Question

Q1.Pick the option which correctly completes the statement.

All other things being equal, bigger sample sizes give:

a) wider confidence intervals.

b) narrower confidence intervals.

Q2. Pick the option which correctly completes the statement.

The P-value measures the strength of evidence:

a) against the null hypothesis.

b) against the alternative hypothesis.

Q3. Pick the option which correctly completes the statement.

When conducting an F-test for one-way analysis of variance, if the variability between that sample or group means is small compared to the variability within the samples or groups then the data:

a) would provide evidence against the null hypothesis.

b) would not provide evidence against the null hypothesis.

Q4. Pick the option which correctly completes the statement.

A Chi-square test is concerned with the relationship between two:

a) numeric variables.

b) categorical variables.

Q5. Pick the option which correctly completes the statement.

A confidence interval for the mean value of Y for a given value of x takes in to account:

a) the variation in the fitted line from sample to sample and the variation in individuals in the population with the given value of x.

b) the variation in the fitted line from sample to sample.

Answer 1

Que.1 (b) narrower confidence intervals.

Que.2 (a) against the null hypothesis.

Que.3 (b) would not provide evidence against the null hypothesis.

Que.4 (b) categorical variables.

This is true according to theory. Chi-square test is used for categorical variables.

Que.5 (a) the variation in the fitted line from sample to sample and the variation in individuals in the population with the given value of x.

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