Hi can someone please help me with the following questions?
Q7 4 Points Let's assume we know that the average birth weight for white babies in the US is 3,410 grams and wish to compare the average birth weight of a sample of black babies to this value. We take a sample of 50 black babies' birth records and nd that the sample average X is 3,460 with standard deviation 3 of 235. 07.1 1 Point What are the appropriate hypotheses for this testing problem? 0 H0: u 3,410 0 H0: 1? 3,410, Ha: I? = 3,410 0 H0: :4 = 3410, Ha: u > 3,410 (9 H0: 14 = 3,410, Ha: u a: 3,410 O HO: u = 3460, Ha; u 3,460 .1 Correct Last saved on Apr 14 at 11:29 AM 07.2 2 Points What is the test statistic for this problem? (Round to three decimal places) t: How many degrees of freedom does this test statistic have? 07.3 1 Point What is the associated p-value based on the test statistic and alternative hypothesis? (Round to two decimal places) Save Answer 08 08 4 Points Last season in major league baseball, there were 2.56 home runs per game. There has been talk that the baseball has been deadened this year (about 2 feet less for every 375). We want to test if the balls are truly deadened and are leading to less home runs, but we don't want to wait until the end of the season. Let's imagine through the first quarter of the season (615 games), the per game home run rate has an average of 2.49 with a standard deviation over all the games played of 1.5 (Assume the rates of home runs does not naturally change on average throughout the season.) 08.1 1 Point What are the appropriate hypotheses for this testing problem? 0 H0: )1 2.56 0 H0: 1? at 2.56, H\": I? 2.49 I Correct 08.2 2 Points What is the test statistic for this problem? (Round to three decimal places) How many degrees of freedom does this test statistic have? Save Answer 08.3 1 Point What is the associated p-value based on the test statistic and alternative hypothesis? (Round to two decimal places) Save