York

2021-10-22

For each of the following scenarios, select the test (from the choices below), that is most appropriate for analyzing the data.

a) Z-test

b) One-sample t-test

c) Independent t-test

d) Dependent t-test

e) 1-Way ANOVA

f) Regression/Correlation

g) Chi-Square

1. Does caffeine help test performance? 90 participants are randomly assigned to one of 4 groups (no caffeine, small dose, medium dose, and large dose) and then asked to complete a GRE math section.

2. Do seniors study for fewer hours per week than freshmen?

3. Is the average SAT math score of Hunter College students higher than the national average

Nola Robson

Skilled2021-10-23Added 94 answers

Step 1

1.

e) 1-Way ANOVA

A 1-way ANOVA is used to compare the means of more than two independents groups in order to find out the means of the groups are significantly different from each other.

A 1-way ANOVA is used for the given scenario because the levels of caffeine are more than two. That is, (no caffeine, small does, medium does and large dose). After the test, the scores will be collected for each group and then a 1-way ANOVA test will be carried out to find whether caffeine really helps in test performance by comparing the means of four groups. A significant P-value results in the rejection of hypothesis and concludes that the caffeine helps in the test performance at a given level of significance.

Thus, 1-way ANOVA suits the given experiment.

Step 2

2.

c) Independent t-test:

This test can be used to determine whether there is a significant difference between the mean of two independent groups or samples.

Independent sample t-test can be used for the given scenario since there are two different groups (seniors and freshmen) and the test aims to compare the mean number of hours of study per week between seniors and freshmen and the test is carried out by comparing the two means. A significant P-value concludes that seniors study for fewer hours per week than freshmen.

Step 3

3.

b) One-sample t-test:

A one sample t test is used to find out whether a sample mean with the hypothesized population mean.

Here, the average SAT math score obtained from the sample will be tested using the population mean SAT math score 500. A significant P-value results in the rejection of hypothesis and concludes that the average SAT math score of Hunter College students is higher than the national average at a given level of significance.

1.

e) 1-Way ANOVA

A 1-way ANOVA is used to compare the means of more than two independents groups in order to find out the means of the groups are significantly different from each other.

A 1-way ANOVA is used for the given scenario because the levels of caffeine are more than two. That is, (no caffeine, small does, medium does and large dose). After the test, the scores will be collected for each group and then a 1-way ANOVA test will be carried out to find whether caffeine really helps in test performance by comparing the means of four groups. A significant P-value results in the rejection of hypothesis and concludes that the caffeine helps in the test performance at a given level of significance.

Thus, 1-way ANOVA suits the given experiment.

Step 2

2.

c) Independent t-test:

This test can be used to determine whether there is a significant difference between the mean of two independent groups or samples.

Independent sample t-test can be used for the given scenario since there are two different groups (seniors and freshmen) and the test aims to compare the mean number of hours of study per week between seniors and freshmen and the test is carried out by comparing the two means. A significant P-value concludes that seniors study for fewer hours per week than freshmen.

Step 3

3.

b) One-sample t-test:

A one sample t test is used to find out whether a sample mean with the hypothesized population mean.

Here, the average SAT math score obtained from the sample will be tested using the population mean SAT math score 500. A significant P-value results in the rejection of hypothesis and concludes that the average SAT math score of Hunter College students is higher than the national average at a given level of significance.

22+64

When a cold drink is taken from a refrigerator, its temperature is 5 degree C. After 25 minutes in a 20 degree C room its temperature has increased to 10 degree C. What is the temperature of the drink after 50 minutes?

How many minutes are there in $2\frac{3}{5}$ hours?

Find the answer for $64$ power $\frac{1}{6}$.

The following law describes the relationship between gas volume and pressure: ________. A)Boyle's law; B)Henry's law; C)Charles' law; D)Dalton's law

If an electric switch is open then no current flows through the circuit.

A)True;

B)FalseThe price elasticity of supply of a good is 0.8. Its price rises by 50 per cent. Calculate the percentage increase in its supply.

How many quarts are in 10 gallons?

When the net force acting on an object is zero, the total momentum of the system will:

A)remain constant;

B)increase with time;

C)decrease with time;

D)None of theseHow many centimeters are in four meters?

A notebook computer has a mass of 2.25 kilograms. About how many pounds does the notebook weigh?

If the dot product of two non-zero vectors is zero, then the vectors A)are parallel to each other. B)are perpendicular to each other. C)can have any orientation. D)are anti-parallel to each other.

Which is longer 5 miles or 10 kilometers?

9 grams is how many milligrams?

How to write $673.5$ in scientific notation?