A medical doctor claims that 40% of the patients utilize health insurance, but a social worker thinks that this proportion may be is too high. In a sample of 100 medical bills, 25 were partially covered by health insurance, what can we conclude at 0.02 level of significance.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
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Use test concerning Proportions:

  1. A medical doctor claims that 40% of the patients utilize health insurance, but a social worker thinks that this proportion may be is too high. In a sample of 100 medical bills, 25 were partially covered by health insurance, what can we conclude at 0.02 level of significance.
  2. A registrar claims that 45% of their students change their major after their 2nd yr due to retention policy. A random sample of 125 revealed that 50 students had changed their major after their 2nd Is there a decrease in the proportion of students who changed their major after their 2nd yr, test at 0.02 level of significance.
  3. A barangay captain claims that at least 85% of the residents in his barangay have household pets. To test this claim a researcher randomly selected a sample of 550 residents and find that 495 of them do have pets. What can you conclude at 0.10 level of significance.
  4. Test at 0.01 whether the performance in the training program and success in the job are independent

Success in job

Performance

 

Below ave

Ave

Above ave

Poor

23

50

29

Ave

28

79

50

Very good

19

49

63

1. A medical doctor claims that 40% of the patients utilize health insurance, but a sodial worker thinks that this proportion may
be is too high. In a sample of 100 medical bills, 25 were partially covered by health insurance, what can we conclude at 0.02
level of significance.
2. A registrar claims that 45% of their students change their major after their 2nd yr due to retention policy. A random sample of
125 revealed that 50 students had changed their major after their 2nd yr. Is there a decrease in the proportion of students
who changed their major after their 2d yr, test at 0.02 level of significance.
3. A barangay captain claims that at least 85% of the residents in his barangay have household pets. To test this claim a
researcher randomly selected a sample of 550 residents and find that 495 of them do have pets. What can you conclude at
0.10 level of significance.
4 Test at 0.01 whether the performance in the training program and success in the job are independent
Performance
Below ave
23
Ave
Above ave
Success in job
Poor
50
29
Ave
28
79
50
Very good
19
49
63
Transcribed Image Text:1. A medical doctor claims that 40% of the patients utilize health insurance, but a sodial worker thinks that this proportion may be is too high. In a sample of 100 medical bills, 25 were partially covered by health insurance, what can we conclude at 0.02 level of significance. 2. A registrar claims that 45% of their students change their major after their 2nd yr due to retention policy. A random sample of 125 revealed that 50 students had changed their major after their 2nd yr. Is there a decrease in the proportion of students who changed their major after their 2d yr, test at 0.02 level of significance. 3. A barangay captain claims that at least 85% of the residents in his barangay have household pets. To test this claim a researcher randomly selected a sample of 550 residents and find that 495 of them do have pets. What can you conclude at 0.10 level of significance. 4 Test at 0.01 whether the performance in the training program and success in the job are independent Performance Below ave 23 Ave Above ave Success in job Poor 50 29 Ave 28 79 50 Very good 19 49 63
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