Daily low temperatures in Columbus, OH in January 2014 were approximately normally distributed with a mean of 15.45 and a standa
1 answer:
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Answer:
We reject the null hypothesis.
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 71
Alpha, α = 0.08
Population variance is known.
First, we design the null and the alternate hypothesis
We use One-tailed z test to perform this hypothesis.
Formula:
a) We calculate the z-critical with the help of z-table.
b)
Since,
We fail to accept the null hypothesis and reject the null hypothesis and accept the alternate hypothesis.
Answer:
761 cubic feet.
Step-by-step explanation:
Your neighbor also has a swimming pool of the same shape as yours, but it is 75% the depth.
Then, if my swimming pool's depth is H, then my neighbor's pool will have depth .
So, if my swimming pool has dimensions L ft. by W ft. by H ft., then my neighbor's pool will have dimensions L ft by W ft. by 0.75H ft.
Now, given that the volume of my pool is 1015 cubic ft.
So, LWH = 1015 ......... (1)
Now, my neighbor's pool has volume V = 0.75LWH = 0.75(1015) = 761.25 cubic ft ≈ 761 cubic ft. {Round to the nearest whole number} (Answer)
{From equation (1)}