Answer:
a. 0.06166
b. 0.9447
Step-by-step explanation:
15 percent is the probability it will rain on any given day. P = 0.15
lets define x as the number of days it will rain in one week.
this solution will follow a binomial distribution.
p(X=x) = nCxP^x(1-p)^x
n = 7
x = 3
1-p = 0.85
p =0.15
inserting these values into the formula
p(X=3)=7C3(0.15)^3(0.85)^4
= 7!/4!3! × 0.003375 × 0.5220
= 35 × 0.003375 × 0.5220
= 0.06166
sd = √np(1-p)
= √7 × 0.15(0.85)
= 0.9447
Answer:
I think it would be 6. But im not 100% sure
Step-by-step explanation:
It is because they will always be divisible by 5.
<h3>hello!</h3>
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First of all, let the number be u.
The product of 7 and u means you should multiply 7 times u:

Now, subtract 4:

This expression equals 17:


[Now, let's Find the Value of u]
First, add 4 to both sides:

Now, divide both sides by 7:

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<h3>notes:-</h3>
Hope everything is clear; if you need any clarification /explanation, kindly let me know, and I will comment and/or edit my answer :)