Failure to grow normally during the first year of life (perinatal growth failure) was observed in 33 of 249 very-low birthweight babies. The 90% confidence interval was 0.1383 +/- 0.0357. Write a statement interpreting the 90% confidence interval. (2 points)

A simple random sample of 262 leukemia cases consisted of 150 males and 112 females. Does this provide the evidence of a gender difference for the disease? Observed proportion, male = 150/ (150+112) = 0.5725. Test Ho = p = 0.5. Use the 5 step hypothesis testing process discussed in class (5 points)