Question

*PLEASE CHECK MY BOLDED ANSWERS AND FILL IN THE BLANKS I DON'T HAVE YET, THANKS*

The ophthalmologists wanted to see if the eye prcedure worked better compared to kids that pated their dominant eye for a year. The ophthalmologists recorded how much each patients vision improved for the two groups:

GROUP 1 Eye Procedure Improvement Scores: .8   1.2    1.4   .9 .5   .9      1.8 1.9 .8   .2

GROUP 2 Eye Patch Improvement Scores: .5      1     1.2     .8 .9     .1      0      .4 1.1   .3      .7     .9

KEY:

.8 means their vision IMPROVED by .8

(Ex: their vision score went from +6 to +5.2)
  

State a 99% confidence interval:

I am 99% confident that the mean difference in ____ improvement between patients that _____ and _____ is between -0.185 and 0.949.

Is there good evidence that the vision for the kids that had the procedure improved more than the kids that patched their eye at the .01 level?

State your hypothesis: (not using any spaces & be sure to use the appropriate subscripts for the 2 groups)

hypotheses: H_o:mu1=mu2 H_a: mu1>mu2

Compute the test statistic: 1.92 and P-value = 0.032

There  (is/is not) statistical evidence at the .01 level that ______.

Answer 1

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