Answer:
A.
Step-by-step explanation:
Perpendicular lines
Answer:
There was no error
Step-by-step explanation:
There are two types of statistical errors, the type 1 error and the type 2 error. In this case we refute the null hypothesis when the hypothesis is, in fact, false, because the mean process is 9 days instead of 7. Therefore we made no errors.
If the null hypothesis were True, a type 1 error would have ocurred. If the null hypothesis were false and we didnt refute it, then a type 2 error would have ocurred.
Answer:
x³ + 3x² - 46
Step-by-step explanation:
note that (f + g)(x) = f(x) + g(x)
f(x) + g(x)
= x² - 36 + x³ + 2x² - 10 ← collect like terms
= x³ + 3x² - 46
Based on the key the number under the stem column is a whole number mile and the number under the leaf column is a decimal ( partial mile)
so for students that ran more than 6 miles, count the numbers under the leaf that are next to 6 or higher
, there is 3 next to 6, 2 next to 7 and 2 next to 8
so there were 3 +2 +2 = 7 students that ran more than 6 miles
shortest run: 4.3
