Answer: a) Required minimum sample size= 219
b) Required minimum sample size= 271
Step-by-step explanation:
As per given , we have
Margin of error : E= 5% =0.05
Critical z-value for 90% confidence interval : 
a) Prior estimate of true proportion: p=28%=0.28
Formula to find the sample size :-
Required minimum sample size= 219
b) If no estimate of true proportion is given , then we assume p= 0.5
Formula to find the sample size :-
Required minimum sample size= 271
9 + h = 55/5
9 + h = 11
11 - 9 = h
2 = h
The opposite of addition is subtraction, Subtract 9 from both sides, The opposite of multiplication is division, divide both sides by 5 is the first step, and final answer is h = 2.
What is the answer to this wrok
The equation that represents the cost of membership is $100 + $40c
The cost of 1 year membership is $580.
The number of months you have paid for is 9 months.
<h3>What is the equation that represents the cost of the gym membership?</h3>
The cost of gym membership is the sum of the fixed cost and the variable cost. The fixed cost is the start-up fee while the variable cost is the cost per month.
The equation that represents the cost of the gym membership is: c = $100 + $40m
Where m represents the number of months
The cost of 1 year membership = $100 + $40(12)
$100 + $480 = $580
How many months would $460 cover = ($460 - $100) / 40 = 9 months
To learn more about fixed cost, please check: brainly.com/question/25879561
Answer:
5:1
Step-by-step explanation:
Divide each by 3.
