Question

When 14 second-year medical students at Bellevue Hospital measured the same person's systolic blood pressure, they obtained the results listed below (in mmHg). Assuming that the population standard deviation is known to be 10 mmHg, use a significance level of 0.05 to test the claim that the mean blood pressure level is less than 140mmHg. Hypertension is defined as a blood pressure level of 140 mmHg or higher. 138 135 120 120 144 140 150 130 140 125 130 143 130 130 Select one: 1.The null hypothesis is Ho:. ? 140 mmHg >140 mmHg ?140 mmHg ?140 mmHg 2.The alternate hypothesis is= ? 140 mmHg >140 mmHg ?140 mmHg <140 mmHg 3.The test statistic is z * = 4. The probabilistic value p-value = 5. The decision is:(select one) Reject Ho Don't reject Ho 6.The confidence interval with a confidence level of 90% for the population mean ? it is <? < .

          When 14 second-year medical students at Bellevue Hospital measured the same
person's systolic blood pressure, they obtained the results listed below (in mmHg).
Assuming that the population standard deviation is known to be 10 mmHg, use a
significance level of 0.05 to test the claim that the mean blood pressure level is less
than 140mmHg. Hypertension is defined as a blood pressure level of 140 mmHg or
higher.
138 135 120 120 144 140 150
130 140 125 130 143 130 130
Select one:
1.The null hypothesis is Ho:____.
? 140 mmHg
>140 mmHg
?140 mmHg
?140 mmHg
2.The alternate hypothesis is=
? 140 mmHg
>140 mmHg
?140 mmHg
<140 mmHg
3.The test statistic is z * =
4. The probabilistic value p-value =
5. The decision is:(select one)
Reject Ho
Don't reject Ho
6.The confidence interval with a confidence level of 90% for the population mean ? it
is____ <? < ____.

When 14 second-year medical students at Bellevue Hospital measured the same
person's systolic blood pressure, they obtained the results listed below (in mmHg).
Assuming that the population standard deviation is known to be 10 mmHg, use a
significance level of 0.05 to test the claim that the mean blood pressure level is less
than 140mmHg. Hypertension is defined as a blood pressure level of 140 mmHg or
higher.
138 135 120 120 144 140 150
130 140 125 130 143 130 130
Select one:
1.The null hypothesis is Ho:.
? 140 mmHg
>140 mmHg
?140 mmHg
?140 mmHg
2.The alternate hypothesis is=
? 140 mmHg
>140 mmHg
?140 mmHg
<140 mmHg
3.The test statistic is z * =
4. The probabilistic value p-value =
5. The decision is:(select one)
Reject Ho
Don't reject Ho
6.The confidence interval with a confidence level of 90% for the population mean ? it
is <? < .

Added by Eduardo S.

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