A study on Telco monthly usage (RM unit) has been done among students of Applied Statistics course.Select 20 data from the following data at random using EXCEL. Write the whole process of the selection.Construct and interpret a 95% confidence interval to estimate the mean Telco monthly usage.Monthly bill or topup (RM)305010010045303030503030504030604090409845509028303050102040357242503550605030803530130405950425530200406010050303540301506050801202050404530354030594230984030303050355050306048

to construct 95% CI for mean Telco monthly usage

Answered: Construct and interpret a 95%…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A study on Telco monthly usage (RM unit) has been done among students of Applied Statistics course.

Select 20 data from the following data at random using EXCEL. Write the whole process of the selection.
Construct and interpret a 95% confidence interval to estimate the mean Telco monthly usage.

Monthly bill or topup (RM)
30
50
100
100
45
30
30
30
50
30
30
50
40
30
60
40
90
40
98
45
50
90
28
30
30
50
10
20
40
35
72
42
50
35
50
60
50
30
80
35
30
130
40
59
50
42
55
30
200
40
60
100
50
30
35
40
30
150
60
50
80
120
20
50
40
45
30
35
40
30
59
42
30
98
40
30
30
30
50
35
50
50
30
60
48

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