An exam given typically has a mean of 75 and a standard deviation of 5 points. If Tim receives a curved score of 80, about what percent of the class has a worse score than Tim?
An exam given typically has a mean of 75 and a standard deviation of 5 points....
Finn receives a final exam score of 65. The class had a mean of 75 and standard deviation of 10. What percent of students in Finn's class scored lower than him? 84%,50%,34%,16%
Statistics Question... (10 pts) If the mean exam score of a class was 75%, with a standard deviation of 15%, what percent of students would be expected score at or higher than 92%? Assume that the distribution of the scores is normal and the variable is random 7.
Example: In a class of 3 students, the average score on the final exam is 75% and standard deviation of 5%. Amy got 80% on the final exam. How many standard deviations better than the mean is that? Mandy got 70%. How many standard deviations is Mandy's score deviate from the mean? Judy got 75%. How many standard deviation is Judy's score deviate from the mean?
The population mean score for a particular exam is 74 and the standard deviation is 9. What are the mean and standard deviation of the class average score for classes composed of 36 students randomly drawn from the population?
Imagine that the mean (µ) for Dr. Bates’ chemistry exam in Winter 2020 = 75. You obtain a score of x = 80. The standard deviation (s) for the Winter 2020 exam is 2. When Dr. Bates teaches chemistry in Spring 2020, the class average (µ) = 85 on the exam and the standard deviation (s) = 2 (like it did in Winter 2020). In which class, Winter 2020 or Spring 2020, is the mean doing a better job of...
Math 132 final exam grade is normally distributed with mean 68 and standard deviation 23. Final exam score above 92 corresponds to an A. Approximately what percent of the class got an A? 85% 15% 16% 84%
A final exam in Math 160 has a mean of 73 with standard deviation 7.73. Assume that a random sample of 24 students is selected and the test score of the sample is computed. Assuming the scores are normally distributed, what percentage of sample means are less than 69?
Scores on an exam are normally distributed with a mean of 65 and a standard deviation of 9. Find the percent of the scores that satisfies the following: (a) Less than 54 (b) At least 80 (c) Between 70 and 86
A set of data has a mean of 75 and a standard deviation of 5. What percentage of data will fall between 60 and 90? What percentage of data will fall between 65 and 85? What percentage of data will be less than 65?
3. A normal distribution of BMCC MATSI scores has a standard deviation of 1.5. Find the z-scores corresponding to each of the following values: a. A score that is 3 points above the mean. b. A score that is 1.5 points below the mean. c. A score that is 2.25 points above the mean 4. Scores on BMCC fall 2017 MATI50.5 department final exam form a normal distribution with a mean of 70 and a standard deviation of 8. What...