# Question: A What is the critical region b What is the

a. What is the critical region?

b. What is the critical value?

b. What is the critical value?

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a. Verify that a 95% level of confidence requires a 1.96-standard-deviation interval. b. Verify that the level of confidence for a 2-standard-deviation interval is 95.45%. Determine the critical region and the critical values used to test the following null hypotheses: a. Ho: µ = 55 ( ≥), Ha: µ < 55, a = 0.02 b. Ho: m__86 ( ≥), Ha: µ < 86, a = 0.01 c. Ho: µ = 107, Ha: µ = 107, a = ...a. What proportion of the probability distribution is in the critical region, provided the null hypothesis is correct? b. What error could be made if the test statistic falls in the critical region? c. What proportion of ...Find the level of confidence assigned to an interval estimate of the mean formed using the following intervals: The standard deviation of a normally distributed population is equal to 10. A sample size of 25 is selected, and its mean is found to be 95. a. Find an 80% confidence interval for m. b. What would the 80% confidence ...Post your question