3. Exam grades across all students across all sections of an introductory statistics class are approximately...
3. Exam grades across all students across all sections of an introductory statistics class are approximately normally distributed with a mean of 72 and a standard deviation of 11. Use the normal distribution to find answer the following questions.
a. What percent of students scored above a 90%?
b. What percent scored below 60%?
c. If the lowest 5% of students will be required to attend an extra study session, what grade is the cutoff for being required to attend the sessions?
d. What is the probability of a randomly selected student having a grade between 70% and 80%?
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3. Exam grades across all students across all sections of an
introductory statistics class are approximately...
A set of final examinations grades in an introductory statistics course is normally distributed, with a...
A set of final examinations grades in an introductory statistics course is normally distributed, with a mean of 75 and a standard deviation of 7. Complete parts (a) through (d). a.) What is the probability that a student scored below 87 on this exam? b.) What is the probability that a student scored between 68 and 90? c.) The probability is 25% that a student taking the test scores higher than what grade? d.) If the professor grades on a...
A set of final examination grades in an introductory statistics course is normally distributed, with a...
A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 73 and a standard deviation of 7. Complete parts (a) through (d). a. What is the probability that a student scored below 86 on this exam? (Round to four decimal places as needed.) b. What is the probability that a student scored between 66 and 93? (Round to four decimal places as needed.) c. The probability is 55% that a student taking...
A set of final examination grades in an introductory statistics course is normally distributed, with a...
A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 75 and a standard deviation of 8. Complete parts (a) through (d). a. What is the probability that a student scored below 88 on this exam? The probability that a student scored below 88 is 0.94790.9479. (Round to four decimal places as needed.) b. What is the probability that a student scored between 67 and 94? The probability that a student scored...
examination grades in an introductory statistics course is normally distributed, with a mean of 75 and...
examination grades in an introductory statistics course is normally distributed, with a mean of 75 and a standard deviation of 7. Complete parts (a) through (d) a. What is the probablity that a student scored below 87 on this exam? The probability that a shudent scored below 87 is (Round to four decimal places as needed.) b What is the probability that a student scored between 68 and 94 The probability that a student soored between 68 and 94 is...
The distribution of grades in an introductory finance class is normally distributed, with an expected grade...
The distribution of grades in an introductory finance class is normally distributed, with an expected grade of 65. If the standard deviation of grades is 9, in what range would you expect 95.00 percent of the grades to fall? (Round answers to 2 decimal places, e.g. 15.25. Hint: Think in terms of what the expected highest and lowest scores would be for 95.00% of the students taking the exam.) 95.00 percent of the grades should fall between the ranges (lower...
The distribution of grades in an introductory finance class is normally distributed, with an expected grade...
The distribution of grades in an introductory finance class is
normally distributed, with an expected grade of 65. If the standard
deviation of grades is 14, in what range would you expect 90.00
percent of the grades to fall? (Round answers to 2 decimal places,
e.g. 15.25. Hint: Think in terms of what the expected highest and
lowest scores would be for 90.00% of the students taking the
exam.)
90.00 percent of the grades should fall beween the ranges (lower...
A set of final examination grades in an introductory statistics course is normally distributed, with a...
A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 78 and a standard deviation of 8. What is the probability that a student scored between 70 and 99? The probability that a student scored between 70 and 99 is =?
The distribution of grades in an introductory finance class is normally distributed, with an expected grade...
The distribution of grades in an introductory finance class is normally distributed, with an expected grade of 68. If the standard deviation of grades is 15, in what range would you expect 68.26 percent of the grades to fall? (Round answers to 2 decimal places, e.g. 15.25. Hint: Think in terms of what the expected highest and lowest scores would be for 68.26% of the students taking the exam.) 68.26 percent of the grades should fall beween the ranges (lower...
The distribution of grades in an introductory finance class is normally distributed, with an expected grade...
The distribution of grades in an introductory finance class is normally distributed, with an expected grade of 70. If the standard deviation of grades is 10, in what range would you expect 99.00 percent of the grades to fall? (Round answers to 2 decimal places, e.g. 15.25. Hint: Think in terms of what the expected highest and lowest scores would be for 99.00% of the students taking the exam.) Excel Template (Note: This template includes the problem statement as it...
The distribution of grades in an introductory finance class is normally distributed, with an expected grade...
The distribution of grades in an introductory finance class is normally distributed, with an expected grade of 65. If the standard deviation of grades is 5, in what range would you expect 68.26 percent of the grades to fall? (Round answers to 2 decimal places, e.g. 15.25. Hint: Think in terms of what the expected highest and lowest scores would be for 68.26% of the students taking the exam.) Excel Template (Note: This template includes the problem statement as it...
examination grades in an introductory statistics course is normally distributed, with a mean of 75 and a standard deviation of 7. Complete parts (a) through (d) a. What is the probablity that a student scored below 87 on this exam? The probability that a shudent scored below 87 is (Round to four decimal places as needed.) b What is the probability that a student scored between 68 and 94 The probability that a student soored between 68 and 94 is...
The distribution of grades in an introductory finance class is
normally distributed, with an expected grade of 65. If the standard
deviation of grades is 14, in what range would you expect 90.00
percent of the grades to fall? (Round answers to 2 decimal places,
e.g. 15.25. Hint: Think in terms of what the expected highest and
lowest scores would be for 90.00% of the students taking the
exam.)
90.00 percent of the grades should fall beween the ranges (lower...
The distribution of grades in an introductory finance class is normally distributed, with an expected grade of 70. If the standard deviation of grades is 10, in what range would you expect 99.00 percent of the grades to fall? (Round answers to 2 decimal places, e.g. 15.25. Hint: Think in terms of what the expected highest and lowest scores would be for 99.00% of the students taking the exam.) Excel Template (Note: This template includes the problem statement as it...
The distribution of grades in an introductory finance class is normally distributed, with an expected grade of 65. If the standard deviation of grades is 5, in what range would you expect 68.26 percent of the grades to fall? (Round answers to 2 decimal places, e.g. 15.25. Hint: Think in terms of what the expected highest and lowest scores would be for 68.26% of the students taking the exam.) Excel Template (Note: This template includes the problem statement as it...
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