Mathematics, 14.11.2019 03:31 jbearallen9557
Adelivery driver has an average daily gasoline expense of $55.00. the standard deviation is $10.00. the owner takes a sample of 54 bills. what is the probability the mean of his sample will be between $45.00 and $65.00?
step 1. calculate the z-score for $45.00.
step 2. give the probability for step 1. %
step 3. calculate the z-score for $65.00.
step 4. give the probability for step 3. %
step 5. add the probabilities from steps 1 & 3.
Answers: 1
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Adelivery driver has an average daily gasoline expense of $55.00. the standard deviation is $10.00....
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