Question

Preliminary data analyses indicate that use of a paired t-test is reasonable in the following exercise. Perform the hypothesis test by using either the critical-value approach or the P-value approach. At the 1% significance level, do the accompanying data provide sufficient evidence to conclude that, on average, drinking fortified orange juice increases the serum 25(OH)D concentration in the blood? (Note: The mean and standard deviation of the paired differences are -57.21 nmo / L and 26.46 nmo / L, respectively.) Click the icon to view the description of the test. Click the icon to view the data table for serum 25(OH)D concentrations in the blood. State the null and alternative hypotheses. Let the Before values be population 1 and the After values be population 2. Choose the correct answer below. A. H0: ?1 = ?2 Ha: ?1 ? ?2 B. H0: ?1 = ?2 Ha: ?1 > ?2 C. H0: ?1 = ?2 Ha: ?1 < ?2 D. H0: ?1 ? ?2 Ha: ?1 = ?2 Determine the test statistic, t. t = -2.624 (Round to three decimal places as needed.)

          Preliminary data analyses indicate that use of a paired t-test is reasonable in the following exercise. Perform the hypothesis test by using either the critical-value approach or the P-value approach.
At the 1% significance level, do the accompanying data provide sufficient evidence to conclude that, on average, drinking fortified orange juice increases the serum 25(OH)D concentration in the blood? (Note: The mean and standard deviation of the paired differences are -57.21 nmo / L and 26.46 nmo / L, respectively.)
Click the icon to view the description of the test.
Click the icon to view the data table for serum 25(OH)D concentrations in the blood.
State the null and alternative hypotheses. Let the Before values be population 1 and the After values be population 2. Choose the correct answer below.
A. H0: ?1 = ?2
Ha: ?1 ? ?2
B. H0: ?1 = ?2
Ha: ?1 > ?2
C. H0: ?1 = ?2
Ha: ?1 < ?2
D. H0: ?1 ? ?2
Ha: ?1 = ?2
Determine the test statistic, t.
t = -2.624 (Round to three decimal places as needed.)

Preliminary data analyses indicate that use of a paired t-test is reasonable in the following exercise. Perform the hypothesis test by using either the critical-value approach or the P-value approach.
At the 1% significance level, do the accompanying data provide sufficient evidence to conclude that, on average, drinking fortified orange juice increases the serum 25(OH)D concentration in the blood? (Note: The mean and standard deviation of the paired differences are -57.21 nmo / L and 26.46 nmo / L, respectively.)
Click the icon to view the description of the test.
Click the icon to view the data table for serum 25(OH)D concentrations in the blood.
State the null and alternative hypotheses. Let the Before values be population 1 and the After values be population 2. Choose the correct answer below.
A. H0: ?1 = ?2
Ha: ?1 ? ?2
B. H0: ?1 = ?2
Ha: ?1 > ?2
C. H0: ?1 = ?2
Ha: ?1 < ?2
D. H0: ?1 ? ?2
Ha: ?1 = ?2
Determine the test statistic, t.
t = -2.624 (Round to three decimal places as needed.)

Added by Kenneth M.

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