By answering the question and reading the question
The confidence interval is given by the formula:
m +/- z·(σ/√n)
First, compute the mean:
m = (<span>15.8 + 15.6 + 15.1 + 15.2 + 15.1 + 15.5 + 15.9 + 15.5) / 8
= 15.463
Then, compute the standard deviation:
</span>σ = √[∑(v - m)²/n]
= 0.287
The z-score for a 95% confidence interval is z = 1.96.
Now you can calculate:
m + z·(σ/√n) = 15.463 + 1.96·(0.287/√8)
= 15.463 + 0.199
= 15.662
m - z·(σ/√n) = 15.463 - 1.96·(0.287/√8)
= 15.463 - 0.199
= 15.264
Therefore the confidence interval is (15.264, <span>15.662) and the correct answer is E) none of the above.</span>
Answer:
The area is:

Step-by-step explanation:
Area of this figure is simply the product of the base and the height, as it just happens to be a slanted or inclined rectangle.
Therefore:

Answer:
Total probability value is 1
P(green) = 0.2 , P(brown) = 0.54
Given P(red) = P(yellow) = x
Total Probability = P(green) + P(Brown) + x + x
1 = 0.2 + 0.54 + 2x
1 - 0.74 = 2x
x = 0.13
P(red) = P(yellow) = 0.13
Now number of times it landed on each color :

Since P(red) = P(yellow) , the number of time on yellow and red are same.



Answer :
Red 156
Green 240
Brown 648
Yellow 156