can anyone help me on this math problem?

An automotive repair shop has determined that the average service time on an automobile is 2 hrs with a standard deviation of 32 minutes. A random sample of 64 service records is selected. What is the probability that this sample will have a mean service time that (a) exceeds 114 minutes? (b) fails to attain 100 minutes? (c) ten percent of all sample means from this population will exceed what value?

Question concerns binomial distribution approximated as normal. Check with a specialized site below and they will be able to help

D & R Autoworks – Complete Auto Care – Highland Park, IL

Ceaseless Service $16.99 Summit Records:1027

Love Death & Customer Service $14.99 Bad Art Records:14300

Music For The Funeral Service $17.99 Priory Records:3000

Music For The Funeral Service – Hymns, Psalms, Anthems, Etc $16.99 Priory Records:3000

Bloch: Sacred Service / Simon, Berkman, London So $12.99 Chandos Records:10288

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