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How many degrees of freedom are associated with a multiple regression model involving K predictors Points: 2.5 and n observations when running a t-test for the individual coefficients? A n - K+1 n - K - 1 C n - K D K - 1 E None of the suggested answers are correct2 Which one of the following is true? Points: 2.5 (A) The p-value of a test is the probability that the null hypothesis is true 0 A null hypothesis is rejected at the 0.025 level but is not rejected at the 0.01 level. This means that the p- value of the test is between 0.01 and 0.025. The signicance level of a test is the probability that the null hypothesis is false. None of the suggested answers are correct If a null hypothesis is rejected against an alternative at the 5% level, then using the same data, it must be rejected against that alternative at the 1% level. @@@ 3 Suppose that the probability of a small business failing in 2021 is 0.25. That means that the odds of a Points: 2.5 business actually succeeding is 3to1 @ 1t03 None of the suggested answers are correct at least 1 to 3 At most 3to1 @ 5 What is the zvalue for a two-sided test of hypothesis for a population mean when the probability of Points: 2.5 rejecting a true null hypothesis is equal to 0.01? G) 2.330 2.575 G?) None of the suggested answers are correct 6 Suppose you want to test the mean of quiz scores He : y 2 72 versus H,- : y