1. Suppose 201 subjects are treated with a drug that is used to treat pain and 51 of them developed nausea . Use a 0.01 significance level to test the claim that more then 20 % of users develop nausea. Identify the null and alternative hypothesis for this test 2. A data set set includes data from student evaluations of courses. The summary statistics are n= 83, x= 3.43 s= 0.61 Use a 0.05 significance level to test the claim that the population of student course evaluations has a mean equal to 3.50. Assume that's simple random has been selected . Identify the null and alternative hypothesis test statistics, P-Value and state the final conclusion that addresses the original claim . What are the null and alternative hypothesis? 3. A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 380 babies were born, and 342 of them were girls . Use the sample data to construct a 99% confidence interval estimate of the percentage of girls born . Based on the result does the method appear to be effective ? 4. Claim: The mean pulse rate ( in beats per minute) of adult males is equal to 68.8 bpm. For a random sample of 175 adult males the mean pulse rate is 67.5 bpm and the standard deviation is 11.3 bpm. Complete parts (a) and (b) below