I got C for 6 & 7. I haven't done this in a while so I don't know 8 & 9. I hope I helped!
Answer:

Step-by-step explanation:
Since the sample size is quite large, we can use the z-distribution.
The margin of error is given by

Where n is the sample size, s is the sample standard deviation and
is the z-score corresponding to a 90% confidence level.
The z-score corresponding to a 90% confidence level is
Significance level = α = 1 - 0.90= 0.10/2 = 0.05
From the z-table at α = 0.05
z-score = 1.645

Therefore, the margin of error is 0.776.
Answer:
8.5 or 8½
Step-by-step explanation:
Arranged numbers in ascending order
2, 6, 8, 8, 9, 10, 12, 14
Median = middle number i. e 8 and 9
Therefore median = 8 + 9 divided by 2
= 17 divided 2
= 8.5
Answers = 8.5 or 8½
Step-by-step explanation:
this is your answer...,..
Answer:
Step-by-step explanation:
Population= 280000 people
Population growth rate= 8.5%
Population growth in a year=
{(100+8.5)÷100} × 280000 =303800 people
Pop growth in 8 years =
303800×8=
2,430,400 people