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b.) At Big State University, 70% of incoming freshmen will graduate by the end of their first four years. If this year's incoming class consists of 1200 freshmen, i,) What is the probability that exactly 850 graduate in four years? (Give the excel formula (with numbers) and the answer.) ii.) What is the probability that at least 880 graduate in four years? (Give the excel formula (with numbers) and the answer.)

b.) At Big State University, 70% of incoming freshmen will graduate by the end of their first four years. If this year's incoming class consists of 1200 freshmen, i,) What is the probability that exactly 850 graduate in four years? (Give the excel formula (with numbers) and the answer.) ii.) What is the probability that at least 880 graduate in four years? (Give the excel formula (with numbers) and the answer.)

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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b.) At Big State University, 70% of incoming freshmen will graduate by the end of their first four years. If this year's incoming class consists of 1200 freshmen, i.) What is the probability that exactly 850 graduate in four years? (Give the excel formula (with numbers) and the answer.) ii.) What is the probability that at least 880 graduate in four years? (Give the excel formula (with numbers) and the answer.) c.) Suppose that the lifetimes of a certain type of light bulb are normally distributed with a mean of 1100 hours and a standard deviation of 150 hours. Find the probability that a light bulb would last i) At most 1260 hours? (Give the excel formula (with numbers) and the final answer.) ii.) Between 1000 and 1240 hours? (Give the excel formula (with numbers) and the final answer.
Transcribed Image Text:b.) At Big State University, 70% of incoming freshmen will graduate by the end of their first four years. If this year's incoming class consists of 1200 freshmen, i.) What is the probability that exactly 850 graduate in four years? (Give the excel formula (with numbers) and the answer.) ii.) What is the probability that at least 880 graduate in four years? (Give the excel formula (with numbers) and the answer.) c.) Suppose that the lifetimes of a certain type of light bulb are normally distributed with a mean of 1100 hours and a standard deviation of 150 hours. Find the probability that a light bulb would last i) At most 1260 hours? (Give the excel formula (with numbers) and the final answer.) ii.) Between 1000 and 1240 hours? (Give the excel formula (with numbers) and the final answer.
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