A manufacturer is evaluating the variation in thickness for piezoelectric actuators from two component suppliers. The two populations are independent, and the thickness measurements are normally distributed. The thickness was measured for a sample of 30 products purchased from Supplier 1, and it was found that s1 = 3.8048 . A sample of 30 products was also purchased from Supplier 2 and it was found that 82 = 5.2967. Is there evidence at the 0.1 level of significance that the thickness variance for Supplier 1 is smaller than for Supplier 2? (Round answers to 3 decimal places as needed) The correct alternative hypothesis is: O H1:0 + o O H1:0} < o? O H1:0} < o H1:0 > o? H1: 41 > H2 H1: µ1 < H2 H1: µ1 2 H2 H1: µ1 < µ2 The test statistic is Fobs The probability of variance ratios at or beyond Fobs occurring by chance is = The decision is to Select an answer v that the variance in The correct summary would be: Select an answer thickness for Supplier 1 is smaller than Supplier 2.

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A manufacturer is evaluating the variation in thickness for piezoelectric actuators from two component
suppliers. The two populations are independent, and the thickness measurements are normally distributed.
The thickness was measured for a sample of 30 products purchased from Supplier 1, and it was found that
= 3.8048 . A sample of 30 products was also purchased from Supplier 2 and it was found that
5.2967.
S1
S2
Is there evidence at the 0.1 level of significance that the thickness variance for Supplier 1 is smaller than
for Supplier 2?
(Round answers to 3 decimal places as needed)
The correct alternative hypothesis is:
O H1:0 + 0
OH1: H1 > µ2
:
O H1:0} < o?
O H1:0 2 0
O H1:0
O H1: µ1 2 l2
O H1: 41 < µ2
The test statistic is Fobs
The probability of variance ratios at or beyond Fobs occurring by chance is =
The decision is to Select an answer
v that the variance in
The correct summary would be: Select an answer
thickness for Supplier 1 is smaller than Supplier 2.
Transcribed Image Text:A manufacturer is evaluating the variation in thickness for piezoelectric actuators from two component suppliers. The two populations are independent, and the thickness measurements are normally distributed. The thickness was measured for a sample of 30 products purchased from Supplier 1, and it was found that = 3.8048 . A sample of 30 products was also purchased from Supplier 2 and it was found that 5.2967. S1 S2 Is there evidence at the 0.1 level of significance that the thickness variance for Supplier 1 is smaller than for Supplier 2? (Round answers to 3 decimal places as needed) The correct alternative hypothesis is: O H1:0 + 0 OH1: H1 > µ2 : O H1:0} < o? O H1:0 2 0 O H1:0 O H1: µ1 2 l2 O H1: 41 < µ2 The test statistic is Fobs The probability of variance ratios at or beyond Fobs occurring by chance is = The decision is to Select an answer v that the variance in The correct summary would be: Select an answer thickness for Supplier 1 is smaller than Supplier 2.
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