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A worker at the local Department of Motor Vehicles (DMV) claims that 60% of teenagers smile in their driver's license photo. In a random sample of 10 teenagers from last month's new driver's licenses, only 4 of them were smiling in their photos. To see how unusual this sample is, 100 simulated trials were conducted under the assumption that 60% of teenagers smile for their driver's license photo. Driver's Licenses 25 20 15 10 3 4 5 6 7 8 9 10 Number of Smiles Based on the dotplot of the simulation results and the random sample from last month's new driver's licenses, which conclusion can be drawn? O The actual proportion of teenagers who do not smile is only 8%. O It is clear that exactly 6 out of 10 teenagers will smile in their driver's license photo. O It we continued to take more samples of 10 teenagers, the center of the distribution would shift to 6. O There is about an 8% chance that 4 or fewer teenagers smiled for their photo. This is not unusual and is not convincing evidence that the true probability is less than 60%. kouanbai

A worker at the local Department of Motor Vehicles (DMV) claims that 60% of teenagers smile in their driver's license photo. In a random sample of 10 teenagers from last month's new driver's licenses, only 4 of them were smiling in their photos. To see how unusual this sample is, 100 simulated trials were conducted under the assumption that 60% of teenagers smile for their driver's license photo. Driver's Licenses 25 20 15 10 3 4 5 6 7 8 9 10 Number of Smiles Based on the dotplot of the simulation results and the random sample from last month's new driver's licenses, which conclusion can be drawn? O The actual proportion of teenagers who do not smile is only 8%. O It is clear that exactly 6 out of 10 teenagers will smile in their driver's license photo. O It we continued to take more samples of 10 teenagers, the center of the distribution would shift to 6. O There is about an 8% chance that 4 or fewer teenagers smiled for their photo. This is not unusual and is not convincing evidence that the true probability is less than 60%. kouanbai

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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A worker at the local Department of Motor Vehicles (DMV) claims that 60% of teenagers smile in their driver's license photo. In a random sample of 10 teenagers from last month's new driver's licenses, only 4 of them were smiling in their photos. To see how unusual this sample is, 100 simulated trials were conducted under the assumption that 60% of teenagers smile for their driver's license photo. Driver's Licenses 25 20 15 4 5 6 7 8 9 10 3 Number of Smiles Based on the dotplot of the simulation results and the random sample from last month's new driver's licenses, which conclusion can be drawn? O The actual proportion of teenagers who do not smile is only 8%. O Itis clear that exactly 6 out of 10 teenagers will smile in their driver's license photo. O I f we continued to take more samples of 10 teenagers, the center of the distribution would shift to 6. O There is about an 8% chance that 4 or fewer teenagers smiled for their photo. This is not unusual and is not convincing evidence that the true probability is less than 60%. Frequency 10
Transcribed Image Text:A worker at the local Department of Motor Vehicles (DMV) claims that 60% of teenagers smile in their driver's license photo. In a random sample of 10 teenagers from last month's new driver's licenses, only 4 of them were smiling in their photos. To see how unusual this sample is, 100 simulated trials were conducted under the assumption that 60% of teenagers smile for their driver's license photo. Driver's Licenses 25 20 15 4 5 6 7 8 9 10 3 Number of Smiles Based on the dotplot of the simulation results and the random sample from last month's new driver's licenses, which conclusion can be drawn? O The actual proportion of teenagers who do not smile is only 8%. O Itis clear that exactly 6 out of 10 teenagers will smile in their driver's license photo. O I f we continued to take more samples of 10 teenagers, the center of the distribution would shift to 6. O There is about an 8% chance that 4 or fewer teenagers smiled for their photo. This is not unusual and is not convincing evidence that the true probability is less than 60%. Frequency 10
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