3-3*2+3*4-3*8+3*16 is tge answer
4 + 12 + 36... etc
is a sum that can be rewritten in form
4 ( 1, 3, 9, 27, 81, etc) this can further be written in sigma notation:
4 Sigma [ 3 ^ ( i - 1)]
The sum of the indefinite summation will be the limit as i goes to infinity = infinity
<h3>Answer:
1416 </h3>
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Explanation:
Usually a 95% level is standard for many stats problems like this. Unfortunately a 94% confidence level is a bit unusual. But you can use an inverse z calculator to determine that the z critical value is approximately z = 1.881
The error we want is E = 0.025 or smaller.
We don't know the sample proportion phat, but we can make the conservative estimate of phat = 0.5
Plug these values into the min sample size formula below
This formula applies to proportions (instead of the mean).
n = phat*(1-phat)*(z/E)^2
n = 0.5*(1-0.5)*(1.881/0.025)^2
n = 1415.2644 approximately
n = 1416 is the final answer
Always round UP to the nearest whole number when it comes to min sample size problems like this.
Side note: if you used z = 1.88, then it would lead to n = 1414. So it depends on how accurate of a z value you use that determines the final answer. Luckily, 1414 is fairly close to 1416. I'd stick with 1416.
100.56 inches squared. we find the surface area of the chocolate cylinder (150.8) and the surface area of a 2d circle with a 4 inch radius (50.24) and subtract 150.8 - 50.24 = 100.56
Lower quartile (xL): 68
Upper quartile (xU): 88
Interquartile range (xU-xL): 20