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.
The area of sector is calculated by the product of area of the circle and the sector angle. It is expressed as follows:
Area = πr² (α/360)
Area = π(8)²(45/360)
Area = 8π in²
Hope this answers the question. Have a nice day. Feel free to ask more questions.
Hello there! you can use the expression 
!
To find slope, subtract the y values over the x values.
In this case:
2 - - 1 / - 3 - 7
3 / -10
So, -3/10 would be the slope of these points.
Hope this helps, have a great day!
$25 per item sold + $100 per week = 700 total goal in 1 week
X is our items sold variable. We only use 100 since our goal is for only one week.
25x + 100 = 700
Subtract 100 from each side.
25x = 600
Divide by 25.
x = 24
HOPE THIS HELPS!!
There are 36^7 different passwords available, incluiding ones that have repeated characters, are sequential characters, or are all the same letter or digit. Of these 26^7 are invalid. the probability of obtaining a valid password is
... 1 - 26^7/36^7 ≈ 0.8975
