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The company's marketing department has estimated that the monthly demand is normally distributed, with the mean of 805 pairs of jeans and standard deviation of 207 pairs. Find out the probability th
A digital camcorder repair service has set the goal not to exceed the average of 5 working days from the time the unit is brought in to time repairs are completed.
An educator is interested in researching how teaching methodology (Factor A) and previous experience with the type of test (Factor B) may affect scores on particular exam.
Based on your sample variance, develop a 95% confidence interval, which will contain true variance 95% of the time. This is, of course, by definition of confidence interval.
Jay Seago is suing manufacture of his car for $3.5 million because of the defect that he thinks caused him to have an accident.
Serum ferritin is employed in diagnosing iron deficiency. In study conducted recently researchers discovered that in the sample of 28 elderly men the sample standard deviation of serum ferritin was
The data illustrated in the table below resulted from the experiment in which seeds of 5 different kinds were planted and the number of seeds that germinated in 5 weeks after planting was recorded f
An agent for the residential real estate company in large city would like to be capable to predict the monthly rental cost of apartments based upon the size of apartment.
If a random sample of 30 lobster fishermen is chosen, find out the probability that their average catch is less than 31.5 pounds?
A snack food manufacturer chosen a sample of 15 bags of pretzels off the assembly line and weighed their contents. If the sample mean is 10.0 and sample standard deviation is 0.15, find out the 95%
The city of Oakdale wants to see if there is the linear relationship between the temperature and amount of electricity employed (in kilowatts). Based upon the data in table below, is there the signi
Now change the score of X=8 to X=18 and find the new median and standard deviation. Explain how one extreme score influences the mean and standard deviation.
Calculate SS, variance and standard deviation for sample. How well does your estimate compare with actual value of o.
Compute SS, variance and standard deviation for following sample of n=5 scores: 10, 3, 8, 0, 4.
New Age Pharmaceuticals produces drug NasaMist from four chemicals. Today, the company should produce 1000 pounds of drug.
General Ford produces cars in Los Angeles and Detroit and has the warehouse in Atlanta. The company supplies cars to customers in the Houston and Tampa.
There're four inspectors who are scheduled to work 7:00 AM - 3:00 PM shift every day at the nearby airport. Each day there is the 0.15 chance that each inspector will unexpectedly not report f
A study of parallel interchange ramps in the Orlando reveals that many drivers don't employ the overall length of parallel lanes for acceleration, but seek as soon as possible an proper gap in the m
Formulate the linear programming model for this problem (written in the format similar to the way Problems 1 and 2 were presented).
A class has 13 women and 18 men. If student if selected randomly, find out the probability the student is woman?
Formulate integer programming model for this problem (written in format similar to the way Problems 1 and 2 were presented).
Formulate a linear programming model for this problem. Find out the optimal assignment and compute total minimum cost.
We have the Poisson distribution with mean = 4. Find P(X = 3), P(X < 3), P(X <= 3), P(X > 3), variance, and standard deviation.
Three members of club will be chosen to serve as officers. The first person chosen will be president, the second person will be vice-president and third will be secretary or treasurer.
Formulate the linear programming model for this problem. Find out the optimal assignment and calculate total minimum cost.