Does buying CDs depend on whether you own a smartphone or not? A survey asks a group of students if they buy CDs or not. It also asks if the students own a smartphone or not. The data are recorded in the contingency table below, and a chi- Square Test of Independence at the 1% significance level is performed No CDs 23 7 30 Row Total 37 24 61 CDs Smartphone No Smartphone Column Total 31 T Help Copy to Clipboard Download CSV (a) The null and alternative hypotheses are: Ho: The two variables are independent, so owning a smartphone does not affect buying CDs . Ha: The two variables are dependent, so owning a smartphone does affect buying CDs. (b) Compute the test statistic, rounded to one decimal place. (Use expected frequencies that are also rounded to one decimal place.) Provide your answer below:

Does buying CDs depend on whether you own a smartphone or not? A survey asks a group of students if they buy CDs or not. It also asks if the students own a smartphone or not. The data are recorded in the contingency table below, and a chi- Square Test of Independence at the 1% significance level is performed No CDs 23 7 30 Row Total 37 24 61 CDs Smartphone No Smartphone Column Total 31 T Help Copy to Clipboard Download CSV (a) The null and alternative hypotheses are: Ho: The two variables are independent, so owning a smartphone does not affect buying CDs . Ha: The two variables are dependent, so owning a smartphone does affect buying CDs. (b) Compute the test statistic, rounded to one decimal place. (Use expected frequencies that are also rounded to one decimal place.) Provide your answer below:

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 6CST

See similar textbooks