MATLAB: An Introduction with Applications
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ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Transcribed Image Text:Weights of Vacuum Cleaners Upright vacuum cleaners have either a hard
body type or a soft body type. Shown are the weights in pounds of a sample of
each type. At a=0.05, can it be concluded that the means of the weights are
different? Assume the variables are normally distributed and the variances are
unequal.
Hard body types
Soft body types
21
15
16
20
24
13 11 13
alo
18
18
17
17
12
15
14
16
23
16
17
15
17
20
16
17
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for the mean weight of the hard body type.
Part
State the hypotheses and identify the claim with the correct hypothesis.
HoHH not claim
H : H, # H, claim
This hypo
test is a tal
test.
Part
he critical value(s). Round the answer(s) to at least three decimal
places, If there is more than one critical value, separate them with
commas.
Critical value(s):-2.306, 2.306
Part: 2 /5
Part 3 of 5
Compute the test value. Round the sample statistics to two decimal places
and the final answer to at least three decimal places.
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