Question

You are worried that the next metal part you just ordered from a supplier will not fit. It must be between 39 and 40 cm long. The mean for the last 50 you received was 39.5 cm long. The population standard deviation is 0.5 cm. Find the 95% two-sided prediction interval for the next one you will receive.

	a.	(38.31<X0<40.69)
	b.	(38.29<X0<40.71)
	c.	(38.51< X0<40.49)
	d.	(38.09<µ<40.51)

Answer 1

thank you