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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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E Untitled document - G X A jearlmodcultstud.15.- I Attachment tHAIRapy x A Day 55/56 Sampling x ocs.google.com/document/d/19-Jgwlg AMYcsjrj9t4wHPPSHUzjVzsklkdK3ZL7n8/edit ES N Netflix h Hulu D Disney+ | * Lakewood E JSTOR A Tutoring okhin - Day 55 Sampling Distribution for Proportions Practice Insert Format Tools Add-ons Help Last edit was yesterday at 7:08 AM 100% - Normal text Arial 14 BIUA 三。 三三 ▼ Day 55 Sampling Distribution for Proportions Practice 1. Studies show that 27% of all students at Richardson Technical College smoke. Suppose we are interested in the proportion of the 85 students in the lunchroom cafeteria that smoke. (a) Is the normal approximation to the proportion =r/n valid? Explain. (b) What is the probability that the proportion of those in the cafeteria who smoke is at least one fourth? (c) What is the probability that the proportion of those in the cafeteria who smoke is no more than 30%? 2. According to Mr. Bock, 67% of all students at LHS play sports. Suppose we are interested in the proportion of the 100 students in the East Atrium play sports. (a) Is the normal approximation to the proportion p=r/n valid? Explain.
Transcribed Image Text:E Untitled document - G X A jearlmodcultstud.15.- I Attachment tHAIRapy x A Day 55/56 Sampling x ocs.google.com/document/d/19-Jgwlg AMYcsjrj9t4wHPPSHUzjVzsklkdK3ZL7n8/edit ES N Netflix h Hulu D Disney+ | * Lakewood E JSTOR A Tutoring okhin - Day 55 Sampling Distribution for Proportions Practice Insert Format Tools Add-ons Help Last edit was yesterday at 7:08 AM 100% - Normal text Arial 14 BIUA 三。 三三 ▼ Day 55 Sampling Distribution for Proportions Practice 1. Studies show that 27% of all students at Richardson Technical College smoke. Suppose we are interested in the proportion of the 85 students in the lunchroom cafeteria that smoke. (a) Is the normal approximation to the proportion =r/n valid? Explain. (b) What is the probability that the proportion of those in the cafeteria who smoke is at least one fourth? (c) What is the probability that the proportion of those in the cafeteria who smoke is no more than 30%? 2. According to Mr. Bock, 67% of all students at LHS play sports. Suppose we are interested in the proportion of the 100 students in the East Atrium play sports. (a) Is the normal approximation to the proportion p=r/n valid? Explain.
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