NSG-522 MIDTERM EXAM ACTUAL

NSG-522 MIDTERM EXAM (ACTUAL / )

WITH QUESTIONS AND 1 VERIFIED ANSWERS

The frequency and relative frequency presented as a percentage should both be reported when describing interval level data False

What type of graphic display would be the best for a variable measured at the ordinal data?Histogram

When alpha is set at .05, only p-value of <.05 or >.95 are statistically significant False

A nurse researcher compares two interventions for preventing CAUTI in an academic medical center. A statistical test 1 / 3

comparing the number of infections in the two groups yields a p-value of 0.10. This p-value means that.

• There is a statistically significant difference between the

two groups.B.A larger sample is needed to to determine statistical significance

• The difference is clinically but not statistically significant
• There is not a statistically significant difference between

the groups There is not a statistically significant difference between the groups

Which of the following samples would provide the best representation of a population

• A nonprobability sample
• A quota sample
• A simple random sample
• A convenience sample
• A simple random sample

• / 3

When performing a hypothesis test to compare groups, a type

• error is made when a researcher

• Rejects the alternative hypothesis
• Concludes that there is a significant difference between

groups when there really is not a difference

• Accepts the null hypothesis
• Concludes that there is not a statistically significant

difference when there really is a difference

• Concludes that there is a significant difference between

groups when there really is not a difference

When performing a hypothesis test, a type 2 error occurs when the researcher incorrectly

• Accepts the alternative hypothesis
• Concludes that the findings are not statistically significant
• Rejects the null hypothesis
• Concludes that the findings are statistically significant
• Concludes that the findings are not statistically significant

A 95% confidence interval for a mean indicates

• / 3