An accountant claims that 15 per cent of bills of ABC Company are inappropriate. To test this claim a random sample of 200 invoices are checked, and 17 are found to be inappropriate. Test, at the 5 per cent significance level, if the accountant's claim is supported by the sample evidence.

An accountant claims that 15 per cent of bills of ABC Company are inappropriate. To test this claim a random sample of 200 invoices are checked, and 17 are found to be inappropriate. Test, at the 5 per cent significance level, if the accountant's claim is supported by the sample evidence.

Name: 2. An accountant claims that 15 per cent of bills of ABC Company are
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: 2. An accountant claims that 15 per cent of bills of ABC Company are inappropriate. To testthis claim a random sample of 200 invoices are checked, and 17 are found to beinappropriate. Test, at the 5 per cent significance level, if the accountant's c

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A home improvement company is interested in improving customer satisfaction rate from the 58% currently claimed. The company sponsored a survey of 273 customers and found that 171 customers were satisfied. Determine whether sufficient evidence exists that the customer satisfaction rate is different than the claim by the company.
b) A test of 80 youths and 120 adults showed that 18 of the youths and 10 of the adults were careless drivers. Use a 1% level of significance to test the claim that youth percentage of careless drivers is higher than the adult percentage
A home improvement company is interested in improving customer satisfaction rate from the 51% currently claimed. The company sponsored a survey of 272 customers and found that 150 customers were satisfied. Determine whether sufficient evidence exists that the customer satisfaction rate is different than the claim by the company.
1. A marketing manager for a cell phone company claims that more than 35% of children aged 10 – 11 have cell phones. In a survey of 5000 randomly selected children ages 10 – 11, 1805 of them had cell phones. Based on the sample data, can you conclude that the manager's claim is true? Use a 1% level of significance. A. Compute the p-value. B. Make a decision. C. Interpret the results.
State Per Capita Personal Income ($) Birth Rate Delaware 28,493 13.9 Maryland 28,674 13.0 District of Columbia 35,704 15.7 Virginia 26,109 13.2 18,724 11.3 West Virginia 14.2 23.168 North Carolina 13.6 20,508 South Carolina 15.8 23,822 Georgia 13.1 24,799 Florida (a) The Ts(in 3 significant figures) for the given data is equal to Blank 1. (b) The typre of relation (negative, positve, or no relation) that exist between per capita personal income and birt rate is Blank 2
There is a 75% chance that those who are called will serve on jury duty. If 12 people are called for jury duty, what is the probabilty that none of the people will serve on the jury?
A medical school claims that more than 28% of its students plan to go into general practice. It is found that among a random sample of 130 of the school's students, 39% of them plan to go into general practice. You wish to conduct a significance test to evaluate the school's claim.
A research scientist wishes to test the claim that the mean number of children per classroom in California elementary school is less than 35. She selects a simple random sample of 42 California elementary school classrooms. Are the requirements to test the claim met? Explain in 1 - 2 complete sentences.
Suppose that in a random selection of 100 colored candies, 23% of them are blue. The candy company claims that the percentage of blue candies is equal to 26%. Use a 0.05 significance level to test that claim.
A survey of 1031 adults in a college asked whether they liked chocolate or strawberry ice cream more. Of those surveyed, 536 said they prefer chocolate. Determine and interpret the sample proportion. At the 5% significance level, does the data provide sufficient evidence to conclude that a majority of students in the college prefer chocolate ice cream?
what statsistical test, if any, would be typically associated with a bar gragh
Suppose that in a random selection of 100 colored candies, 20% of them are blue. The candy company claims that the percentage of blue candies is equal to 29%. Use a 0.01 significance level to test that claim.