5. The average time it takes a group of Senior High School students to complete a certain examination is 48.2 minutes. The standard deviation is 4 minutes. Assume that the variable is normally distributed. A). What is the probability that a randomly selected Senior High School student will complete the examination in less than 45 minutes? B). If 30 randomly selected SHS student take the examination, what is the probability that the mean tıme it takes the group to complete the test will be more than 45 minutes? C). If 45 randomly selected SHS student take the examination, what is the probability that the mean time it takes the group to complete the test is between 49.1 and 51 minutes?
5. The average time it takes a group of Senior High School students to complete a certain examination is 48.2 minutes. The standard deviation is 4 minutes. Assume that the variable
is normally distributed.
A). What is the
complete the examination in less than 45 minutes?
B). If 30 randomly selected SHS student take the examination, what is the probability that the
C). If 45 randomly selected SHS student take the examination, what is the probability that the mean time it takes the group to complete the test is between 49.1 and 51 minutes?
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