Answer:
Step-by-step explanation:
Hello!
To evaluate the market for a new car charger, a market researcher surveyed 600 customers and found out that 73% of them own a car.
The parameter of interest is the population proportion and the study variable is "the number of customers that own a car out of 600".
Using the Central Limit Theorem you can approximate the distribution of the sampling proportion to normal:
p'≈N(p;
)
Where p' is the sample proportion
p is the population proportion and the mean of the distribution
is the variance of the distribution
Then de standard deviation of the samplig proportion distribution is 
You can estimate it using the sample proportion:
Using the same sample proportion but a sample size of n=150, the estimated standard deviation is:
I hope it helps!
Answer:7m^5 - 3m^3 + 9
Step-by-step explanation: You’d have to remove the brackets, but remember that the second has to have everything multiplied by -1, because there’s a minus sign in front of the second bracket. Then you’d group like terms, then add or subtract. Here’s the step by step
6m^5 + 3 - m^3 - 4m + m^5 - 2m^3 + 4m + 6
2. 6m^5 + m^5 - 2m^3 - m^3 + 4m - 4m + 6 + 3
Subtract or add what’s needed, which would be figures with the same variable and coefficient.
3. 7m^5 - 3m^3 + 9
After this, there’s nothing you can add, since the remaining figures don’t have the same variable.
Hope it’s clear and this wasn’t that long
Answer:
(-3, 3)
Step-by-step explanation:
The equation of line AB is
Since the y-intercept of the given line is (0,2), the line AB and the given line intersect at (0,2).
By definition, (0,2) is the midpoint of AA', where A' is the image of A after the reflection.
So, the coordinates of A' are (-3, 3)
that would be four hours.
12x3=36
1 hour 20 minutes x3= 4 hours
Answer:
what is the question
Step-by-step explanation:
