A)

A researcher was interested in knowing whether the winning proportion of games at home is different to the winning proportion of games away for a particular baseball team. In a regular baseball season this team palyed 80 games at home and 97 games away. They won 32 of their home games and 68 of the games palyed away. Calculate the combined sample proportion for this case? Provide your answer to 3 decimal places.Which of the following are true for non-parametric tests? You may choose more than one answers. O They can be used with small sample sizes. O) ANOVA is a non-parametric test. The Mann-Whitney U test is not a non-parametric test. They usually use ranking of the numbers rather than their values. O They can be used with non-normal data.It is stated by the media that there will be 36% voters for democratic candidate for a particular election. A researcher claims that this percentage might be different to 36%. So he interviews 360 voters about who they going to vote. Of the 360 voters, 206 reported that they are going to vote for the democratic candidate. He is planning to carry out a hypothesis test to check the claim made by media. What are the null and alternative hypotheses for this hypothesis test? O Ho : p=0.36 and Ha : p #0.36 O Ho : p=0.57 and Ha : p #0.57 O Ho : p=0.43 and Ha : p # 0.43 O Ho : p = 0 and Ha : p #0The influence of feeding regimens on iron status during infancy were considered among a set of infants. One group contained 23 breastfed infants, while 19 children in another group were fed a standard baby formula without any iron supplements. Infants who were breastfed had average blood hemoglobin levels of 13.3 g/dl and standard deviation of 1.7 g/dl and infants who were given baby formula average blood hemoglobin levels of 12.4 g/dl and standard deviation of 1.8 g/dl. Population standard deviations for these two groups were unknown. What is the most suitable test statistic for this example? O O p(1-pip(1-pi O XI - X1 O X O XI-X2 +