Answer:
I would say C
Step-by-step explanation:
I said C because when people look for information they look at different sources instead of just one.
Answer:
CI = 21 ± 0.365
Step-by-step explanation:
The confidence interval is:
CI = x ± SE * CV
where x is the sample mean, SE is the standard error, and CV is the critical value (either t score or z score).
Here, x = 21.
The standard error for a sample mean is:
SE = σ / √n
SE = 3.2 / √510
SE = 0.142
The critical value is looked up in a table or found with a calculator. But first, we must find the alpha level and the critical probability.
α = 1 - 0.99 = 0.01
p* = 1 - (α/2) = 1 - (0.01/2) = 0.995
Using a calculator or a z-score table:
P(x<z) = 0.995
z = 2.576
Therefore:
CI = 21 ± 0.142 × 2.576
CI = 21 ± 0.365
Round as needed.
Answer:
Step-by-step explanation: 1,860 Seconds Is Equal To 31 Minutes Hope It Helped
Answer:
hope so
Step-by-step explanation:
20+2x-8
12+2x
hope this helps
srry if wrong
Answer:
A delivery truck, Mr. Jones drives 290400 feet per hour.
Step-by-step explanation:
To Determine:
How many feet per hour is Mr. Jones driving?
Solution Steps:
- A delivery truck travels 55 miles per hour.
As we know that
- Total number of feet in one mile = 5,280
so
Total number of feet in 55 miles = 5,280 × 55 = 290400
Thus
A delivery truck travels 290400 feet per hour.
Therefore, a delivery truck, Mr. Jones drives 290400 feet per hour.
