Answered: A study was conducted recently to see…

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

Related questions

Topic Video

Question

A study was conducted recently to see the change of monthly internet subscription fees. A sample of 60 subscribers shows that their average monthly bill is $94. Assume the population standard deviation σ=$23.

(a) Estimate the average monthly internet subscription fee. Use

(b) It was reported that the average monthly bill last year was $100. Does the sample data suggest that the average monthly bill has decreased from last year? Using

(c) What is the -value of the test in (b)?

(d) Would you reach the same conclusion as in (b) if

(Note: For your convenience, you can copy/ paste the following notations.)

1. A study was conducted recently to see the change of monthly internet subscription fees. A
sample of 60 subscribers shows that their average monthly bill is $94. Assume the population
standard deviation o=$23.
(a) Estimate the average monthly internet subscription fee. Use a = 0.01.
(b) It was reported that the average monthly bill last year was $100. Does the sample data
suggest that the average monthly bill has decreased from last year? Using a =
0.05
(c) What is the p-value of the test in (b)?
(d) Would you reach the same conclusion as in (b) if a =
0.01?
(Note: For your convenience, you can copy/ paste the following notations.)
H, P,X, P, Ho, Ha, 0,s, Za, Za/2, Zo.1, Zo.05, Zo.025, Zo.01, Zo.005, ta, ta/2, to.1, to.o5, to.o25, to.01, to.005,
Far Fo.1, Fo.o05, Fo.o1, >,<,=,#,±, µ, M2, P(Z >),P(Z <),P(T >),P(T <),
P(1– P)
Za/2
p- p
S
tal2 n
Vn'
Za/2
',Z =
-,T
S
p(1-p)

Expert Solution

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Hypothesis Tests and Confidence Intervals for Means$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions