Question

6. Given the probability distribution below, find Mean and Standard deviation. X P(x) 0 0.10 10 0.50 20 0.05 30 0.35 Total 1.00 I 7. To inspect manufacturing processes, companies typically examine samples of parts for deficiencies. One company that manufactures ballpoint pens selected samples of 1000 pens on each of 9 days. The company recorded, for each sample of 1000, the number of defective pens in the sample. Here are their data: 19, 16, 28, 35, 35, 30, 16, 35,16 Find the mean, median, mode, variance, and standard deviation. 8. Multiple myeloma is a form of cancer, For decades, there was no known treatment Rather recently, though, doctors surmised that the drug Thalidomide, which was given

Answer 1

Pin) 0:10 10 Oso 20 0.05 0.35 30 Mean ECM) = Enip(n) 2) Mean (0X0.10)+ (10 x0.50) + ( 20 X 0.05) + (20 X 0.35) sot 5 + 1+ los 16.5 biri stand and denation & Ivar(x) 108 & Var (X) Exy - [tex]]> Ex2pca) ( 21(0? Xo'ld) + (LOL X0.50) (202X0.05) + ( 304 x 0.35) & EXY = Sot 20+ 385 315 ELAY (20)

Var(x) = 385 (16.5)2 385 - 272.25 (1 112.75 standard deviation. √ 112.75 10.618 E 10. 62