots. For which, if any, of the groups do you believe creat_68 is normally distributed, and how can you tell? If not what kind of distribution does it appear to have?

1-b. Refeer to the normal probability plots. For which if any of the groups do you believe creat_68 is normally distributed and how can you tell? If not what kind of distribution does it appear to have?

1-c. Refer to the normality tests. For each group determine whether there is evidence at level = 0.05 that the distribution of creat_68 is non-normal and how can you tell? Fully explain how you made your decision, citing specific numbers from the output.

Note: H0 : Distribution is normal HA: Distribution is not normal

OUTPUT SUMMARY 1: Selected output of PROC UNIVARIATE for the variable creat 68. creat-68 for group = 3 (control) Tests for Normality creat 68 for group 1 creat-68 for group-2 (high use) Tests for Normality (low use) Tesis for Normality Test P Valbe Test Statistic p Vaine Vol". Test P Value 0901303 Pr

Explanation / Answer

1-a. Refer to the histogram and box plots. For which, if any, of the groups do you believe creat_68 is normally distributed, and how can you tell? If not what kind of distribution does it appear to have?

Answer : Here as we see the hisogram and box plots. Here only by seeing we can say that for group 2 (Low use) The plot can be sid normally distriubted as it is looking symmetric with peak value in middle of the group frequencies. The Group 3 seems binomial distribution with high p value (around 0.8) and group 2 also look like binomial or poisson

1-b. Refeer to the normal probability plots. For which if any of the groups do you believe creat_68 is normally distributed and how can you tell? If not what kind of distribution does it appear to have?

Answer : From normal probability plot group 2 and group 3 seems normally distributed as the data values are randomally scattered around the Q-Q plot.

1-c. Refer to the normality tests. For each group determine whether there is evidence at level = 0.05 that the distribution of creat_68 is non-normal and how can you tell? Fully explain how you made your decision, citing specific numbers from the output.

Note: H0 : Distribution is normal HA: Distribution is not normal

Answer : HEre from normallity tests at level = 0.05. None of the data set look like normal here as all the tests for all the groups shows the p - value less than 0.05 that means we have to reject the null hypothesis and can conclude tht none of the distibution is not normal. Here for all the tests, we took the p - value numbers where we can see that each number is less than 0.05 for each test of each group.

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