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Cobleskill Moodle! My Courses Library Calendar CobyNet· kademics . Home My courses MATH-125-40002 201712 Topic 5:sections 72,7.3 Online Exam s Question 1 Not yet answered Points out of 10.00 Flag question A sample survey of 300 union members in New York State reveals a sample proportion of 37% that Republican candidate for governor. Construct the 98% confidence interval for the true population proportion of all New York State union members who favor the Republican candidate favor the Select one a.0.315p0.425 Ob.0.324p0.416 c, 0.305

Explanation / Answer

I am not able to read question first clearly. It is slight blur image.

For question second 95% confidence interval

By using Ti 84 calculator

Follow following path

Hit stat---->hit test----->by using down arrow go to 1: prop z interval now press enter----->

Now insert values

x = 30

N= 375

Confidence level = .95

Now hit enter

You Will get confidence interval

0.052 < p < 0.107

Therefore option 'a' is correct

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For question third as confidence interval decrease the size of confidence interval decrease.

Therefore option last the width of confidence interval will be narrower.

Therefore option 'e' is correct.

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