1) Select the independent sample a) Researchers want to test a new anti-hunger weight loss pill. They have 10 people rate their hunger both before and after taking the pill. Does the pill do anything. b) Mary randomly selects the king of hearts from a deck of cards. She then replaces the card and again selects one card from the deck. The selection of the second card is a(n)_________ event. c) Sample the blood pressures of the same people before and after they receive a dose.  2) Which criteria helps you identify independent samples? a) 2 populations occur. First sample does not determine the data for the second sample. b) The population in the first sample determines the data for the population of the second sample 3) The Republic of Polus reports that the proportion of red Polus aliens that are imposters is 32.4% while the proportion of purple Polus aliens that are imposters is 69.3%. Assume that the sample sizes used were 1000 each. Test whether the proportions differ. Define the parameters and hypotheses. a) p1=the proportion of red Polus aliens who are imposters, p2=the proportion of purple polus aliens who are imposters, Ho: Pr=Pp, Ha: Pr>Pp b) p1=the proportion of red Polus aliens who are imposters, p2=the proportion of purple polus aliens who are imposters, Ho: Pr=Pp, Ha: Pr<Pp c) p1=the proportion of red Polus aliens who are imposters, p2=the proportion of purple polus aliens who are imposters, Ho: Pr=Pp, Ha: Pr≠Pp 4) State the procedure and verify the conditions a) Procedure: t-test. Conditions: Assume all conditions met. b) Procedure: 2 sample t-test. Conditions: Assume all conditions met. c) Procedure: 2 prop z-test. Conditions: Assume all conditions met. 5)  Find the z and p values. a) z value=-16.505, p value=3.6013* 10^-61 b) z value=-16.505, p value=0.567 c) z value=-16.505, p value=3.4781* 10^-5 6) Test weather the p-value is less than alpha, which equals 0.10. a) p<0.10. We reject Ho. We have significant evidence to support that the population proportion of red Polus aliens who are imposters differs from the proportion of purple Polus aliens who are imposters. b) p>0.10. We fail to reject Ho. We do not have significant evidence to support that the population proportion of red Polus aliens who are imposters differs from the proportion of purple Polus aliens who are imposters. 7) Men’s Wearhouse institutes a thirty minute break for its employees to see if it will improve job satisfaction as measured by a survey that assesses worker satisfaction. Ten workers were randomly selected, and their scores are shown in the table below. Men’s Wearhouse is assessing how effective the break is. Is this sample dependent or independent? a) Independent b) Dependent 8) Find a 90% confidence interval for mean differences between the math pretest and the math final for 10 senior students.  a) Independent b) Dependent 9) Define the parameters and hypotheses. a) Mdiff=mean difference in math pretest and final scores in 12th grade students  b) Mdiff=parameter of pretest and final scores of 12th grade students 10) State the procedure and verify the conditions a) T-test; all conditions are met b) Z-test, all conditions met c) 90% confidence interval, assume all conditions are met 11) Which equation is for the confidence interval  a) b) 12) If the p-value is greater then alpha then.... a) We fail to reject the hypothesis b) We reject the hypothesis  c) At least 25% of American men and American women belong to sports clubs. 13) Assume the cholesterol levels in a certain population have mean μ= 200 and standard deviation σ = 24. The cholesterol levels for a random sample of n = 9 individuals are measured and the sample mean x is determined. What is the z-score for a sample mean x = 180? a) –3.75 b) –2.50 c) −0.83 d) 2.50 14) Null and alternative hypotheses are statements about: a) population parameters. b) sample means c) sample parameters. 15) A hypothesis test is done in which the alternative hypothesis is that more than 10% of a population is left-handed. The p-value for the test is calculated to be 0.25. Which statement is correct? a) We reject that more than 10% of the population is left-handed. b) We fail to reject that more than 10% of the population is left-handed. c) .10 16) You conduct a significance test for the population proportionand your p-value is 0.184. Alpha is 0.10. which of the following should be your conclusion? a) accept HO b) accept HA c) Fail to reject HA d) Fail to reject HO e) Reject HO f) A 17) Our P value is 0.044, alpha is .10 we would... a) Fail to reject HO b) Reject HO c) Accept HA 18) A significance test is... (independent variables) a) 2-prop t test b) 2-samp t test 19) Independent confidence intervals in the calculator are.... a) 2-prop t interval b) 2-samp t interval c) 2-samp t test 20) Dependent variables are.... a) The difference in means (2 means and populations) b) The mean difference. 

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