Normal Distribution question about pulse rates?

👨🏻‍🏫 學術台數學

[匿名]

2016-07-30 4:14 am

更新1:

the mean pulse rate is 72 beats and standard deviation is 10.

更新2:

what's the probability that someone has a pulse over 80? Also what is the probability that a sample of 19 adults will have a mean score over 80? Thanks so much

回答 (1)

Sqdancefan

2016-07-30 4:25 am

a) normalcdf(80,200,72,10) = .2118553986

b) normalcdf(80,200,72,10/√(19)) = 2.441268856ᴱ-4
.. Of course ᴱ-4 means *10^-4.

參考: TI-83 calculator

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