The Die is Cast When rolling a single die, what is the probability that the outc

Question

The Die is Cast When rolling a single die, what is the probability that the outcome is 7? Ans____ Harry Potter books There are seven books in the Harry Potter. If the books are read in a randomly selected order, what is the probability that they are used in the order that they were written? Binomial Distribution: Find the mean mu and standard deviation sigma. Gender Selection. In an analysis of preliminary test results from the XSORT gender-selection method, 14 babies are born and it is assumed that 50% of babies are girls, so n = 14 and p = 0.5. Ans____ Find the area of the shaded area Ans____

Explanation / Answer

Q3.
Mean ( np ) =14 * 0.5 = 7
Standard Deviation ( npq )= 14*0.5*0.5 = 1.8708
Q4.
Mean ( u ) =0
Standard Deviation ( sd )=1
Normal Distribution = Z= X- u / sd ~ N(0,1)                  
P(X > -1.04) = (-1.04-0)/1
= -1.04/1 = -1.04
= P ( Z >-1.04) From Standard Normal Table
= 0.8508                  
Q5.
P(X < 0.8907) = (0.8907-0)/1
= 0.8907/1= 0.8907
= P ( Z <0.8907) From Standard Normal Table
= 0.8135  

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