1) Before an exam, a student has only studied 20 of the 28 topics corresponding to...

1) Before an exam, a student has only studied 20 of the 28 topics corresponding to the subject of the exam. This is done by randomly extracting two subjects and leaving the student to choose one of the two to be examined. Find the probability that the student can choose one of the topics studied in the exam.

2)

The compressive strength of a series of cement samples can be modeled with a normal distribution with an average of 6000 kilograms per square centimeter and a standard deviation of 100 kilograms per square centimeter.

A) What is the value of the resistance that exceeds 95% of the samples?

Expert Solution

orchestra answered 2 years ago

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Each student needs to submit a pdf file in ONLY ONE of the following topics: 1....

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