The length of time it takes to complete a word puzzle is found to be normally...
The length of time it takes to complete a word puzzle is found to be normally distributed with a mean of 70 seconds and a standard deviation of 10 seconds. Using the 50% dash –34% dash –14% figures, find the longest time to complete the word puzzle that a person can have while being in the bottom most percentages of scores for each of the following percentages. (a) 84% (b) 16% (c) 2% (d) 98% (e) 50%
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The length of time it takes to complete a word puzzle is found to be normally...
The length of time it takes to complete a word puzzle is found to be normally...
The length of time it takes to complete a word puzzle is found to be normally distributed with a mean of 76 seconds and a standard deviation of 8 seconds. Using the 50% dash –34% dash –14% figures, find the approximate percentages of scores (on time to complete the word puzzle) that will be above or below the following values. (a) Above 76 (b) Below 76 (c) Above 60 (d) Below 60 (e) Above 84 (f) Below 84 (g) Above...
8. (8 pts) The length of time for students to complete a test is found to...
8. (8 pts) The length of time for students to complete a test is found to be normally distributed with mean 70 minutes and standard deviation 12 minutes. How long should the time for the test be if we wish for 90 percent of the students to complete the test in less time than the test length? (Use the Normal table provided for your calculations)
3. The amount of time it takes to complete a task is normally distributed with a...
3. The amount of time it takes to complete a task is normally distributed with a mean of 34 minutes and a standard deviation of 4 minutes. If I take a sample of 24 people how many of those 24 people on average will take over 37 minutes to do the task?
Suppose the people living in a city have a mean score of 55 and a standard...
Suppose the people living in a city have a mean score of 55 and a standard deviation of 4 on a measure of concern about the environment. Assume that these concern scores are normally distributed. Using the 50%minus34%minus14% figures, what is the minimum score a person has to have to be in the top (a) 2%, (b) 16%, (c) 50%, (d) 84%, and (e) 98%?
Suppose the people living in a city have a mean score of 44 and a standard...
Suppose the people living in a city have a mean score of 44 and a standard deviation of 9 on a measure of concern about the environment. Assume that these concern scores are normally distributed. Using the 50%minus−34%minus−14% figures, what is the minimum score a person has to have to be in the top (a) 2%, (b) 16%, (c) 50%, (d) 84%, and (e) 98%?
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 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
Use the web calculator (assume scores normally distributed) to determine what percent of a group with...
Use the web calculator (assume scores normally distributed) to determine what percent of a group with a 50 yard dash mean = 8.0 seconds and Sx = .75 seconds scored better than a dash time of 7.7. URL to web calculator: http://davidmlane.com/hyperstat/z_table.html A.) 66% B.) 40% C.)correct answer not given D.) 34%
The time it takes students to complete an ESI-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 length of time a person takes to decide which shoes to purchase is normally distributed...
The length of time a person takes to decide which shoes to purchase is normally distributed with a mean of 8.21 minutes and a standard deviation of 1.90. Find the probability that a randomly selected individual will take less than 5 minutes to select a shoe purchase. Is this outcome unusual? Probability is 0.045, which is unusual as it is less than 5% Probability is 0.954, which is usual as it is greater than 5% Probability is 0.045, which is...
3. The mean length of time it takes for a broken arm to heal is normally...
3. The mean length of time it takes for a broken arm to heal is normally distributed with a mean of 44 days and a standard deviation of 7 days. a) Find the probability one person with a broken arm will heal in over 38 days? b) Find the probability from a sample of 45 people with broken arms that the average time for the sample of 45 to heal is over 38 days? c) Why is your answer for...
8. (8 pts) The length of time for students to complete a test is found to be normally distributed with mean 70 minutes and standard deviation 12 minutes. How long should the time for the test be if we wish for 90 percent of the students to complete the test in less time than the test length? (Use the Normal table provided for your calculations)
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
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...
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