Question
Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of...
Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is 137000 dollars. Assume the standard deviation is 31000 dollars. Suppose you take a simple random sample of 76 graduates.
Find the probability that a single randomly selected salary has a mean value between 126332.2 and 148379 dollars.
P(126332.2 < X < 148379) = (Enter your answers as numbers accurate to 4 decimal places.)
Find the probability that a random sample of size n=76n=76 has a mean value between 126332.2 and 148379 dollars.
P(126332.2 < ¯xx¯ < 148379) = (Enter your answers as numbers accurate to 4 decimal places.)
Answers
2) Here ue need to 0mpute p(126332.219ig to reeas paadi04 2-alue are 1262.2-131o00 21000 /16 14R073-121000 31000 /6 Z2 2-4 B.2 f126202.2 14339)126232.2-137000 10001-A6 1437 137000 3100046 PLZ2.2)- PC(Z) 17 from etandard nokma table 4g& 148319)01 4 P 126332.24let -Mean anndal salasay after qraduafion guduales 10 years A-13+000 De76 + 631000 PC1263322XL148319 The contesspandieg computed aree Z-vaiue needed to be 0.244 126332 2-1B1000 21000 0.3611 148379-137000 2- 31000 P/12632.211000 X- P(126332.2414373 17 31000 14&379-13700o 3100 0 P(Z40.363)- PCZ0.3441 0.6432-0.354 fram standard narmal table r(126832.24 148379012118
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