In an experiment, 17 babies were asked to watch a climber attempt to ascend a hill. On two occasions, the baby witnesses the climber fail to make the climb. Then, the baby witnesses either a he climber up the hil, or a hinderer toy preventing the climber from making the ascent. The toys were shown to each baby in a random fashion. A second part of this experiment showed the climber a toy, which is not a surprising action, and then the climber approached the hinderer toy, which is a surprising action. The amount of time the baby watched the event was recorded. The mean differ watching the climber approach the hinderer toy versus watching the climber approach the helper toy was 1.25 seconds with a standard deviation of 1.95 seconds. Complete parts a through c. (a) State the null and alternative hypotheses to determine if babies tend to look at the hinderer toy longer than the helper toy. Let Hg = Pninderer - Hneiper where Hninderer is the population mean time watching the climber approach the hinderer toy and Hneloer is the population mean time babies spend watching the climber approach the helper toy. O A. Ho: Ha <0 H1: Ha = 0 E · B. Ho: H = 0 H1: Hg #0 O C. Ho: Hg #0 H,: Ha = 0 O D. Ho: Ha >0 H: Hg = 0 O E. Ho: Ha =0 O F. Ho: Ha =0 H,: Hg > 0 H1: Hg <0 (b) Assuming the differences are normally distributed with no outliers, test if the difference in the amount of time the baby will watch the hinderer toy versus the helper toy is greater than 0 at the C significance. Find the test statistic for this hypothesis test. O(Round to two decimal places as needed.) Determine the P-value for this hypothesis test. O(Round to three decimal places as needed.) State the conclusion for this hypothesis test. O A. Do not reject Ho. There is sufficient evidence at the a = 0.10 level of significance to conclude that the difference is greater than 0. O B. Reject H,. There is sufficient evidence at the a = 0.10 level of significance to conclude that the difference is greater than 0. O C. Reject H. There is not sufficient evidence at the a = 0.10 level of significance to conclude that the difference is greater than 0. O D. Do not reject H,. There is not sufficient evidence at the a = 0.10 level of significance to conclude that the difference is greater than 0. (c) What do you think the results of this experiment imply about babies' ability to assess surprising behavior? O A. There is sufficient evidence that babies have the ability to assess surprising behavior. O B. The experiment does not imply anything about babies' ability to assess surprising behavior. O C. There is not sufficient evidence that babies have the ability to assess surprising behavior. O D. There is not sufficient evidence that babies do not have the ability to assess surprising behavior. O E. There is sufficient evidence that babies do not have the ability to assess surprising behavior.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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ISBN:9780547587776
Author:HOLT MCDOUGAL
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Chapter11: Data Analysis And Probability
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In an experiment, 17 babies were asked to watch a climber attempt to ascend a hill. On two occasions, the baby witnesses the climber fail to make the climb. Then, the baby witnesses either a he
climber up the hill, or a hinderer toy preventing the climber from making the ascent. The toys were shown to each baby in a random fashion. A second part of this experiment showed the climber a
toy, which is not a surprising action, and then the climber approached the hinderer toy, which is a surprising action. The amount of time the baby watched the event was recorded. The mean differe
watching the climber approach the hinderer toy versus watching the climber approach the helper toy was 1.25 seconds with a standard deviation of 1.95 seconds. Complete parts a through c.
(a) State the null and alternative hypotheses to determine if babies tend to look at the hinderer toy longer than the helper toy. Let Ha = Hninderer - Hneiper where Hhinderer is the population mean time
watching the climber approach the hinderer toy and uneiper is the population mean time babies spend watching the climber approach the helper toy.
O A. Ho: Ha <0
H1: Ha = 0
B. Ho: Hg = 0
H1: Ha #0
O C. Ho: Ha #0
H1: Ha = 0
O D. Ho: Ha > 0
O E. Ho: Ha = 0
OF. Ho: Ha =0
H1: Hg >0
H1: Ha = 0
H1: Ha <0
(b) Assuming the differences are normally distributed with no outliers, test if the difference in the amount of time the baby will watch the hinderer toy versus the helper toy is greater than 0 at the 0.
significance.
