The time to complete a standardized exam is approximately normal with a mean of 70 minutes...
The time to complete a standardized exam is approximately normal with a mean of 70 minutes and a standard deviation of 10 minutes. How much time should be given to complete the exam so that 75% of the students will complete the exam in the time given?
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The time to complete a standardized exam is approximately normal
with a mean of 70 minutes...
Example: The time to complete a standardized exam is approximately normal with a mean of 70...
Example: The time to complete a standardized exam is approximately normal with a mean of 70 minutes and a standard deviation of 10 minutes. Using the 68-95-99.7 rule, a) what percentage of students will complete the exam in under an hour? b) what percentage of students will complete the exam between 60 minutes and 70 minutes? 17 of 27 c) in what time interval would you expect the central 95% of students to be found?
The time to complete an exam is approximately Normal with a mean of 49 minutes and...
The time to complete an exam is approximately Normal with a mean of 49 minutes and a standard deviation of 5 minutes. The bell curve below represents the distribution for testing times. The scale on the horizontal axis is equal to the standard deviation. Fill in the indicated boxes. H = 49 O = 5 H-30 H-20H. +O +20 + 30 Question Help: Written Evam
The time to complete an exam is approximately Normal with a mean of 54 minutes and...
The time to complete an exam is approximately Normal with a mean of 54 minutes and a standard deviation of 2 minutes. The bell curve below represents the distribution for testing times. The scale on the horizontal axis is equal to the standard deviation. Fill in the indicated boxes. H = 54 O = 2 H-30 -20 H- O u to +20 u + 30 OOOOOOO Get help: Written Example License Points possible: 3 This is attempt 1 of 3....
Question 3 < > 01 Details The time to complete an exam is approximately Normal with...
Question 3 < > 01 Details The time to complete an exam is approximately Normal with a mean of 41 minutes and a standard deviation of 7 minutes. The bell curve below represents the distribution for testing times. The scale on the horizontal axis is equal to the standard deviation. Fill in the indicated boxes. M = 41 O = 7 1-30 -20 -20 H-O р HO +20 +30
The time required for Dr. B's students to complete the Statistics Exam is approximately normally distributed...
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...
Scores on an exam follow an approximately Normal distribution with a mean of 76.4 and a...
Scores on an exam follow an approximately Normal distribution with a mean of 76.4 and a standard deviation of 6.1 points. What percent of students scored below 70 points?
The average time taken to complete an exam, X, follows a normal probability distribution with mean...
The average time taken to complete an exam, X, follows a normal probability distribution with mean = 60 minutes and standard deviation 30 minutes. What is the probability that a randomly chosen student will take more than 45 minutes to complete the exam?
State administered standardized reading exam is given to eighth grade students. The scores on this exam...
State administered standardized reading exam is given to eighth grade students. The scores on this exam for all students statewide have a normal distribution with a mean of 536 and a standard deviation of 70. A local Junior High principal has decided to give an award to any student who scores in the top 10% of statewide scores. How high should a student score be to win this award? Give your answer to the nearest integer. For help on how...
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...
3. The time needed to complete a final examination is normally distributed with a mean of...
3. The time needed to complete a final examination 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 75 minutes (i.e., between 60 and 75 minutes)? c. What is the longest time in minutes it...
Example: The time to complete a standardized exam is approximately normal with a mean of 70 minutes and a standard deviation of 10 minutes. Using the 68-95-99.7 rule, a) what percentage of students will complete the exam in under an hour? b) what percentage of students will complete the exam between 60 minutes and 70 minutes? 17 of 27 c) in what time interval would you expect the central 95% of students to be found?
The time to complete an exam is approximately Normal with a mean of 49 minutes and a standard deviation of 5 minutes. The bell curve below represents the distribution for testing times. The scale on the horizontal axis is equal to the standard deviation. Fill in the indicated boxes. H = 49 O = 5 H-30 H-20H. +O +20 + 30 Question Help: Written Evam
The time to complete an exam is approximately Normal with a mean of 54 minutes and a standard deviation of 2 minutes. The bell curve below represents the distribution for testing times. The scale on the horizontal axis is equal to the standard deviation. Fill in the indicated boxes. H = 54 O = 2 H-30 -20 H- O u to +20 u + 30 OOOOOOO Get help: Written Example License Points possible: 3 This is attempt 1 of 3....
Question 3 < > 01 Details The time to complete an exam is approximately Normal with a mean of 41 minutes and a standard deviation of 7 minutes. The bell curve below represents the distribution for testing times. The scale on the horizontal axis is equal to the standard deviation. Fill in the indicated boxes. M = 41 O = 7 1-30 -20 -20 H-O р HO +20 +30
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...
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