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1: For a sample size of n = 100, and = 10, we want to test the hypothesis H0: = 100. The sample mean is

1: For a sample size of n = 100, and = 10, we want to test the hypothesis H0: = 100. The sample mean is 103. The test statistic is: a) 1.645 b) 1.960 c) 3.000 d) 0.300 Q2: Which of the following is not a characteristic of the t distribution? a) It is a continuous distribution. B) It has a mean of 0. C) It is a symmetric distribution. D) It is similar to the z distribution when n is small. Q3: the process that produces Sonora bars (a type of candy) is intended to produce bars with a mean weight of 56 g. the process population standard deviation is known to be 0.77 gm. A random sample of 49 candy bars yields a mean weight of 55.82 gm. Which are the hypotheses to test whether the mean is smaller than it is supposed to be? A)Ho: 56, Ha: > 56 C) Ho: =56, Ha: 56 B) Ho: 56, Ha: <56 D) Ho: < 56, Ha: 56 Q4 In a left (one tailed) test, a statistician got a z test 1.720. what is the p value? a)0.4292 B)0.0427 C)0.0709 D) 0.0301 Q5 Alpha () is a) Equal to the probability of committing a type I error. b) Called the test's significance level c) The probability of rejecting Ho when it is really true d) All the above are true Q5 Given the following information, if the hypothesis test is conducted at the 1%level of x = 73 significance, the null hypothesis should n=16 s=8.246 Ho: 80 Ha: <80 \f\f

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