Historically, there is a 40% chance of having clear sunny skies in seattle in july. let's assume that each day is independent from any other day (although this is not really true under this assumption, if you will spend 18 days in seattle in july, what's the probability of having clear sunny skies on at least 13 of those days? (a) solve this exactly (b) solve this by approximating using a normal distribution. 8.

a)  0.0058

b) 0.0026

Step-by-step explanation:

Given : The probability of having clear sunny skies in Seattle in July : p= 0.40

The number of days spent in Seattle  in July: n= 18

a) Using, Binomial probability formula :

The probability of having clear sunny skies on at least 13 of those days:-

b) On converting binomial to normal distribution, we have

Let x be the number of days having clear sunny skies in Seattle in July.

Then, using we have

P-value =

in the math equation 8 x 7 = 56, the 8 and the 7 are both factors of 56, since in this lesson we will use square tiles to figure out the factors of a whole find as many different arrays as you can, but follow one important rule: all the rows must have the i can make two rows of nine, so 2 and 9 are both factors of 18.

step-by-step explanation: