Answer:
The probability that the sample proportion is between 0.35 and 0.5 is 0.7895
Step-by-step explanation:
To calculate the probability that the sample proportion is between 0.35 and 0.5 we need to know the z-scores of the sample proportions 0.35 and 0.5.
z-score of the sample proportion is calculated as
z=
where
- p(s) is the sample proportion of first time customers
- p is the proportion of first time customers based on historical data
For the sample proportion 0.35:
z(0.35)=
≈ -1.035
For the sample proportion 0.5:
z(0.5)=
≈ 1.553
The probabilities for z of being smaller than these z-scores are:
P(z<z(0.35))= 0.1503
P(z<z(0.5))= 0.9398
Then the probability that the sample proportion is between 0.35 and 0.5 is
P(z(0.35)<z<z(0.5))= 0.9398 - 0.1503 =0.7895
Answer:I think the answer is 6x because
18= 6x3
42= 6x7
30= 6x5
Step-by-step explanation:
18= 6x3
42= 6x7
30= 6x5 And 6x(3x+7x^3+5x^4) it became 18x^2+42x^4+30x^5
Answer: =2πr⋅(x360∘)
Step-by-step explanation:
2x+2(3x-2)+4-2(3x+8)
According to PEMDAS Parentheses Exponents Multiplication Division Addition Subtract, you must do the numbers in the parentheses.
2x+2(3x-2)+4-2(3x+8)
| |
2x+6-4+4-6x+16
Since there are no exponents, multiplication, and addition we do subtracting and adding. Which ever comes first in the equation.
2x+6-4+4-6x+16
Subtract the variables.
2x -6x = -4x
-4x+6-4+4+16
We cannot add variables and numbers together.
6-4=2
2+4=6
6+16=22
22 is a positive number so the answer is...
-4x+22
Hope it helps!