1 Scenario A.A researcher is interested in understanding how a company's work from home policy will influence worker productivity, so she compares two companies. Company 1, Vance Refrigeration, allows employees to work from home only 3 days per week. Company 2, Dunder Mifflin Paper Company, has a policy in which employees can choose to work either 100% from home or 100% in the office. Employees who have elected to work from home cannot work in the office and vice versa.What is the null hypothesis for this scenario?

Group of answer choices

H₀:Productivity at company 1 < productivity at company 2

H₀: Productivity at company 1 productivity at company 2

H₀:Productivity at company 1 > productivity at company 2

H₀: Productivity at company 1 = productivity at company 2

2 Scenario A.A researcher is interested in understanding how a company's work from home policy will influence worker productivity, so she compares two companies. Company 1, Vance Refrigeration, allows employees to work from home only 3 days per week. Company 2, Dunder Mifflin Paper Company, has a policy in which employees can choose to work either 100% from home or 100% in the office. Employees who have elected to work from home cannot work in the office and vice versa.What is the alternative hypothesis for this scenario? Pay attention to whether it is directional or non-directional

Group of answer choices

H1: Productivity at company 1 < productivity at company 2

H1: Productivity at company 1 > productivity at company 2

H1: Productivity at company 1 productivity at company 2

H1: Productivity at company 1 productivity at company 2

H1: Productivity at company 1 = productivity at company 2

H1: Productivity at company 1 productivity at company 2

3 Scenario A.A researcher is interested in understanding how a company's work from home policy will influence worker productivity, so she compares two companies. Company 1, Vance Refrigeration, allows employees to work from home only 3 days per week. Company 2, Dunder Mifflin Paper Company, has a policy in which employees can choose to work either 100% from home or 100% in the office. Employees who have elected to work from home cannot work in the office and vice versa. What would be a type I error for this scenario? See the example question for guidance!

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4 Scenario A.A researcher is interested in understanding how a company's work from home policy will influence worker productivity, so she compares two companies. Company 1, Vance Refrigeration, allows employees to work from home only 3 days per week. Company 2, Dunder Mifflin Paper Company, has a policy in which employees can choose to work either 100% from home or 100% in the office. Employees who have elected to work from home cannot work in the office and vice versa.What would be a type II error for this scenario?

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5 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

6 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?

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7 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?

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8 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 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 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 they did decrease.

9 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 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 it did not change.

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

10 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

11 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

12 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

13 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?

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14 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?

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15 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

Non-Directional

Directional

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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.

17 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 decrease after the pandemic.

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

H1: Social media use will change after the pandemic.

H1: Social media use will increase after the pandemic.

1Scenario 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 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 change.

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

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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 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.

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.