Answer:
0.731 < p < 0.775
Step-by-step explanation:
We have a sample proportion of 753/1000 = 0.753
We need to construct a 90% confidence interval for the population proportion. Since n > 30, we use the corresponding z-value of 1.645.
See attached photo for the formulas and construction of the confidence interval.
Ive done this problem but with a different velocity. Just plug in the numbers/information they give you into the equation and solve for t. The value for t will be your answer
Answer:
number of feet away from the sprinkler = 12 ft
Step-by-step explanation:
The number of feet away which the sprinkler is spreading water is the radius of the circle formed.
area of a circle = πr²
where
r = radius
area of the circle formed = 452.16 ft²
area of a circle = πr²
area of a circle = 3.14 × r²
452.16 = 3.14r²
divide both sides by 3.14
r² = 452.16/3.14
r² = 144
square root both sides
r = √144
r = 12 ft
number of feet away from the sprinkler = 12 ft
115% is the same as 1.15
some number = x
115% of some number is 120
1.15 of x is 120
1.15 * x = 120
x = 104.3478
x ≈ 104.3
Hope this helps! :)
Answer:
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Step-by-step explanation: