7 Hours on Average
add up all the hours and you get 35
then divide 35 by the number of given hours which is 5
35/5 = 7
so the average amount of hours slept was 7
Answer: S = √(r2 + h2)
Step-by-step explanation:
It's not height. It's called slant height in this case. Represented by the symbol "S".
Answer:
829
Step-by-step explanation:
Data provided in the question:
margin of error of E = $4
Confidence level = 90%
Standard deviation = $70
Now,
Sample size, n=
for 90% confidence level, z value = 1.645 [from standard z-table]
Therefore,
n =
= 28.7875²
= 828.72 ≈ 829
Hence,
The correct answer is option (D) 829