CNSL 503 MODULE 3 ACTUAL EXAM PAPER
2026 QUESTIONS WITH ANSWERS
GRADED A+
◍ central limit theorem.
Answer: It should be noted that the mean of the distribution of sample
means for these data is equivalent to that of the population mean.
◍ What does a value in the critical region indiact?.
Answer: that it is unlikely that the treated sample is the same as the
untreated population, thus providing evidence that the null hypothesis
should be rejected.
◍ probability.
Answer: the likelihood of a certain outcome occurring
◍ Alternative hypothesis.
Answer: (Ha) states that the treatment does cause a change or difference in
the population parameter. If the mean exam score for Group 1 is greater than
the mean exam score for Group 2, then the researcher's study may support
the claim that the new study strategy does increase memory retention when
compared to traditional strategies.
◍ Stratified sampling.
Answer: a type of random sampling used when a population can be divided
into subgroups called strata. It involves randomly gathering data from
subgroups within a sample. Strata such as race, gender, and socioeconomic
status are clearly defined.
◍ Type I error.
Answer: false positive; occur when the researcher rejects H0 (the null
hypothesis) when it is actually true. To reduce the chance of a Type I error,
, researchers must set an appropriate alpha level. In fact, the chance of a Type
I error equals the alpha level of the study.
◍ As the number of samples ________ toward infinity, the sample mean
approaches the __________..
Answer: increase; population mean (thus making them equal)
◍ relative frequency method.
Answer: which involves performing numerous observations of a given
situation and recording the number of times the event occurs. A frequency
distribution graph can be used to display the distribution of scores
◍ Significance level.
Answer: The criterion for deciding whether the ρ-value is "small enough" to
reject the null hypothesis
◍ What are the two main types of errors?.
Answer: type I error (false positive)type II error (false negative)
◍ Selection bias.
Answer: occurs if those who respond or participate in a study are not a truly
representative sample of the population.
◍ What does it mean if the null hypothesis is rejected?.
Answer: There is evidence to support that the new study strategy affect
memory retention.
◍ Distribution of sample means.
Answer: the most common sampling statistic represented in a sampling
distribution. It is the frequency distribution of each mean from all possible
samples of a given size (η) from a population.
◍ What is hypothesis testing?.
Answer: the process by which the claim is tested using a carefully selected
sampling method, gathering data, calculating statistical values and
probability values, and drawing a conclusion.
◍ What is the formula for probability?.
2026 QUESTIONS WITH ANSWERS
GRADED A+
◍ central limit theorem.
Answer: It should be noted that the mean of the distribution of sample
means for these data is equivalent to that of the population mean.
◍ What does a value in the critical region indiact?.
Answer: that it is unlikely that the treated sample is the same as the
untreated population, thus providing evidence that the null hypothesis
should be rejected.
◍ probability.
Answer: the likelihood of a certain outcome occurring
◍ Alternative hypothesis.
Answer: (Ha) states that the treatment does cause a change or difference in
the population parameter. If the mean exam score for Group 1 is greater than
the mean exam score for Group 2, then the researcher's study may support
the claim that the new study strategy does increase memory retention when
compared to traditional strategies.
◍ Stratified sampling.
Answer: a type of random sampling used when a population can be divided
into subgroups called strata. It involves randomly gathering data from
subgroups within a sample. Strata such as race, gender, and socioeconomic
status are clearly defined.
◍ Type I error.
Answer: false positive; occur when the researcher rejects H0 (the null
hypothesis) when it is actually true. To reduce the chance of a Type I error,
, researchers must set an appropriate alpha level. In fact, the chance of a Type
I error equals the alpha level of the study.
◍ As the number of samples ________ toward infinity, the sample mean
approaches the __________..
Answer: increase; population mean (thus making them equal)
◍ relative frequency method.
Answer: which involves performing numerous observations of a given
situation and recording the number of times the event occurs. A frequency
distribution graph can be used to display the distribution of scores
◍ Significance level.
Answer: The criterion for deciding whether the ρ-value is "small enough" to
reject the null hypothesis
◍ What are the two main types of errors?.
Answer: type I error (false positive)type II error (false negative)
◍ Selection bias.
Answer: occurs if those who respond or participate in a study are not a truly
representative sample of the population.
◍ What does it mean if the null hypothesis is rejected?.
Answer: There is evidence to support that the new study strategy affect
memory retention.
◍ Distribution of sample means.
Answer: the most common sampling statistic represented in a sampling
distribution. It is the frequency distribution of each mean from all possible
samples of a given size (η) from a population.
◍ What is hypothesis testing?.
Answer: the process by which the claim is tested using a carefully selected
sampling method, gathering data, calculating statistical values and
probability values, and drawing a conclusion.
◍ What is the formula for probability?.
