A researcher is examining whether humidity level impacts the probability of success of LASIK surgery. Seventy five individuals received LASIK surgery during high humidity weather and 135 individuals received the surgery during normal or low humidity weather. The researcher found that 23 of the high humidity subjects and 17 of the normal/ low humidity subjects required touch-up surgery. Is there a difference in the proportion who needed touch-up surgery based on humidity? Run the test at a 5% level of significance. 1) the appropriate null and alternative hypotheses; 2) the appropriate test); 3) the decision rule. 4) the calculation of the test statistic. 5) your conclusion including a comparison to alpha or the critical value. What do the results mean?

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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A researcher is examining whether
humidity level impacts the probability of
success of LASIK surgery. Seventy five
individuals received LASIK surgery during
high humidity weather and 135
individuals received the surgery during
normal or low humidity weather. The
researcher found that 23 of the high
humidity subjects and 17 of the normal/
low humidity subjects required touch-up
surgery. Is there a difference in the
proportion who needed touch-up surgery
based on humidity? Run the test at a 5%
level of significance.
1) the appropriate null and alternative
hypotheses; 2) the appropriate test); 3)
the decision rule. 4) the calculation of the
test statistic. 5) your conclusion including
a comparison to alpha or the critical
value. What do the results mean?
Transcribed Image Text:A researcher is examining whether humidity level impacts the probability of success of LASIK surgery. Seventy five individuals received LASIK surgery during high humidity weather and 135 individuals received the surgery during normal or low humidity weather. The researcher found that 23 of the high humidity subjects and 17 of the normal/ low humidity subjects required touch-up surgery. Is there a difference in the proportion who needed touch-up surgery based on humidity? Run the test at a 5% level of significance. 1) the appropriate null and alternative hypotheses; 2) the appropriate test); 3) the decision rule. 4) the calculation of the test statistic. 5) your conclusion including a comparison to alpha or the critical value. What do the results mean?
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