c. The test statistic d. The p-value = v = 1.933 x (please show your answer to 3 decimal places.) (Please show your answer to 3 decimal places.)
c. The test statistic d. The p-value = v = 1.933 x (please show your answer to 3 decimal places.) (Please show your answer to 3 decimal places.)
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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Hi please complete only C & D. Everything else is done thank you
Transcribed Image Text:Only about 20% of all people can wiggle their ears. Is this percent different for millionaires? Of the 393
millionaires surveyed, 94 could wiggle their ears. What can be concluded at the a = 0.05 level of
significance?
a. For this study, we should use z-test for a population proportion ✓
b. The null and alternative hypotheses would be:
Ho: Р
H₁: pv
= 1.933
α
0.20
0.20
c. The test statistic z v
d. The p-value =
e. The p-value is > v
f. Based on this, we should
fail to reject
g. Thus, the final conclusion is that ...
(please enter a decimal)
✓(Please enter a decimal)
x (please show your answer to 3 decimal places.)
(Please show your answer to 3 decimal places.)
the null hypothesis.
The data suggest the population proportion is not significantly different from 20% at a = 0.05,
so there is statistically insignificant evidence to conclude that the population proportion of
millionaires who can wiggle their ears is different from 20%.
O The data suggest the populaton proportion is significantly different from 20% at a = 0.05, so
there is statistically significant evidence to conclude that the population proportion of
millionaires who can wiggle their ears is different from 20%.
O The data suggest the population proportion is not significantly different from 20% at a = 0.05,
so there is statistically significant evidence to conclude that the population proportion of
millionaires who can wiggle their ears is equal to 20%.
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