#34.

In the general population, patients who are recovering from bronchial pneumonia normally take a mean (average) of 4.75 days toleave the hospital, with apopulation standard deviationof 1.82 days.Medical personnel at a hospital are trying a newmedication that is designed to ease breathing during recovery. What is not currently known is whether the new medication willimpact duration of hospital stay. The first sample of 25 patients (n=25) to whom this medication was administered werereleased from the hospital in a mean (average) of 2.60 days. Based on this result, should the hospital conclude that there isasignificant differencein duration of hospital stay because of the new medication?

The appropriate statistical procedure for this problem would be a ___________?

z-test

t-test

Chi-square Goodness of Fit

Chi-square Test for Independence

Pearson r correlation

#35.

In the general population, patients who are recovering from bronchial pneumonia normally take a mean (average) of 4.75 days toleave the hospital, with apopulation standard deviationof 1.82 days.Medical personnel at a hospital are trying a newmedication that is designed to ease breathing during recovery. What is not currently known is whether the new medication willimpact duration of hospital stay. The first sample of 25 patients (n=25) to whom this medication was administered werereleased from the hospital in a mean (average) of 2.60 days. Based on this result, should the hospital conclude that there isasignificant differencein duration of hospital stay because of the new medication?

What type of test is this?

One-tailed

Two-tailed

Three-tailed

Four-tailed

Joint conditional probability

#36.

In the general population, patients who are recovering from bronchial pneumonia normally take a mean (average) of 4.75 days toleave the hospital, with apopulation standard deviationof 1.82 days.Medical personnel at a hospital are trying a newmedication that is designed to ease breathing during recovery. What is not currently known is whether the new medication willimpact duration of hospital stay. The first sample of 25 patients (n=25) to whom this medication was administered werereleased from the hospital in a mean (average) of 2.60 days. Based on this result, should the hospital conclude that there isasignificant differencein duration of hospital stay because of the new medication?

The most appropriate null hypothesis (in symbols)would be:

newmed= 4.75

newmed= 2.60

newmed> 2.60

newmed>4.75

newmed< 2.60

#37.

In the general population, patients who are recovering from bronchial pneumonia normally take a mean (average) of 4.75 days toleave the hospital, with apopulation standard deviationof 1.82 days.Medical personnel at a hospital are trying a newmedication that is designed to ease breathing during recovery. What is not currently known is whether the new medication willimpact duration of hospital stay. The first sample of 25 patients (n=25) to whom this medication was administered werereleased from the hospital in a mean (average) of 2.60 days. Based on this result, should the hospital conclude that there isasignificant differencein duration of hospital stay because of the new medication?

The most appropriate alternative hypothesis (in symbols) would be:

newmed= 4.75

newmed= 2.60

newmed< 4.75

newmed4.75

newmed> 2.60

#44.

In the general population, patients who are recovering from bronchial pneumonia normally take a mean (average) of 4.75 days toleave the hospital, with apopulation standard deviationof 1.82 days.Medical personnel at a hospital are trying a newmedication that is designed to ease breathing during recovery. What is not currently known is whether the new medication willimpact duration of hospital stay. The first sample of 25 patients (n=25) to whom this medication was administered werereleased from the hospital in a mean (average) of 2.60 days. Based on this result, should the hospital conclude that there isasignificant differencein duration of hospital stay because of the new medication?

Based on your results, which of the following decisions would you make?

reject the null hypothesis

fail to reject the null hypothesis

reject the alternator hypothesis

fail to reject the alternator hypothesis