Scenario B. A researcher is interested in studying if owning a tablet decreases children's social skills. She provides 7 year old children with a tablet for 2 months and compares their social skills before and after the two month period..Is this a directional or non-directional hypothesis?

Group of answer choices

Directional

Non-Directional

Flag question: Question 6

Question 6 0.25 pts

Scenario B. A researcher is interested in studying if owning a tablet decreases children's social skills. She provides 7 year old children with a tablet for 2 months and compares their social skills before and after the two month period. What is the null hypothesis for this scenario?

Flag question: Question 7

Question 7 0.5 pts

Scenario B. A researcher is interested in studying if owning a tablet decreases children's social skills. She provides 7 year old children with a tablet for 2 months and compares their social skills before and after the two month period.. What is the alternative hypothesis for this scenario?

Flag question: Question 8

Question 8 1 pts

Scenario B. A researcher is interested in studying if owning a tablet decreases children's social skills. She provides 7 year old children with a tablet for 2 months and compares their social skills before and after the two month period. What would be a type I error for this scenario?

Group of answer choices

The researcher concludes that social skills did not decrease after owning a tablet, when in reality it did not change.

The researcher concludes that social skills decrease after owning a tablet, when in reality it did not change.

The researcher concludes that social skills did not decrease after owning a tablet, when in reality they did decrease.

The researcher concludes that social skills decrease after owning a tablet, when in reality they did decrease.

Flag question: Question 9

Question 9 1 pts

Scenario B. A researcher is interested in studying if owning a tablet decreases children's social skills. She provides 7 year old children with a tablet for 2 months and compares their social skills before and after the two month period What would be a type II error for this scenario?

Group of answer choices

The researcher concludes that social skills did not decrease after owning a tablet, when in reality they did decrease.

The researcher concludes that social skills decrease after owning a tablet, when in reality they did decrease.

The researcher concludes that social skills decrease after owning a tablet, when in reality it did not change.

The researcher concludes that social skills did not decrease after owning a tablet, when in reality it did not change.

Flag question: Question 10

Question 10 0.25 pts

Scenario C. David sees an ad for a new laundry detergent (StainMaster) that promises to remove stains better than other brands. He decides to test this out by comparing the number of stains on his son's soccer uniform with the new brand and with the old brand. His goal is to test whether StainMaster removes stains BETTER than his old brand.

Is this a directional or non-directional hypothesis?

Group of answer choices

Directional

Non-Directional

Flag question: Question 11

Question 11 0.25 pts

Scenario C. David sees an ad for a new laundry detergent (StainMaster) that promises to remove stains better than other brands. He decides to test this out by comparing the number of stains on his son's soccer uniform with the new brand and with the old brand. His goal is to test whether StainMaster removes stains BETTER than his old brand. What is the null hypothesis for this scenario?

Group of answer choices

H0: Number of stains with StainMaster

Number of stains with the old detergent

H0: Number of stains with StainMaster

Number of stains with the old detergent

H0: Number of stains with StainMaster < Number of stains with the old detergent

H0: Number of stains with StainMaster > Number of stains with the old detergent

Flag question: Question 12

Question 12 0.25 pts

Scenario C. David sees an ad for a new laundry detergent (StainMaster) that promises to remove stains better than other brands. He decides to test this out by comparing the number of stains on his son's soccer uniform with the new brand and with the old brand. His goal is to test whether StainMaster removes stains BETTER than his old brand. What is the alternative hypothesis for this scenario?

Group of answer choices

H1: Number of stains with StainMaster

Number of stains with the old detergent

H1: Number of stains with StainMaster < Number of stains with the old detergent

H1: Number of stains with StainMaster = Number of stains with the old detergent

H1: Number of stains with StainMaster

Number of stains with the old detergent

H1: Number of stains with StainMaster

Number of stains with the old detergent

H1: Number of stains with StainMaster > Number of stains with the old detergent

Flag question: Question 13

Question 13 1 pts

Scenario C. David sees an ad for a new laundry detergent (StainMaster) that promises to remove stains better than other brands. He decides to test this out by comparing the number of stains on his son's soccer uniform with the new brand and with the old brand. His goal is to test whether StainMaster removes stains BETTER than his old brand. What would be a Type I error for this scenario?

Flag question: Question 14

Question 14 1 pts

Scenario C. David sees an ad for a new laundry detergent (StainMaster) that promises to remove stains better than other brands. He decides to test this out by comparing the number of stains on his son's soccer uniform with the new brand and with the old brand. His goal is to test whether StainMaster removes stains BETTER than his old brand. What would be a type II error for this scenario?

Flag question: Question 15

Question 15 0.25 pts

Scenario D. A researcher is interested in examining whether the number of hours teenagers use social media is higher or lower after the pandemic than it was before the pandemic. Should we test this using a directional or non-directional hypothesis?

Group of answer choices

Directional

Non-Directional

Flag question: Question 16

Question 16 0.25 pts

Scenario D. A researcher is interested in examining whether the number of hours teenagers use social media is higher or lower after the pandemic than it was before the pandemic. What is the null hypothesis for this scenario?

Group of answer choices

H₀: Social media use will not change after the pandemic.

H₀: Social media use will decrease after the pandemic.

H₀: Social media use will change after the pandemic.

H₀: Social media use will increase after the pandemic.

H₀: Social media use will be the same or lower after the pandemic.

Flag question: Question 17

Question 17 0.25 pts

Scenario D. A researcher is interested in examining whether the number of hours teenagers use social media is higher or lower after the pandemic than it was before the pandemic. What is the alternative hypothesis for this scenario?

Group of answer choices

H1: Social media use will increase after the pandemic.

H1: Social media use will decrease after the pandemic.

H1: Social media use will not change after the pandemic.

H1: Social media use will change after the pandemic.

Flag question: Question 18

Question 18 0.5 pts

Scenario D. A researcher is interested in examining whether the number of hours teenagers use social media is higher or lower after the pandemic than it was before the pandemic. What is a type I error for this scenario?

Group of answer choices

The researcher concludes that social media use changes after the pandemic, when in reality it did not change.

The researcher concludes that social media use did not change after the pandemic, when in reality it did change.

The researcher concludes that social media use changes after the pandemic, when in reality it did change.

The researcher concludes that social media use did not change after the pandemic, when in reality it did not change.

Flag question: Question 19

Question 19 0.5 pts

Scenario D. A researcher is interested in examining whether the number of hours teenagers use social media is higher or lower after the pandemic than it was before the pandemic. What is a type II error for this scenario?

Group of answer choices

The researcher concludes that social media use did not change after the pandemic, when in reality it did change.

The researcher concludes that social media use changes after the pandemic, when in reality it did change.

The researcher concludes that social media use changes after the pandemic, when in reality it did not change.

The researcher concludes that social media use did not change after the pandemic, when in reality it did not change.