The mean volume of a large population of vials used to be 10.9 ml. To test whether this value has decreased, a random sample of size 300 vials are measured and found to have a sample mean of 10.5 ml. We will assume that the population of vial volumes is normally distributed with standard deviation of 3.6 ml. Test whether the mean population volume has decreased at a level of significance of 1%. Show your relevant steps below. Step 1: Hypotheses: • The null hypothesis Ho is (choose one): x = 10.5 OH = 10.9 x = 10.9 H = 10.5 • For the alternative hypothesis Ha we change the equal sign in Ho to (choose one):

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The mean volume of a large population of vials
used to be 10.9 ml. To test whether this value has
decreased, a random sample of size 300 vials are
measured and found to have a sample mean of
10.5 ml.
We will assume that the population of vial volumes
is normally distributed with standard deviation of
3.6 ml.
Test whether the mean population volume has
decreased at a level of significance of 1%. Show
your relevant steps below.
Step 1: Hypotheses:
• The null hypothesis Ho is (choose one):
µ = 10.9
X = 10.5
x = 10.9
u = 10.5
• For the alternative hypothesis Ha we change
the equal sign in Ho to (choose one):
Transcribed Image Text:The mean volume of a large population of vials used to be 10.9 ml. To test whether this value has decreased, a random sample of size 300 vials are measured and found to have a sample mean of 10.5 ml. We will assume that the population of vial volumes is normally distributed with standard deviation of 3.6 ml. Test whether the mean population volume has decreased at a level of significance of 1%. Show your relevant steps below. Step 1: Hypotheses: • The null hypothesis Ho is (choose one): µ = 10.9 X = 10.5 x = 10.9 u = 10.5 • For the alternative hypothesis Ha we change the equal sign in Ho to (choose one):
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