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Question 6 1 pts A researcher uses a = 0.05. If Ho is true, what is the probability of a Type I error? 0 7 0.0 &bio.os 6 0 4 0.05 O d| 0.025 Question 7 1 pts If two samples, with ny = 15 and ny = 15, are being used to estimate the mean difference between their two populations, what values of tran would be used to construct a 95% confidence interval? 0 2 12.743 Obj $2 145 0 0 12.048 o d =1701 0 2) 11.741 Question 8 1 pts Two important advantages of increasing sample size in a hypothesis test are: 2 a decreases and the sampling distribution is more likely to be normal 0 bi A decreases and the sampling distribution Is more likely to be normal o c a decreases and the raw population is more likely to be normal. o di A decreases and the raw population Is more likely to be normal. Question 9 1 pts In all hypothesis tests we have studied, the basic underlying goal is to 0 7 minimbe the value of 1-4. Q bj calculate and document differences In sample means. o c/ determine whether there Is significant varlabliity In the sample. ad To determine whether there Is a significant effect in the sample of Interest o 9) To provide evidence for whether the population of Interest Is different In some Important respect from the population assumed under Ho. Question 10 1 pts If each subject is to serve in both conditions of an experiment, then the order in which conditions are experienced should be counterbalanced Q bj controlled 0 @ randomized o dj held constant