Answer:
a(n) = 3 . 11^(n-1)
Step-by-step explanation:
- Common ratio: r = a3 / a2 = 363 / 33 = 11
- The first term of that geometric sequence:
a1 = a2 / r = 33/11 = 3
- Formula for this sequence:
a(n) = a1 . r^ (n-1) = 3 . 11^(n-1)
--> Answer D
Answer & Step-by-step explanation:
First, we must know the distance formula.
Know, we plug in our numbers for x1, y1, x2, and y2.
So, the distance between C and D is 11.7 units.
Answer:
We are 99% confident that about (31.6 to 52.38) % of population would attend the Winter Formal.
Step-by-step explanation:
Given:
- The sample proportion p = 63 out of 150
- The sample size n = 150
Find:
- The required confidence interval and its interpretation.
Solution:
- To develop CI at 99%, we need Z-score value at significance level a = 1 - CI.
a = 1 - 0.99 = 0.01
CI: Z_a/2 = Z_0.005 = 2.58
-The formula for developing the confidence interval for any proportion p is given by:
- We can now determine the 99% confidence interval for p using above expression.
p = 63 / 150 = 0.42
1-p = 0.58
- We are 99% confident that about (31.6 to 52.38) % of population would attend the Winter Formal.