An obstetrician has noticed that there seems to be a pattern to the genders of babies that
Question:
An obstetrician has noticed that there seems to be a pattern to the genders of babies that he delivers. That is, he tends to deliver boys and girls in clusters. In order to determine whether this pattern is true outside of his hospital, he calls four other hospitals in the region and obtains the following information regarding a random sample of births from the previous six months. Does the evidence gathered support the doctor's claim at a 0.01
Observed Sample of 926 Births | ||||
| Nov / Dec | Jan / Feb | Mar / Apr | Total |
Boy | 158 | 165 | 153 | 476 |
Girl | 149 | 147 | 154 | 450 |
Total | 307 | 312 | 307 | 926 |
a. State hypotheses
b. calculate the test statistic. (Round to 2 decimal places)
c. Conclude your test. Justify your answer.
Advertising and Promotion An Integrated Marketing Communications Perspective
ISBN: 978-0078028977
10th Edition
Authors: George Belch, Michael Belch