A researcher records the crying time (in minutes)of infants given oral administration of sucrose (n = 12)or tap water (n = 16)prior to a heel prick.The mean crying time in the sucrose group was 3.3±2.4 (M±SD)minutes;in the tap water group,it was 7.3±1.6 (M±SD)minutes.If the null hypothesis is that there is no difference in crying time,then what is the decision for this test?
A)Crying time was significantly reduced among infants given the water solution prior to a heel prick.
B)Crying time was not reduced among infants given the sucrose solution prior to a heel prick.
C)Crying time was significantly reduced among infants given the sucrose solution prior to a heel prick.
D)Crying time was the same in both groups.

Question

Quizplus · Accepted Answer

The null hypothesis states that there is no difference in crying time between infants given sucrose or tap water. The mean crying time in the sucrose group (3.3±2.4 minutes) is significantly lower than the mean crying time in the tap water group (7.3±1.6 minutes). As a result, we can reject the null hypothesis and conclude that there is a significant difference in crying time between the two groups. Therefore, choice C is the correct answer.

A Researcher Records the Crying Time (In Minutes)of Infants Given