An Independent consumer group published its finding that the lifetimes of electric bulbs manufactured by BIG Corporation are approximately normally distributed with a mean of 600 days and a standard deviation of 120. BIG Corporation claims that the standard deviation of its electric bulbs is less than 120. Suppose that we want to carry out a hypothesis test to see if BIG Corporation's claim is correct. State the null hypothesis Ho and the alternative hypothesis H₁ that we would use for this test. Ho: O H₁:0 X Р 6 O S 10<0 COSO DO TRE 0-0 0:0 Check acer Oll 2022 M M 00 國8民□□□ D B

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An Independent consumer group published its finding that the lifetimes of electric bulbs manufactured by BIG Corporation are approximately normally
distributed with a mean of 600 days and a standard deviation of 120. BIG Corporation claims that the standard deviation of its electric bulbs is less than 120.
Suppose that we want to carry out a hypothesis test to see if BIG Corporation's claim is correct. State the null hypothesis Ho and the alternative hypothesis H₂
that we would use for this test.
X
Р
Ho: O
H₁: D
6
O
S
OSO >0
D
TINE
D=0 0=0
Check
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DII
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Ⓒ2022 M
h
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國8民□□□
B
D
Transcribed Image Text:An Independent consumer group published its finding that the lifetimes of electric bulbs manufactured by BIG Corporation are approximately normally distributed with a mean of 600 days and a standard deviation of 120. BIG Corporation claims that the standard deviation of its electric bulbs is less than 120. Suppose that we want to carry out a hypothesis test to see if BIG Corporation's claim is correct. State the null hypothesis Ho and the alternative hypothesis H₂ that we would use for this test. X Р Ho: O H₁: D 6 O S OSO >0 D TINE D=0 0=0 Check tab esc 12 ! 1 ← 9 a @ 2 W S # 3 e с d $ 4 r % 5 f acer ** t DII A 6 g y 0 & 7 Ⓒ2022 M h u 8 j 00 國8民□□□ B D
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