Find the test statistic for this hypothesis test.
(Round to two decimal places as needed.)
Determine the P-value for this hypothesis test.
(Round to three decimal places as needed.)
State the conclusion for this hypothesis test.
O A. Do not reject H,. There is sufficient evidence at the a = 0.10 level of significance to conclude that the difference is greater than 0.
O B. Reject Ho. There is sufficient evidence at the a = 0.10 level of significance to conclude that the difference is greater than 0
OC. Reject Hn. There is not sufficient evidence at the a = 0.10 level of significance to conclude that the difference is greater than 0.
O D. Do not reject Ho. There is not sufficient evidence at the a = 0.10 level of significance to conclude that the difference is greater than 0.
(c) What do you think the results of this experiment imply about babies' ability to assess surprising behavior?
O A. There is sufficient evidence that babies have the ability to assess surprising behavior.
O B. The experiment does not imply anything about babies' ability to assess surprising behavior.
OC. There is not sufficient evidence that babies have the ability to assess surprising behavior.
O D. There is not sufficient evidence that babies do not have the ability to assess surprising behavior.
O E. There is sufficient evidence that babies do not have the ability to assess surprising behavior.
Transcribed Image Text:In an experiment, 17 babies were asked to watch a climber attempt to ascend a hill. On two occasions, the baby witnesses the climber fail to make the climb. Then, the baby witnesses either a he climber up the hill, or a hinderer toy preventing the climber from making the ascent. The toys were shown to each baby in a random fashion. A second part of this experiment showed the climber a toy, which is not a surprising action, and then the climber approached the hinderer toy, which is a surprising action. The amount of time the baby watched the event was recorded. The mean differe watching the climber approach the hinderer toy versus watching the climber approach the helper toy was 1.25 seconds with a standard deviation of 1.95 seconds. Complete parts a through c. (a) State the null and alternative hypotheses to determine if babies tend to look at the hinderer toy longer than the helper toy. Let Ha = Hninderer - Hneiper where Hhinderer is the population mean time watching the climber approach the hinderer toy and uneiper is the population mean time babies spend watching the climber approach the helper toy. O A. Ho: Ha <0 H1: Ha = 0 B. Ho: Hg = 0 H1: Ha #0 O C. Ho: Ha #0 H1: Ha = 0 O D. Ho: Ha > 0 O E. Ho: Ha = 0 OF. Ho: Ha =0 H1: Hg >0 H1: Ha = 0 H1: Ha <0 (b) Assuming the differences are normally distributed with no outliers, test if the difference in the amount of time the baby will watch the hinderer toy versus the helper toy is greater than 0 at the 0. significance. Find the test statistic for this hypothesis test. (Round to two decimal places as needed.) Determine the P-value for this hypothesis test. (Round to three decimal places as needed.) State the conclusion for this hypothesis test. O A. Do not reject H,. There is sufficient evidence at the a = 0.10 level of significance to conclude that the difference is greater than 0. O B. Reject Ho. There is sufficient evidence at the a = 0.10 level of significance to conclude that the difference is greater than 0 OC. Reject Hn. There is not sufficient evidence at the a = 0.10 level of significance to conclude that the difference is greater than 0. O D. Do not reject Ho. There is not sufficient evidence at the a = 0.10 level of significance to conclude that the difference is greater than 0. (c) What do you think the results of this experiment imply about babies' ability to assess surprising behavior? O A. There is sufficient evidence that babies have the ability to assess surprising behavior. O B. The experiment does not imply anything about babies' ability to assess surprising behavior. OC. There is not sufficient evidence that babies have the ability to assess surprising behavior. O D. There is not sufficient evidence that babies do not have the ability to assess surprising behavior. O E. There is sufficient evidence that babies do not have the ability to assess surprising behavior.
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