$\mathrm { H } _ { 0 } : \sigma = 8.6$
$\mathrm { H } _ { 1 } : \sigma

Name: $\mathrm { H } _ { 0 } : \sigma = 8.6$ $\mathrm { H } _ { 1 } : \sigma < 8.6$ A) Left-tailed, $\sigma$ B) Right-tailed, $\mu$ C) Right-tailed, $\sigma$ D) Left-tailed, $8$
Brand: Quizplus
Rating: 5.0 (28 reviews)

Question

$\mathrm { H } _ { 0 } : \sigma = 8.6$
$\mathrm { H } _ { 1 } : \sigma < 8.6$
A) Left-tailed, $\sigma$
B) Right-tailed, $\mu$
C) Right-tailed, $\sigma$
D) Left-tailed, $8$

Quizplus · Accepted Answer

The hypothesis test is concerning the population standard deviation ($\sigma$), not the mean ($\mu$), and the alternative hypothesis ($\mathrm { H } _ { 1 }$) specifies that $\sigma$ is less than a certain value, indicating a left-tailed test.

H0:σ=8.6\mathrm { H } _ { 0 } : \sigma = 8.6H0​:σ=8.6

$\mathrm { H } _ { 0 } : \sigma = 8.6$