It is (2/3d)^3
Make sure the exponent is on the outside. This is because you are raising 2/3d. Not just D
I hope this helps you
w +3 < -8.2
w < -16-3
w < -19
Oh gosh oh I thought had the president of the
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