- D Question 8 1 Pts Scenario B A Researcher Is Interested In Studying Whether A New App Can Help Improve First Graders 1 (74.78 KiB) Viewed 16 times
- D Question 8 1 Pts Scenario B A Researcher Is Interested In Studying Whether A New App Can Help Improve First Graders 2 (69.06 KiB) Viewed 16 times
- D Question 8 1 Pts Scenario B A Researcher Is Interested In Studying Whether A New App Can Help Improve First Graders 3 (36.34 KiB) Viewed 16 times
- D Question 8 1 Pts Scenario B A Researcher Is Interested In Studying Whether A New App Can Help Improve First Graders 4 (47.68 KiB) Viewed 16 times
- D Question 8 1 Pts Scenario B A Researcher Is Interested In Studying Whether A New App Can Help Improve First Graders 5 (48.71 KiB) Viewed 16 times
- D Question 8 1 Pts Scenario B A Researcher Is Interested In Studying Whether A New App Can Help Improve First Graders 6 (48.88 KiB) Viewed 16 times
1 pts Scenario B. A researcher is interested in studying whether a new app can help improve first graders' reading skills. She recruits two first grade classes from a local elementary school: classroom 1 uses the app for 30 minutes each day and classroom 2 does not use the app. She compares their reading ability at the end of the school year and expects reading ability to improve in the group that used the app What would be a type Il error for this scenario? O The researcher concludes that reading skills were the same for the group that used the app and for the group that did not use the app, when in reality the reading skills were the same for both groups. O The researcher concludes that reading skills were higher (better) for the group that used the app than for the group that did not use the app, when in reality the reading skills better for the group that used the app. O The researcher concludes that reading skills were the same for the group that used the app and for the group that did not use the app, when in reality the reading skills were better for the kids who used the app. O The researcher concludes that reading skills were higher (better) for the group that used the app than for the group that did not use the app, when in reality the reading skills were the same or worse for the kids who used the app.
on 10 Scenario C. David sees an ad for a new kind of running shoe that promises to improve speed when running short distances. He decides to test this out. He compares his speed when running a mile with the new shoes to his speed when running a mile in the old shoes. His goal is to test whether the new shoes help him run faster. Is this a directional or non-directional hypothesis? O Directional 0.25 pts O Non-Directional
Scenario C. David sees an ad for a new kind of running shoe that promises to improve speed when running short distances. He decides to test this out. He compares his speed when running a mile with the new shoes to his speed when running a mile in the old shoes. His goal is to test whether the new shoes help him run faster. What is the null hypothesis for this scenario? OHO: David will run the mile in the same amount of time the new shoes as with his old shoes. OHO: David will run the mile faster in the new shoes than with his old shoes. OHO: David will run the mile slower in the new shoes than with his old shoes. OHO: David will run the mile in the same amount of time or slower in the new shoes than with his old shoes. O HO: David will run the mile in the same amount of time or faster in the new shoes than with his old shoes.
0.25 pts Scenario C. David sees an ad for a new kind of running shoe that promises to improve speed when running short distances. He decides to test this out. He compares his speed when running a mile with the new shoes to his speed when running a mile in the old shoes. His goal is to test whether the new shoes help him run faster. What is the alternative hypothesis for this scenario? O H1: David will run the mile slower in the new shoes than with his old shoes. OH1: David will run the mile in the same amount of time or slower in the new shoes than with his old shoes. OH1: David will run the mile in the same amount of time or faster in the new shoes than with his old shoes. O H1: David will run the mile faster in the new shoes than with his old shoes. O H1: David will run the mile in the same amount of time new shoes as with his old shoes. O H1: David will run the mile at a different speed in the new shoes than with his old shoes.
0.25 pts Scenario D. A researcher is interested in examining if the amount of money spent on groceries purchased via Amazon Prime has changed in the last 2 years. What is the null hypothesis for this scenario? O Ho: The amount of money spent on groceries has changed in the last 2 years. O Ho: The amount of money spent on groceries has decreased in the last 2 years. O Ho: The amount of money spent on groceries has decreased or stayed the same in the last 2 years. O Ho: The amount of money spent on groceries has increased or stayed the same in the last 2 years. O Ho: The amount of money spent on groceries has not changed in the last 2 years. O Ho: The amount of money spent on groceries has increased in the last 2 years.