SOLUTION: what is the probability that the mean MPG for a random sample of 25 light vehicles is between 20 and 25? under 20?
under 20 --> 21-20/2.9 = .34
between 20 and 25 --> 21-25/2
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-> SOLUTION: what is the probability that the mean MPG for a random sample of 25 light vehicles is between 20 and 25? under 20?
under 20 --> 21-20/2.9 = .34
between 20 and 25 --> 21-25/2
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Question 417634: what is the probability that the mean MPG for a random sample of 25 light vehicles is between 20 and 25? under 20?
under 20 --> 21-20/2.9 = .34
between 20 and 25 --> 21-25/2.9 = -1.38
25-20/2.9 = 1.72 in the z table 1.72 = .9572
I'm not sure what else to do.
Thank you. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! what is the probability that the mean MPG for a random sample of 25 light vehicles is between 20 and 25? under 20?
under 20 --> 21-20/2.9 = .34
between 20 and 25 --> 21-25/2.9 = -1.38
25-20/2.9 = 1.72 in the z table 1.72 = .9572
I'm not sure what else to do.
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I can't figure out your posted data.
You have z-scores but you are using different mean values.
What's going on?
Cheers,
Stan H.
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