Which is true about the polynomial –8m3 + 11m?
2 answers:
Answer:
it is a binomial with degree of 3
Step-by-step explanation:
Degree is the highest degree of all the terms. Degree of each term can be found by adding the exponent of all the variables .
Here we have 2 terms it is a binomial
-8m^3 have exponent 3 so degree =3
+11m or 11m^1 are same
degree =1
Highest degree is 3
So it is a binomial with degree of 3
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Answer:
0.0903
Step-by-step explanation:
Given that :
The mean = 1450
The standard deviation = 220
sample mean = 1560
P(X> 1560) = P(Z > 0.5)
P(X> 1560) = 1 - P(Z < 0.5)
From the z tables;
P(X> 1560) = 1 - 0.6915
P(X> 1560) = 0.3085
Let consider the given number of weeks = 52
Mean = np = 52 × 0.3085 = 16.042
The standard deviation =
The standard deviation =
The standard deviation = 3.3306
Let Y be a random variable that proceeds in a binomial distribution, which denotes the number of weeks in a year that exceeds $1560.
Then;
Pr ( Y > 20) = P( z > 20)
From z tables
P(Y > 20) 0.0903