Answer:
8400 POUNDS.
Step-by-step explanation:
Answer:
B) At alpha = 0.01, there is insufficient evidence to conclude the true mean wind speed at the site exceeds 25 mph.
Step-by-step explanation:
P-value of the test:
The p-value of the test is the probability of finding a sample mean above 25.
We are using the t-distribution, with test statistic t = 1.25 and 43 - 1 = 42 degrees of freedom. This probability is a right-tailed test.
With the help of a calculator, this p-value is of 0.1091.
Since the p-value of the test is 0.1091 > 0.01, at there is insufficient evidence to conclude the true mean wind speed at the site exceeds 25 mph, and the correct answer is given by option B.
Solve:
Recall that cot(x) really is just 1/tan(x).
Thus, we can say:
Isolate the variable to solve directly for theta.
However, that's not the only solution:
For instance,
is another solution.
In fact, there are an infinite amount of solutions we can have that will satisfy this equation because of the fact that the tangent wave is periodic every π.
Thus, we can say for every π periods, we will have a solution.
Or:
, where
By substituting Θ, we can say that the solutions are:
, where
Answer:
7 inches
Step-by-step explanation: Every 1 inch = 50 miles. So every 50 miles of tunnel is 1 inch in a scale drawing. 350miles/50 miles=7 inches.
The scale drawing is 7 inches.