
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question 17
Subparts b, c , f

Transcribed Image Text:(e) State the decision rule:
% if the p-value of the
o at a = 1
Reject HO and accept Ha v
o is Select an answer
sample statistic
(f) Experiment:
Symbol of the sample statistic:
O Pz
O Pi - P2
Or
Op
O PP
O I2 - I1
O Pz-
Op
Value of the sample statistic:
P-value of the sample statistic rounded to 4 decimal places:
(g) Conclusion: Fail to reject HO
O at a =| 1
(h) Answer the question: Is the mean bumper repair cost less for small cars than it is for midsize cars?
O Yes, because the p-value is less than alpha.
O No, because the p-value is less than alpha.
O No, because p-value is greater than alpha.
O Yes, because the p-value is greater than alpha.
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Transcribed Image Text:In crash tests at five miles per hour, the mean bumper repair cost for 15 small cars is 576 dollars with a
standard deviation of 186 dollars. In similar test of 21 midsize cars, the mean bumper repair cost is 700
dollars with a standard deviation of 257 dollars. Conduct a hypothesis test based on this sample data, with
a = 1%. Answer the question, is the mean bumper repair cost less for small cars than it is for midsize cars?
(a) State the hypotheses:
Họ: The population mean
o bumper repair cost for small cars is equal to
the population mean
o bumper repair cost for midsize cars.
Symbols: O pO Pz,-2
Ha: The population mean
o bumper repair cost for small cars is less than
the population mean
o bumper repair cost for midsize cars.
Symbols:
(b) The correct symbol for the mean of the sampling distribution is:
O 2 - I1
Or
O Hp
Op
OPi - P2
(c) The value for the mean of the sampling distribution is:-124
(d) Choose the correct distribution:
O Chi-Square Distribution
O T-Distribution
O Normal Distribution
O O
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