We have been given that in ΔSTU, the measure of ∠U=90°, ST = 9.7 feet, and US = 4 feet. We are asked to find the measure of ∠T to the nearest degree.
First of all, we will draw a right triangle using our given information.
We can see that US is opposite to angle T and ST is hypotenuse of right triangle.
We know that sine relates opposite side of right triangle to hypotenuse.



Now we will use arcsin to solve for measure of angle T as:


Upon rounding to nearest degree, we will get:

Therefore, the measure of angle T is approximately 24 degrees.
<u>(a) Construct a 95% confidence interval for the difference between the average number of intrusion attempts per day before and after the change of firewall setting (assume equal variance)</u>
Subtract 7.8 points by 4.8 and you get 3.4 !!
P(x) = 18x - (5x + 20)
p(x) = 18x - 5x - 20
p(x) = 13x - 20 <===
Work shown above! y = 148