Answer:
Step-by-step explanation:
1. A = P(1 + rt) is the formula for simple interest where A is the final amount, P is the principal amount, r is the interest rate (annual), and t is the number of time periods, or time in years (most often)
2. $25 of interest means your total amount will be $275, so A = $275. P = $250. r = .04. We are trying to find t.
3. $275 = $250(1+.04t)
4. (275/250)(1.04) = t t = 1.05
5. This means you will need to wait 2 years to earn $25 in interest
Answer:
Step-by-step explanation:
a) Sample statistics are used to estimate population value. Since 48% is a sample proportion, therefore, it is a sample statistic.
b) For 95% confidence level, z* = 1.96.
\hat{p}\pm z^* \sqrt{\frac{\hat{p}(1-\hat{p})}{n}}= 0.61\pm 0.61\sqrt{\frac{0.61(1-0.61)}{1578}}=0.61\pm 0.024 \ or (0.586, 0.634).
We are 95% confident that the true proportion of US residents who think marijuana should be made legal lies between 58.6% and 63.4%.
c)
\\np=1578(0.61)=962.58
\\n(1-p)=1578(1-0.61)=615.42
Since both np and n(1-p), are at least 10, the normal model is a good approximation for these data.
d) As the lower limit of confidence interval is less than 0.5, less than 50% population is also a plausible value of true proportion. This means the statement "Majority of Americans think marijuana should be legalized" is not justified.
Answer:
the answer would be -3/4
Step-by-step explanation:
(-4,3)(0,0)
y2-y1/x2-x1
0-3/0+4
-3/4
360 degrees / 18 sides = 20 degrees
the answer is 20 degrees
Solution-
Circumference of circle: 14 pi feet or 43.98.
But here answer is option A.
Answer:A
