The probability that a data value is between 54 and 66 is 81.9%
z score is used to determine by how many standard deviations the raw score is above or below the mean.
The z score is given by:
Given that μ = 62, σ = 4
For x = 54:
For x = 66:
P(54 < x < 66) = P(-2 < z < 1) = P(z < 1) - P(z < -2) = 0.8413 - 0.0228 = 81.9%
The probability that a data value is between 54 and 66 is 81.9%
Find out more on z score at: brainly.com/question/25638875
4.77x10= 47.7/9 = 5.30. 1 pound cost $5.30
Answer:
You can do it! Sorry i can't help because your on a different level. Try your best!
Step-by-step explanation:
It would take 6
hours or 6.25 hours if John uses the 100 watt pump.