a. The parameters of interest in this study are the proportions of women with gestational diabetes who have LGA (Large for Gestational Age) babies under different types of prenatal care. Let
be the proportion for specialized prenatal care and
be the proportion for standard prenatal care.
b. The null hypothesis is that there is no difference in the proportions of women with gestational diabetes having LGA babies between those receiving specialized prenatal care and those receiving standard prenatal care.
c. Null hypothesis in symbols:

Alternative hypothesis in symbols:

In this study focusing on the impact of specialized prenatal care for women with gestational diabetes, the parameters of interest are the proportions of women who have LGA (Large for Gestational Age) babies under two different types of prenatal care. Let
represent the proportion of women with gestational diabetes who have LGA babies under specialized prenatal care, and
represent the proportion for those under standard prenatal care.
The null hypothesis posits that there is no difference in the proportions of women with gestational diabetes having LGA babies between those receiving specialized prenatal care and those receiving standard prenatal care. Essentially,
is equal to
, suggesting that the type of prenatal care does not affect the likelihood of having an LGA baby. On the other hand, the alternative hypothesis suggests that there is a significant difference between the two proportions, implying that the type of prenatal care does have an impact on the likelihood of having an LGA baby.
Complete ques:
Reconsider the data from the previous study about the effect of specialized prenatal care for women with gestational diabetes. Do the data provide evidence of a relationship between the type of prenatal care a woman with gestational diabetes receives and whether or not she has an LGA baby?
a. Define (in words) the parameters of interest of this study. Also, assign symbols to the parameters.
b. State the appropriate null and alternative hypotheses in words.
c. State the null and alternative hypotheses in symbols.