(d) (i)(ii)(iii)Write down the x² test statistic.Write down the p-value.State the conclusion for the test in context. Give a reason for your answer. A group of 1280 students were asked which electronic device they preferred. The results perage group are given in the following table.Preferred deviceLaptopTabletMobile phoneTotal11-1314320572420Age14-1616022412851217-1815313164348Total4565602641280

Solution: The observed frequency table is

Answered: (d) () (ii) (ii) Write down the x* test…

(d) () (ii) (ii) Write down the x* test statistic. Write down the p-value. State the conclusion for the test in context. Give a reason for your answer.

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 8CR

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Question

(d) (i)
(ii)
(iii)
Write down the x² test statistic.
Write down the p-value.
State the conclusion for the test in context. Give a reason for your answer.

A group of 1280 students were asked which electronic device they preferred. The results per
age group are given in the following table.
Preferred device
Laptop
Tablet
Mobile phone
Total
11-13
143
205
72
420
Age
14-16
160
224
128
512
17-18
153
131
64
348
Total
456
560
264
1280

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