Question

Dr. Acton from the Ohio Department of Health indicated yesterday (4/9/20) that there is a need for a random sample of 1,000 people around the state of Ohio (representing different areas) to try to determine how prevalent Coronavirus is. Let's say that right now, they have the ability to test (which they don't yet), and out of 1,000 people, 430 test positive for the disease. Fill in the following steps, using alpha (@= .05), to try to prove that more than 40% of all Ohioans in the population have the disease currently. You may assume the sample size is large enough. (1 pt. ea, except 2 pts. for S.V. and p-value) R.R. (draw a picture, indicate rejection point(s) and area of .05) S.V. (show calculation) (round to 2 decimal places) Dec. Concl. p-value (calculate) and draw a picture (round to 4 decimal places)

Answer 1

Ho: pao.4 Ha: p > 0.4 Test statistic = PP es VP1-P) where, P = x - 930 = 0.43 2 دون | - Tos= 0.43 - 0.9 0.4 (0.6) Tooo 0.03 o.oiss T.S. = 1.9365 R.R. 0649

Plzzz2=0.05. Plz 7 1.6449)=0.05. t = 1.64 49. . Rejection Region = 1.6449. . T. s > Rejection Region. . We reject the nullhypo - Dec! We reject the null hypothesis Conclusiun: More than 40% ohioans in the populn have disease Currently of all the pralue = P(271.9365) - I-P(261.9365] E1-0.9736 1.9365 0:0264