another Normal Distribution question

Hi

Can someone help me on the following question
The bonding strength of a drop of plastic glue is normally distributed with mean 103.7kg and standard deviation 8.1kg. A broken plastic strip is repaired with a drop of this glue and then subjected to a test load of 98kg.
->What is the probability that the bonding will fail?
->What would the test load have to be for the probability of bond failure to be 0.1?

P.S

Have you found a z-value yet?

Quote:

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Originally Posted by Paymemoney

Hi

Can someone help me on the following question
The bonding strength of a drop of plastic glue is normally distributed with mean 103.7kg and standard deviation 8.1kg. A broken plastic strip is repaired with a drop of this glue and then subjected to a test load of 98kg.
->What is the probability that the bonding will fail?
->What would the test load have to be for the probability of bond failure to be 0.1?

P.S

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These are routine questions, the sort found in every textbook that covers normal distribution. Have you reviewed the examples in your textbook and class notes?