Listed below are the amounts of mercury (in parts per million or ppm) found in tuna sushi sampled at 7 different stores in New Y
ork City. Construct a 95% confidence interval estimate of the standard deviation of the amounts of mercury in the population (tuna sushi).
1 answer:
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Answer:
B. x = 7, y = 4√2
Step-by-step explanation:
Drop a vertical from the upper left corner
This creates a rectangle and a 45-45-90 triangle
The bottom of the rectangle is 3
The legs of the triangle are 4
Therefor
x = 4 + 3
x = 7
For a 45-45-90 triangle
the hypotenuse = leg * √2
y = 4√2
U just have to find original amount (100%) and that is the amount he made last week.
