Question: 2 math question Question 3: Let Y be the mean of a random sample of size 50 drawn from a population with mean 112 and

2 math question Question 3: Let Y be the mean of

2 math question

112 and standard deviation 40. (15} a) Find the mean and standard

Question 3: Let Y be the mean of a random sample of size 50 drawn from a population with mean 112 and standard deviation 40. (15} a) Find the mean and standard deviation of Y b} Find the probability that "i\" assumes a valve between 110 and 114 c) Find the probability that '5\" assumes a valve greater than 113. A computer company samples demand during lead time over 25 time periods: (20) 235 374 309 499 253 421 361 514 462 369 394 439 348 344 330 261 374 302 466 535 336 316 296 332 334 It is known that the standard deviation of demand over lead time is 75 computers. We want to estimate the mean demand over lead time with 95% condence in order to set inventory levels

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