b.) At Big State University, 70% of incoming freshmen will graduate by the end of their first fouryears. 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 (withnumbers) and the answer.)ii.) What is the probability that at least 880 graduate in four years? (Give the excel formula (withnumbers) and the answer.)c.) Suppose that the lifetimes of a certain type of light bulb are normally distributed with a mean of1100 hours and a standard deviation of 150 hours. Find the probability that a light bulb would lasti) 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.

(b) (i) Obtain the probability of having exactly 850 graduate in four years. The probability…

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)

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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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

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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