A paint manufacturer uses a machine to fill gallon cans with paint. a)The manufacturers wants to estimate the mean volume of paint the machine is putting in the cans within 0.25 ounces...
A paint manufacturer uses a machine to fill gallon cans with paint. a)The manufacturers wants to estimate the mean volume of paint the machine is putting in the cans within 0.25 ounces...
The weight of a checked suitcase at a particular airport has a mean of 18.5kg and a standard deviation of 3.5kg. 1) Find the standard deviation of the sample mean weight for a sample...
Manbir is a local fisherwoman who has been recording the mean weight of the fish that she catches. She discovered that the distribution of weight is normal with a mean of 2.9kg and a standard deviation...
A student scores 61 on a test. The class average is 81, with a standard deviation of 10 points. What percentage of the class scored below this student? How do I solve this problem?...
Janey always waits until her gas tank is nearly empty before she refuel a. She keeps a record of the distance she drives on each tank of gas. The distance varies, depending on the weather...
1. IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If a certain person has an IQ of 131, what percentage of the population has a lower IQ? 2...
Suppose exam scores form an approximately normal distribution that has μ = 500 points and σ = 100 points. Letter grades on the exam were distributed as follows: Ds made up 16% of the exam, Cs 30%,...
Describe your findings
At the end of a bowling tournament, three friends analyzed their scores. Erinn's mean bowling score is 92 with a standard deviation of 14. Declan's mean bowling score is 130 with a standard...
there are 2,000 freshman who take integrated math 1 at Statesville high school. the scores for the last unit test were distributed normally with a mean of 70 and a standard deviation of 7
please give me the explination
Five percent of people in the U.S that are eligible to donate blood actually do. There are 11,000 eligible people in town, find the mean, variance, and standard deviation for the number of people...
Karen bought a book for $55. If book prices are normally distributed with a mean of $40 and standard deviation of $10, how many books (in terms of percentages of the total) are more expensive than...
please explain this question with the help of bell curve sir/madam
There are 5 participants in a study. All I have are some statistics to find out the individual numbers for the 5 people. The mean is 8, the standard deviation is 4, the mode is 5 and the range is...
Please show the steps so I can understand how to solve the problem
So, this is the question I'm have difficultly working out, I've come close to the answer but my calculations are clearly going wrong, anyway, here's the question and the help would be much appreciated...
z-score =1.3
with a height of 68in , Ronald was the shortest president of a particular club in the past century. The club presidents of the past century have a mean height of 71.4 in and a standard deviation of...
I need to find one, two and three standards deviations above the mean over 14.88 and one,two and three below this mean. The standard deviation in this equation is 2.8