STATISTICS PORTAGE CNSL 503 CERTIFICATION SCRIPT
2026 QUESTIONS WITH SOLUTIONS GRADED A+
● Hypothesis Testing. Answer: Formal decision procedure
● Null Hypothesis. Answer: H0 no effect or difference
● Alternative Hypothesis. Answer: H1 or Ha claim being tested
● One-Tailed Test. Answer: Directional alternative hypothesis
● Two-Tailed Test. Answer: Non-directional alternative
● Left-Tailed Test. Answer: Less-than alternative
● Right-Tailed Test. Answer: Greater-than alternative
● Test Statistic. Answer: Calculated value for decision
● P-Value. Answer: Probability of results given null true
● Significance Level. Answer: Alpha threshold for rejection
● Reject Null Hypothesis. Answer: P-value less than alpha
● Fail to Reject Null. Answer: P-value greater than alpha
● Type I Error. Answer: Rejecting true null hypothesis
● Type II Error. Answer: Failing to reject false null
● Alpha. Answer: Probability of Type I error
● Beta. Answer: Probability of Type II error
● Power. Answer: 1 minus beta probability correct rejection
● Effect Size. Answer: Magnitude of difference or relationship
● Statistical Significance. Answer: Formal rejection of null
2026 QUESTIONS WITH SOLUTIONS GRADED A+
● Hypothesis Testing. Answer: Formal decision procedure
● Null Hypothesis. Answer: H0 no effect or difference
● Alternative Hypothesis. Answer: H1 or Ha claim being tested
● One-Tailed Test. Answer: Directional alternative hypothesis
● Two-Tailed Test. Answer: Non-directional alternative
● Left-Tailed Test. Answer: Less-than alternative
● Right-Tailed Test. Answer: Greater-than alternative
● Test Statistic. Answer: Calculated value for decision
● P-Value. Answer: Probability of results given null true
● Significance Level. Answer: Alpha threshold for rejection
● Reject Null Hypothesis. Answer: P-value less than alpha
● Fail to Reject Null. Answer: P-value greater than alpha
● Type I Error. Answer: Rejecting true null hypothesis
● Type II Error. Answer: Failing to reject false null
● Alpha. Answer: Probability of Type I error
● Beta. Answer: Probability of Type II error
● Power. Answer: 1 minus beta probability correct rejection
● Effect Size. Answer: Magnitude of difference or relationship
● Statistical Significance. Answer: Formal rejection of null
