Probability question in stats
Favorites|Homepage
Subscriptions | sitemap
HOME > > Probability question in stats

Probability question in stats

[From: ] [author: ] [Date: 12-04-28] [Hit: ]
(a) Write the event the student chosen has a score of 10 or lower in terms of X.(b) Find the probability of an event which represents the student chosen has a score of 10 or lower.......
The Normal distribution with mean μ = 6.8 and standard deviation σ = 1.6 is a good description of the Iowa Test vocabulary scores of seventh grade students in Gary, Indiana. This is a continuous probability model for the score of a randomly chosen student.

(a) Write the event "the student chosen has a score of 10 or lower" in terms of X.


(b) Find the probability of an event which represents "the student chosen has a score of 10 or lower".

-
a) x <= 10

b) P(x <= 10) = P(z < (10 -6.8)/1.6) = P(z < 2) = 0.9772
1
keywords: stats,question,in,Probability,Probability question in stats
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .