Please help! Need help understanding formulas. a week 2 Practice worksheet secti

Question

Please help! Need help understanding formulas.

a week 2 Practice worksheet section Aw2 Insert Design Layout References Mailings Review View Home Calibri (Headin... 12 A4 A Aa Paste 3. Use the following results for marijuana u which is provided by a certain drug company. Among 200 subjects with positive results, there are 40 false positive results; among 100 negative results, there are 10 false negative results. a. Construct the table using the above information. b. lfone of the test subjects is randomly selected, find the probability that the subject tested negative or did not use marijuana. (Round to four decimal places Page 2 of 8 268 Words English (US) Search in Documen t Share A Style Pane 80%

Explanation / Answer

6 answer

given that defective are 480 , probability of defective q =480/10000 =0.048

p=1-q =1-0.048 = 0.952

a) p(x=4), 0.952^4 =0.8214

b)p(x=100 ) , 0.952^100 =0.007306

  

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