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Based on past experience, a professor who teaches large lecture classes believes that 8 % of...
Based on past experience, a bank believes that 8 % of the people who receive loans...
Based on past experience, a bank believes that 8 % of the people who receive loans will not make payments on time. The bank has recently approved 200 loans. What assumptions must be true to be able to approximate the sampling distribution with a normal model? Assumptions: ? What are the mean and standard deviation of this model? mean = ? standard deviation (accurate to 3 decimal places) = ? What is the probability that over 10% of these clients...
A professor believes the class he is teaching in the current semester is below the average...
A professor believes the class he is teaching in the current semester is below the average of the classes he has taught. In order to test this hypothesis, he analyses the scores of tests of all 120 students he teaches this semester. Their average score of this test is 79 out of 100, with a standard deviation of 12. The mean score of the tests for all students that he has taught for the last thirty-two years is 83 out...
Please answer all the parts, thank you. Based on past experience, a bank believes that 12%...
Please answer all the parts, thank you.
Based on past experience, a bank believes that 12% of the people who receive loans will not make payments on time. The bank has recently approved 100 loans. Answer the following questions. a) What are the mean and standard deviation of the proportion of clients in this group who may not make timely payments? - SD (P) = (Round to three decimal places as needed.) b) What assumptions underlie your model? Are the...
A professor has a 95% passing rate for all of his past classes. He surveys his...
A professor has a 95% passing rate for all of his past classes. He surveys his current 93 students, and 13 of them are worried about failing. For his class of 93 students, determine the mean and standard deviation of students passing the class. ive had this question here all day but not help.
A college professor teaches Chemistry 101 each fall to a large class of first-year students. For...
A college professor teaches Chemistry 101 each fall to a large class of first-year students. For tests, she uses the standardized exams that he knows from past experience produce bell-shaped distributions with a mean of 70 and a standard deviation of 12. His philosophy of grading is to impose standards that will yield, in the long run, 14% A’s, 20% B’s, 32% C’s, 20% D’s and 14% F’s. Where should the cutoff be between the A’s and the B’s? Between...
A professor wishes to test a claim that the mean test score of her first class...
A professor wishes to test a claim that the mean test score of her first class is lower than the mean test score of her second class. A random sample of size 16 with a mean of 61.3 and a standard deviation of 8.6 is selected from her first class. A random sample of size 18 with a mean of 74.3 and a standard deviation of 13.4 is selected from her second class. Assume that test scores in both classes...
1 1) Ms Dunne is a campus dean and she believes that morning classes are often...
1 1) Ms Dunne is a campus dean and she believes that morning classes are often a great idea in theory, but that many people do not actually attend those classes. Lisa also believes that participation in other social activities, particularly Greek life (fraternities and sororities) may contribute to these student absences in morning classes, as many of their social activities take place on weeknights and may influence whether a student can get up on time. Lisa polls a sample...
An instructor believes that students do not retain as much information from a lecture on a...
An instructor believes that students do not retain as much information from a lecture on a Friday compared to a Monday. To test this belief, the instructor teaches a small sample of college students some preselected material from a single topic on statistics on a Friday and on a Monday. All students received a test on the material. The differences in exam scores for material taught on Friday minus Monday are listed in the following table. +4.4 +6.2 -1.5 +3.5...
An instructor believes that students do not retain as much information from a lecture on a...
An instructor believes that students do not retain as much information from a lecture on a Friday compared to a Monday. To test this belief, the instructor teaches a small sample of college students some preselected material from a single topic on statistics on a Friday and on a Monday. All students received a test on the material. The differences in exam scores for material taught on Friday minus Monday are listed in the following table. Difference Scores (Friday −...
A STAT 200 professor took a sample of 10 midterm exam scores from a class of...
A STAT 200 professor took a sample of 10 midterm exam scores from a class of 30 students. The 10 scores are shown in the table below: 95,67,76,47,85,70,87,80,67,72 (a) What is the sample mean? (b) What is the sample standard deviation? (Round your answer to two decimal places) (c) If you leveraged technology to get the answers for part (a) and/or part (b), what technology did you use? If an online applet was used, please list the URL, and describe...
Please answer all the parts, thank you.
Based on past experience, a bank believes that 12% of the people who receive loans will not make payments on time. The bank has recently approved 100 loans. Answer the following questions. a) What are the mean and standard deviation of the proportion of clients in this group who may not make timely payments? - SD (P) = (Round to three decimal places as needed.) b) What assumptions underlie your model? Are the...
A professor wishes to test a claim that the mean test score of her first class is lower than the mean test score of her second class. A random sample of size 16 with a mean of 61.3 and a standard deviation of 8.6 is selected from her first class. A random sample of size 18 with a mean of 74.3 and a standard deviation of 13.4 is selected from her second class. Assume that test scores in both classes...
1 1) Ms Dunne is a campus dean and she believes that morning classes are often a great idea in theory, but that many people do not actually attend those classes. Lisa also believes that participation in other social activities, particularly Greek life (fraternities and sororities) may contribute to these student absences in morning classes, as many of their social activities take place on weeknights and may influence whether a student can get up on time. Lisa polls a sample...
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ANNOTATE BRIEFLY LINE BY LINE THE FOLLOWING CODE:
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