Answer:
Kindly check explanation
Step-by-step explanation:
To construct confidence interval for difference in proportion ; the following conditions must be met :
1.) The selected samples must have been randomly chosen or selected from a larger population. This is essential in other to eliminate bias.
Each group of samples must be independently chosen. That is, the samples of bug customers chosen must be independent of the sample of small customers selected.
The population from which the samples are drawn must be considerably larger than the sample size. Sample size, n should be ≤ 10% of the population size.
p1 = 160 / 200 = 0.8 ; (1 - p1) = 0.2
p2 = 120 / 300 = 0.4 ; (1 - p2) = 0.6
(p1 - p2) ± Zcritical * sqrt[(p1(1 - p1) /n1) + (p2(1 - p2) / n2)]
1 large drink cost $1.65
Work: 16.95 - 12.00 = 4.95 <- Cost of drinks
Then 4.95 divided by 3 = 1.65
So it is $1.65 per large drink.
Hope I was able to help!
Answer:2 3/8
Step-by-step explanation:
You divide the area which is 4 3/4 by the width which is 2
You should get the answer of 2 3/8
Answer:
2nd choice
Step-by-step explanation:
