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Exercise 1: The average weight of the students in a certain school is 45 kg and the standard deviation is 7. Consider that the weight of the students is normally distributed, what is the probability that a student's weight is:

a. less than 36 kg?
b. between 42 to 52 kg?
c. more than 50 kg?
d. About how many students weigh less than 36 kg if the total number of students is 1800?

Exercise 2: The scores of the students in the exam follows a normal distribution. The mean score is 88 with 5 as the standard deviation. Find the score of the students who belong to the

a. 93th percentile.
b. 6oth percentile.
c. 25th percentile.​


Sagot :

Step-by-step explanation:

hope it helps po love lots

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