8) The null hypothesis in problem 5 is to be tested at the 5 level of significance. The null hypothesis should be: a) re

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8 The Null Hypothesis In Problem 5 Is To Be Tested At The 5 Level Of Significance The Null Hypothesis Should Be A Re 1 (44.22 KiB) Viewed 29 times

8) The null hypothesis in problem 5 is to be tested at the 5 level of significance. The null hypothesis should be: a) rejected b) not rejected c) impossible to determine 9) How large a sample would be necessary to estimate Bill's nean chore time with a margin of error, E-5 minutes at a 90% confidence level? Use the following information to answer questions 10 through 15. For years the percentage of passengers with one or more pieces of carry-on luggage has been stable at 38%. Is there overwhelming evidence of an increase in the proportion of passengers with one or more pieces of carry-on luggage? The airline recently selected 300 passengers at random and determined that 148 possessed carry-on luggage. 10) What is the appropriate null and alternative hypothesis to support the airline's belief? 11) The null hypothesis is to be tested at the 14 level of significance decision The rule is: a) Reject if z>1.96 b) Reject if z<-1.96 c) Reject if z>1.645 d) Reject if z<-1.645 e) Reject if z>1.96 or z<-1.96 f) Reject if z<-1.28 g) Reject if z>1.28 h) Reject if z<-2.33 i) Reject if z>2.33 k) None of the above 12) The standardized test statistic for this problem equals: a) 1.8 b) -1.8 c) -2.7 d) 2.7 e) 3.1 f) -3.1 g) 3.6 h) -3.6 1) 4.0 3) -4.0 k) None of the above 13) The null hypothesis is to be tested at the 18 level of significance. The null hypothesis should be: a) rejected b) not rejected c) impossible to determine