CNSL 503 MOD 4 CERTIFIED QUALITY EXAM 2025/2026
VERIFIED QUESTIONS AND ACCURATE DETAILED SOLUTIONS
A+ SCORE REVIEW
Critical region
Represents sample values that are unlikely to occur if the
treatment doesn't have an effect (if z-score is in critical region,
reject null hypothesis)
Two-tailed test
Hypothesis test stating there will be change in the mean; the
treatment will have some effect on the population mean (not
specific on increase or decrease, just indicates change present)
(alpha values) two-tailed critical values: 0.05-1.96
1.96
(alpha values) two-tailed critical values: 0.01-2.58
2.58
(alpha values) two-tailed critical values: 0.001-3.30
3.30
, (alpha values) one-tailed critical values: 0.05
+ - 1.65
(alpha values) one-tailed critical values: 0.01
+ - 2.33
(alpha values) one-tailed critical values: 0.001
+-3.10
Apa format for reporting
Z= p=<> alpha value. Number of tails
Confidence interval
Range of values likely to contain the true population mean. The
95% c.i. is most common.
Importance of measuring effect size?
VERIFIED QUESTIONS AND ACCURATE DETAILED SOLUTIONS
A+ SCORE REVIEW
Critical region
Represents sample values that are unlikely to occur if the
treatment doesn't have an effect (if z-score is in critical region,
reject null hypothesis)
Two-tailed test
Hypothesis test stating there will be change in the mean; the
treatment will have some effect on the population mean (not
specific on increase or decrease, just indicates change present)
(alpha values) two-tailed critical values: 0.05-1.96
1.96
(alpha values) two-tailed critical values: 0.01-2.58
2.58
(alpha values) two-tailed critical values: 0.001-3.30
3.30
, (alpha values) one-tailed critical values: 0.05
+ - 1.65
(alpha values) one-tailed critical values: 0.01
+ - 2.33
(alpha values) one-tailed critical values: 0.001
+-3.10
Apa format for reporting
Z= p=<> alpha value. Number of tails
Confidence interval
Range of values likely to contain the true population mean. The
95% c.i. is most common.
Importance of measuring effect size?
