A school nurse believe that 5% of the Grade 7 students have below normal Body Mass Index (BMI) and should undergo a feeding program. After making a survey, she found that 18 of 210 randomly selected students have have below normal BMI. The Senior High School researchers claim that more than 20% of Senior High School male students have tried smoking cigarette. After collecting 150 random samples, they found that 30 of them have tried smoking cigarette. After launching the Water and Hygiene in School program, the principal believes that 95 % of the students applied tha proper handwashing techniques in school as well as at home. A random survey was conducted to 500 students and only 410 of them said they practiced correct handwashing technique both in school and at home A researcher claims that 50% of the rats in the locality are male. After randomly collecting sufficient amount of samples, he found that the proportion of male rats in the population of rats is 35%. Test the claim at 95% confidence level. A teacher wants to test his assumption that less than 30% of the Senior High School students like research class. After randomly collecting 150 samples, he found out that only 40 students like their research class.

A school nurse believe that 5% of the Grade 7 students have below normal Body Mass Index (BMI) and should undergo a feeding program. After making a survey, she found that 18 of 210 randomly selected students have have below normal BMI. The Senior High School researchers claim that more than 20% of Senior High School male students have tried smoking cigarette. After collecting 150 random samples, they found that 30 of them have tried smoking cigarette. After launching the Water and Hygiene in School program, the principal believes that 95 % of the students applied tha proper handwashing techniques in school as well as at home. A random survey was conducted to 500 students and only 410 of them said they practiced correct handwashing technique both in school and at home A researcher claims that 50% of the rats in the locality are male. After randomly collecting sufficient amount of samples, he found that the proportion of male rats in the population of rats is 35%. Test the claim at 95% confidence level. A teacher wants to test his assumption that less than 30% of the Senior High School students like research class. After randomly collecting 150 samples, he found out that only 40 students like their research class.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section: Chapter Questions

Problem 13PT

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