Answer: C, -4
Step-by-step explanation:
Sample response:
points of intersection represent when the price and profit are the same for each type of ball.
The intersection points are approximately
(8.16, 236.49) and (1.84, –16.49).
When the store charges $8.16 for each type of ball, they make the same profit from each ball, approximately $236.49.
Charging $1.88 provides no profit for either type of ball.
Answer:
See below
Step-by-step explanation:
<u>Check One Sample Z-Interval Conditions</u>
Simple Random Sample? √
np≥10? √
n(1-p)≥10? √
<u>One-Sample Z-Interval Information</u>
- Formula -->
- Sample Proportion -->
- Critical Value -->
(for a 85% confidence level) - Sample Size -->
- Margin of Error (MOE) -->
<u>Problem 1</u>
As stated previously, Anas should use the critical value to construct the 85% confidence interval
<u>Problem 2</u>
Given our formula for the margin of error (MOE), the value is 
<u>Problem 3</u>
The 85% confidence interval would be 
, which means that we are 85% confident that the true proportion of people that clicked on the advertisement is between 0.1786 (~45 people) and 0.2534 (~63 people)
<u>Problem 4</u>
Increasing the sample size to 
is going to decrease the margin of error because it is a closer representation of the population, but, alas, requires more time, energy, and resources to observe.
Answer:
(m, 3m - 19)
Step-by-step explanation:
Step 1: Define
f(x) = 3x - 19
f(m) = x = m
Step 2: Substitute and Evaluate
f(m) = 3(m) - 19
f(m) = 3m - 19
Step 3: Write as ordered pair
(m, 3m - 19)
6mn= 216
m+5n= 29
n/2-1= 1
m^2/(n+5)= 9
