Answer:
1. 83.6
2. 24
3. 95/2
4. 3
5. 30
6. 84.5
Step-by-step explanation:
3/16 of 224 is 42.
42 need to show up.
2/3 of the 42 people need to vote Yes to be approved.
2/3 of 42 is 28.
Answer:
2.083 < µ1 - µ2 < 5.917
Step-by-step explanation:
We will need to construct a 90% confidence interval for the difference of 2 means where the populations are normally distributed, and their variances are equal.
The calculations of the sample means and standard deviations are done for us.
Sample 1: Catalyst 1
n = 12, x = 85, s = 4
Sample 2: Catalyst 2
n = 10, x = 81, s = 5
See attached photo for the construction of the confidence interval...