3x² - 4 → A
(f + g)(x) = f(x) + g(x) = 2x² + 3 + x² - 7 = 3x² - 4
Answer:
The Sample Size Need To be at least 114
Step-by-step explanation:
According to the Question,
- Given, A university dean of students wishes to estimate the average number of hours students spend doing homework per week. The standard deviation from a previous study is 6.2 hours.
The Maximum Error(E) is given as 1.5 hours and the standard deviation(σ) is 6.2 hours.
- Now, For 99% Confident the level of value α is 0.01.
α/2 = 0.01/2 ⇒ 0.005
- Thus, From The table, We get that the value of
is 2.58.
Hence, the sample size n can be found as
n = {
}²
n = {2.58 × 6.2}² / 1.5²
n = 113.72 .
So, The Sample Size Need To be at least 114.
Answer:
h = 6
Step-by-step explanation:
πr²h = 384π
Divide by pi on both sides.
r²h = 384
8²h = 384
64h = 384
Divide by 64 on both sides to isolate h.
h = 6
Answer:
red, green, blue, red green, blue green, red blue
Step-by-step explanation:
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