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17.95% of students in a class of 100...
99.7% of students in a class of 100 weigh between 60 kg and 96 kg. Assuming...
99.7% of students in a class of 100 weigh between 60 kg and 96 kg. Assuming the data is normally distributed, what are the mean and the standard deviation? A. µ = 78kg; σ = 18kg B. µ = 78kg; σ = 9kg C. µ = 78kg; σ = 18kg D. µ = 78kg; σ = 6kg
4. 68% of students at school weigh between 52kg and 80kg. Assuming this data is normally...
4. 68% of students at school weigh between 52kg and 80kg. Assuming this data is normally distributed, what are the mean (1 point) and standard deviation (1 point)
can you please include the formulas I would have to enter in to Microsoft excel to...
can you please include the formulas I would have to
enter in to Microsoft excel to solve, thank you.
Applications 17. The mean cost of domestic airfares in the United States rose to an all-time high of $385 per ticket (Bureau of Transportation Statistics website, November 2, 2012). Airfares were based on the total ticket value, which consisted of the price charged by the airlines plus any additional taxes and fees. Assume domestic airfares are normally distributed with a standard...
1. IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. a. What ...
all questions. Do not round
answers
1. IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. a. What percentage of scores is between 55 and i 15? b. In a group of 20,000 randomly selected individuals, how many have an IQ score of 130 or more? 2. A Honda Civic has its gas mileage (in miles per gallon, or mpg) normally distributed, with a mean of 33 mpg and a standard deviation of...
Answer both questions and show formulas 3 A class of four students received scores: 72, 83,...
Answer both questions and show formulas
3 A class of four students received scores: 72, 83, 91, 100. Find the standard z scores. Alice got the 90 in her class: 61, 82, 85, 89, 90. Fiona got the 80 in her class: 61, 65, 62, 71, 80. Who had the higher standard score? 4)
Please help with steps on how to solve this The mean of the data for the...
Please help with steps on how to solve this The mean of the data for the resting heart rate of adults is 72 beats per minute, and the standard deviation is 5 beats per minute. The results of the data were normally distributed. About what percentage of the population has a resting heart rate between 57 and 72? The mean of normally distributed test scores is 81 and the standard deviation is 5. If there are 246 test scores in...
From a random sample of 17 students in an introductory finance class that uses group-learning techniques,...
From a random sample of 17 students in an introductory finance class that uses group-learning techniques, the examination scores were found to be normally distributed with mean 20 and sample standard deviation 3. For an independent random sample of 11 students in another introductory finance class that does not use group-learning techniques, the examination scores were found to be normally distributed with mean 38 and standard deviation 2, respectively. Estimate with 90% confidence the difference between the two population mean...
1. (1 point) The ages of students in an evening class is normally distributed with mean...
1. (1 point) The ages of students in an evening class is normally distributed with mean 24 and standard deviation of 7, What fraction of students ages will be within 25 and 30? 256x 30
3. Exam grades across all students across all sections of an introductory statistics class are approximately...
3. Exam grades across all students across all sections of an introductory statistics class are approximately normally distributed with a mean of 72 and a standard deviation of 11. Use the normal distribution to find answer the following questions. a. What percent of students scored above a 90%? b. What percent scored below 60%? c. If the lowest 5% of students will be required to attend an extra study session, what grade is the cutoff for being required to attend...
Q5- (5marks) K is normally distributed with a mean of 80 and a 6) The weigh...
Q5- (5marks) K is normally distributed with a mean of 80 and a 6) The weigh of students in AURA standard deviation of 7. If one students is selcted randomly a- What is the probability of student wight is more than 90 b- What is the probabilit of student wight is between 73 and 87
4. 68% of students at school weigh between 52kg and 80kg. Assuming this data is normally distributed, what are the mean (1 point) and standard deviation (1 point)
can you please include the formulas I would have to
enter in to Microsoft excel to solve, thank you.
Applications 17. The mean cost of domestic airfares in the United States rose to an all-time high of $385 per ticket (Bureau of Transportation Statistics website, November 2, 2012). Airfares were based on the total ticket value, which consisted of the price charged by the airlines plus any additional taxes and fees. Assume domestic airfares are normally distributed with a standard...
all questions. Do not round
answers
1. IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. a. What percentage of scores is between 55 and i 15? b. In a group of 20,000 randomly selected individuals, how many have an IQ score of 130 or more? 2. A Honda Civic has its gas mileage (in miles per gallon, or mpg) normally distributed, with a mean of 33 mpg and a standard deviation of...
Answer both questions and show formulas
3 A class of four students received scores: 72, 83, 91, 100. Find the standard z scores. Alice got the 90 in her class: 61, 82, 85, 89, 90. Fiona got the 80 in her class: 61, 65, 62, 71, 80. Who had the higher standard score? 4)
From a random sample of 17 students in an introductory finance class that uses group-learning techniques, the examination scores were found to be normally distributed with mean 20 and sample standard deviation 3. For an independent random sample of 11 students in another introductory finance class that does not use group-learning techniques, the examination scores were found to be normally distributed with mean 38 and standard deviation 2, respectively. Estimate with 90% confidence the difference between the two population mean...
1. (1 point) The ages of students in an evening class is normally distributed with mean 24 and standard deviation of 7, What fraction of students ages will be within 25 and 30? 256x 30
Q5- (5marks) K is normally distributed with a mean of 80 and a 6) The weigh of students in AURA standard deviation of 7. If one students is selcted randomly a- What is the probability of student wight is more than 90 b- What is the probabilit of student wight is between 73 and 87
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