Time to finish a final exam is normally distributed with mean 0.8 hours and standard deviation...
Time to finish a final exam is normally distributed with mean 0.8 hours and standard deviation 7 minutes. What is the first quartile of the time distribution?
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Time to finish a final exam is normally distributed with mean
0.8 hours and standard deviation...
The amount of time students study for a final exam is normally distributed with a mean...
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
The time needed to complete a final examination in a particular college course is normally distributed...
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. If students have only 100 minutes to complete the exam, what percentage of the class will not finish the exam in time?
The length of time taken by students on a statistics exam is normally distributed with a...
The length of time taken by students on a statistics exam is normally distributed with a mean of 45 minutes and a standard deviation of 3 minutes. What proportion of students will finish the exam in 50 minutes or less?
Math 132 final exam grade is normally distributed with mean 68 and standard deviation 23
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%
The scores of students on an exam are normally distributed with a mean of 225 and...
The scores of students on an exam are normally distributed with a mean of 225 and a standard deviation of 38. (a) What is the lower quartile score for this exam? (Recall that the first quartile is the value in a data set with 25% of the observations being lower.)
1. The time needed to complete a final examination in a particular college course is normally distributed with a mean o...
1. The time needed to complete a final examination in a particular college course is normally distributed with a mean of 83 minutes and a standard deviation of 13 minutes. Answer the following questions. a. What is the probability of completing the exam in one hour or less (to 4 decimals)? b. What is the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes (to 4 decimals)? 2. According to the...
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. Answer the following questions. (a) What is the probability of completing the exam in one hour or less? (b) What is the probability that a student will complete the exam in more than 60 minutes but less than 65 minutes? (c) Assume that the class has 50 students and that the examination period is...
The finish times for a 10 km race were normally distributed with a mean time of...
The finish times for a 10 km race were normally distributed with a mean time of 44.5 minutes with a standard deviation of 3.83 minutes. What time separates the fastest 15% of runners who completed the race?
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 77 minutes and a standard deviation of 12 minutes.
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 77 minutes and a standard deviation of 12 minutes. Answer the following questions. a. What is the probability of completing the exam in one hour or less (to 4 decimals)? b. What is the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes (to 4 decimals)? c. Assume that the class has 60 students...
a. Time to finish a quiz in minutes follows a normal distribution with mean 6 and...
a. Time to finish a quiz in minutes follows a normal distribution with mean 6 and standard deviation .7. A student took 4.8 minutes. What is this student’s z-score? b. Time to finish a quiz in minutes follows a normal distribution with mean 6 and standard deviation .7. What proportion of students complete the quiz in less than 5.2 minutes? Use the normalcdf command on your calculator with 6 as the mean, .7 as the standard deviation, a very large negative...
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