Answer:
A. x > 13
Step-by-step explanation:
x-3>10
x>10+3
x>13
Find a common denominator and then add.
3/5=6/10
6/10+1/10=7/10
You would obviously only be able to create two sandwiches with the given information.
Since we are not given any information about the proportion, we will assume the sample proportion to be 0.50
so,
p = 0.50
The Error is 10% percentage point. This means that on either side of the population proportion the error is 5% so E = 0.05
z = 1.645 (Z value for 90% confidence interval)
The margin of error for population proportion is calculated as:
This means 271 students should be included in the sample