Enter all answers to the nearest tenth. A day care program has an average daily expense of $75.00. The standard deviation is $5.00. The owner takes a sample of 64 bills. What is the probability the mean of his sample will be between $70.00 and $80.00? Step 1. Calculate a z-score for $70.00 - Step 2. Give the probability for step 1. % Step 3. Calculate the z-score for $80.00 + Step 4. Give the probability for step 3. % Step 5. Add the probabilities from steps 2&4. %

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