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The percentage probability that a student will score more than 90 marks in an accounting exam is 2.28%. The marks scored from the accounting exam follow a standard normal distribution with a mean mark of 70. What is the standard deviation for the distribution?
There is no point in setting me a test question and expecting me to provide you with an answer! You must have an answer in the same book in which you found the question, so ask about whatever it is in the answer that you do not understand and then I will explain.
I assume that you have watched my free lectures on the normal distribution? The lectures are a complete free course for Paper MA and cover everything needed to be able to pass the exam well.
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