Problem and data are copied below. Formulation of hypothesis testing is the key . There are two questions asked in this problem. A different formulation may be needed for answering the second question.
Offspring is female Offspring is male
Flying Fighters 51 38
Flying Transports 14 16
Not flying 38 46
It is conventional wisdom in military squadrons that pilots tend to father more girls than boys. Snyder(1961) gathered data for military fighter pilots. The sex of the pilots' offspring were tabulated for three kinds of flight duty during the month of conception.
(a) Is there any significant difference between three groups?
(b) In the United States in year 1950, 105.37 males were born for every 100 females. Are the data consistent with this population sex ratio ?
1. Conduct an appropriate test to compare the literal style pattern between Sanditon I and Sanditon II. State the null hypothesis and the alternative hypothesis. Use a = = 5%.