The confidence level is denoted by alpha or a refers to the degree of significance in which we accept or reject the null hypothesis. Your answer When the computed t or z value is at the right of the critical value, rejecting the null hypothesis is correct. (given the alternative hypothesis uses the phrase "higher than") Your answer Alternative hypothesis is a claim that denotes an presence of difference presence of relationship or inequality to a certain value. Your answer One-tailed test is a test where Ha specifies a directional difference for the parameter of interest. Your answer

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