Question

Please show me how to calculate part C on the TI calculator

enmcescs 1-Binoncds Jec2< otmalcdfLE 7. Mopeds (small motorcycles with an engine capacity below 50 cm2) are very popular in Europe because of their mobility, ease of operation, and low cost. Suppose the maximum speed of a moped is normally Cistributed with mean value 46.8 km/h and standard deviation 1.75 km/h. Consider randomly selecting a single such moped. (a) What is the probability that maximum speed is at most 49 km/h? (Round your answer to four decimal places.) ANS= 0.8956 nomalc2 (1-257 946.8,17 CX48 X-u P(2s57 (b) What is the probability that maximum speed is at least 48 km/h? (Round your answer to four decimal places.) ANS = 0.2464 nemalcdt C68218, 46.8,125)246 1-PC2685) 48)- 1-PC (c) What is the probability that maximum speed differs from the mean value by at most 1.5 standard deviations? (Round your answer to four decimal places.) ANS 0.8664 PL -1521 8. Suppose that 14% of all steel shafts produced by a certain process are nonconforming but can be reworked (rather than having to be scrapped). Consider a random sample of 200 shafts, and let X denote the number among these that are nonconforming and can be reworked. (Round your answers to four decimal places.)

Answer 1

In TI calculator it will be

normalcdf(-1.5,1.5,0,1). 

(C) Find P(|X – 4|51.50). P(|X – 4/51.50) = P(-1.55471 51.5) = P(-1.55Z 51.5) =0(1.5)-0(-1.5) = 0.9332-0.0668 = 0.8664