Please help. Stuck on this question and don't understand how to solve it.
1 answer:
You might be interested in
Answer:
1 hour and 7 minutes
Step-by-step explanation:
- set up two equations:
=
- cross multiply: 4.42x =294
- solve for x: 294 ÷ 4.42 = 66.52 or 67 minutes
The question is asking for hours rather than minutes so...
- 1 hour is 60 minutes
67 min - 60 min = 7 min
Therefore, it would take 1 hour and 7 minutes to fill a 294-gallon hot tub.
Answer:
It would be correct to conclude that approximately 68 percent of the scores would fall between 85 and 115.
Step-by-step explanation:
We are given the following in the question:
Mean, μ = 100
Standard Deviation, σ = 15
We are given that the distribution is a bell shaped distribution that is a normal distribution.
Empirical rule
- Also known as 68-95-99.7 rule.
- It states that almost all data lies within three standard deviation of mean for a normal distribution.
- About 68% of data lies within one standard deviation of mean.
- About 95% of data lies within two standard deviation of mean.
- About 99.7% of data lies within three standard deviation of mean.
Thus, approximately 68% of data will lie within one standard deviation of mean.
Thus, it would be correct to conclude that approximately 68 percent of the scores would fall between 85 and 115.