The time it takes students to complete an ES1-3215 final exam is normally distributed with a...
The time it takes students to complete an ESI-3215 final exam is normally distributed with a mean of 70 min and a standard deviation of 20 min. How much time should be allowed to ensure that 95.0% of the students can complete the exam on time? (Round numerical value to the nearest minute) O 103 min 101 min O 110 min O 106 min Not enough information to answer the question O None of the given numerical values is correct...
The time it takes students to complete an ES1-3215 final exam is normally distributed with a mean of 73 min and a standard deviation of 21 min. How much time should be allowed to ensure that 90.0% of the students can complete the exam on time? (Round numerical value to the nearest minute) 98 min 103 min 100 min None of the given numerical values is correct 109 min Not enough information to answer the question 112 min 96 min
Scores of 281 students on an exam were normally distributed with the mean 79 and the standard deviation of 6. Using the "68-95-99.7" rule, estimate how many students score above 91 O 15 O 14 Not enough information to answer the question None of the given numerical values is correct 10
Question 14 2 pt Scores of 166 students on an exam were normally distributed with the mean 79 and the standard deviation of 6. Using the "68-95-99.7" rule, estimate how many students score above 91 O1 o O 8 O2 O 6 Not enough information to answ nswer the question None of the given numerical values is correct
Scores of 239 students on an exam were normally distributed with the mean 79 and the standard deviation of 6. Using the "68-95-99.7" rule, estimate how many students score above 91 9 Not enough information to answer the question 12 6 2 3 13 None of the given numerical values is correct
The time required for a student to complete a Statistics exam is normally distributed with a mean of 55 minutes and a standard deviation of 12 minutes. What percent of students take between 40 and 50 minutes to complete an exam? At what point in time will 25 percent of the students have completed the exam?
the time (in minutes) that it takes 16 students to complete an exam. Compute the SS, the variance, and the standard deviation g the 16 students constitute a population and assuming the 16 students constitute a sample. (Round your answers for variance and standard deviation to two decimal places 37 31 27 18 45 30 48 38 12 21 43 46 36 23 2346 (a) the 16 students constitute a population 9 standard deviation min (b) the 16 students constitute...
The time required for Dr. B's students to complete the Statistics Exam is approximately normally distributed with a mean of 40.4 minutes and a standard deviation of 2.2 minutes. Let X be the random variable "the time required for Dr. B's students to complete the Statistics Exam." 6. With the above setting what time marks the 90th percentile? A. 37.562 minutes B. 37.584 minutes C. 43.238 minutes D. 43.216 minutes E. None of the above 7. Which of the following...
The amount of time students study for a final exam is normally distributed with a mean of 25 hours and a standard deviation of 4.0 hours. What is the probability that a student will study for more than 26 hours? a).2500 b).4013 c).5987 d) .6554
On a certain statistics exam, the time for students to submit the exam is normally distributed with a mean of 0.9 hours and a standard deviation of 0.1 hours. What is the probability that a randomly selected student will take longer than an hour and a half to submit the exam? O 0.707 1 0.5 0.0000000001 Page 14 Previous Page Next Page