Question

In: Statistics and Probability

1.Which is relatively​ better: a score of 72 on a psychology test or a score of...

1.Which is relatively​ better: a score of 72 on a psychology test or a score of 62 on an economics​ test? Scores on the psychology test have a mean of 92 and a standard deviation of 12. Scores on the economics test have a mean of 63 and a standard deviation of 9.

A.The psychology test score is relatively better because its z score is less than the z score for the economics test score.

B.The economic test score is relatively better because its z score is less than the z score for the psychology test score.

C.The psychology test score is relatively better because its z score is greater than the z score for the economics test score.

D.The economics test score is relatively better because its z score is greater than the z score for the psychology test score.

2. Heights of men on a baseball team have a​ bell-shaped distribution with a mean of 170 cm and a standard deviation of 5 cm. Using the empirical​ rule, what is the approximate percentage of the men between the following​ values?

a.---------​% of the men are between 160 cm and 180 cm.

b.----------​%of the men are between 155 cm and 185 cm.

Solutions

Expert Solution

orchestra answered 1 year ago
Next > < Previous

Related Solutions

In a psychology class, 59 students have a mean score of 98 on a test. Then...
In a psychology class, 59 students have a mean score of 98 on a test. Then 16 more students take the test and their mean score is 62.8. What is the mean score of all of these students together? Round to one decimal place. mean of the scores of all the students = 57 randomly selected students were asked how many siblings were in their family. Let X represent the number of pairs of siblings in the student's family. The...
Who did better? Peter with a score of 92 in a test with mean 71 and...
Who did better? Peter with a score of 92 in a test with mean 71 and standard deviation 15, OR Mary with a score 688 in a test with mean 493 and standard deviation 150
given a percentile rank ((PR) of a score. find the value of score: a) P=72 FOR...
given a percentile rank ((PR) of a score. find the value of score: a) P=72 FOR I SCORES B) P=45 FOR I SCORES. C)P=58 FOR I SCORES D)P=91 FOR IQ SCORES E) P=44 FOR IQ SCORES F) P=17 FOR IQ SCORES G) P=33 FOR IQ H) P=75 FOR GRE SCORES I) P=87 FOR STENS SCORES J) P=37 FOR STENS SCORES MEANS( X)AND STANDARD DEVIATION (SD)FOR T -SCALE: (X): (X)= 50; SD=10 IQ- SCALE: (X)= 100; SD= 15 GRE-SCALE: (X)= 500;...
Discuss what areas in psychology would benefit from using a paired-sample t test to better understand...
Discuss what areas in psychology would benefit from using a paired-sample t test to better understand that phenomena. For example, when measuring intelligence, we could develop an intervention to help improve intelligence, and the compare before and after scores for each participant.
1. Raul received a score of 80 on a history test, the z-score is 1.34. He...
1. Raul received a score of 80 on a history test, the z-score is 1.34. He received a score of 85 on a biology test, the z-score is 1.30. On which test did he do better relative to the rest of the class? a. History test b. Biology test c. He scored the class average on both the History and Biology test. 2. Which probability, P(z < -1.18) or P(z > 1.18) is greater? a. P(z < -1.18) b. P(z...
Nurse             Pretest -Score            Post-test Score A              &nbs
Nurse             Pretest -Score            Post-test Score A                                  63                                81 B                                  89                                90 C                                 76                                89 D                                 71                                76        E                                  90                                90        F                                  56                                78        G                                 78                                82 - Conduct a t-test on the data and report your interpretation of the output.
Raul received a score of 79 on a history test for which the class mean was...
Raul received a score of 79 on a history test for which the class mean was 70 with a standard deviation of 5. He received a score of 70 on a biology test for which the class mean was 70 with standard deviation 6. On which test did he do better relative to the rest of the class?
Test Score System As a Systems Analyst, you are appointed to document requirements of a Test Score System.
1. The questions below relate to the following case study: System: Test Score System As a Systems Analyst, you are appointed to document requirements of a Test Score System. You are also required to study agile project management approach and apply it in the project. As part of the business process, the lecturer marks all the student papers, aggregates the scores and captures them. The Head of Department oversees the work of the lecturer. His duties in this regard include...
Brand Price ($) Score Bose 180 72 Scullcandy 150 78 Koss 84 66 Phillips/O'Neill 72 60...
Brand Price ($) Score Bose 180 72 Scullcandy 150 78 Koss 84 66 Phillips/O'Neill 72 60 Denon 84 48 JVC 36 30 a. Does the t test indicate a significant relationship between price and the overall score? The test t-Conclusion at = .05 t =  (to 2 decimal places.) p-value is - Select your answer -less than .01between .01 and .025between .025 and .05between .05 and .1greater than .1Item 2 What is your conclusion? Use = .05. - Select your answer...
Score on the Wechsler Intelligence Scale for Children 1 Parameters for a Test of the Significance...
Score on the Wechsler Intelligence Scale for Children 1 Parameters for a Test of the Significance of Single Sample Mean Using a Z Score Value of Parameter or Statistic 97 Sample Mean: 112 Hypothesized population mean: 100 119 Population Standard Deviation: 15 84 Count (i.e., n): 135 Standard Error of the Mean: 95 Z Score: 127 Alpha: 0.05 103 Probability of Z with a 1-Tailed Test: 95 Critical Value of Z with a 1-Tailed Test: 107 Probability of Z with...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT