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Q1) Susan Williams has been production manager of Medical suppliers, Inc , for past 17 years. Medical suppliers, Inc., is a producer of bandages and arm slings. In the past five years, demand for No- stick bandages has been moderately constant. On average, sales have been about 87,000 packages of No stick. Susan has reason to think that distribution of No- Stick follows normal curve, with standard deviation of 4000 packages. Determine the probability that sales will be less than 81,000 packages?
Q2) Industrial oven utilize to cure sand cores for factory manufacturing engine blocks for small cars is able to maintain fairly constant temperature. Temperature range of oven follows a normal distribution with mean of 450 F and standard deviation of 25F. Leslie Larsen, president of factory, is concerned about large number of defective cores that have been produced in several months. If oven gets hotter than 475F, core is defective. Determine the probability that oven will cause core to be defective? Find out the probability that temperature of oven will range from 460 to 470 F?
A sample of twenty automobiles was taken, and the miles per gallon (MPG), horsepower, and total weight were recorded. Develop a linear regression model to predict MPG using horsepower as the only independent variable. Develop another model with weig..
On a particular day during the most recent golf tournament, the organizer placed the whole (pin) in 0 back left corner of the green. 64 golfers played the hole with the new placement on that day. Find out the probability of the sample average numb..
A small town has a population of 20,000 people. Among these 1,000 regularly visit a popular local bar. A sample of 100 people who visit the bar is surveyed for their annual expenditures in the bar.
Hours worked is important predictor of amount of sales.
At the 0.05 level of significance, is there sufficient reason to believe that the integers are not being generated uniformly?
When the level of confidence and sample standard deviation remain the same, a confidence interval for a population mean based on a sample of n = 100
Use the relative frequency approach to construct a probability distribution for the number of tests taken.
When the p-value is used for hypothesis testing, the null hypothesis is rejected if
Elucidate the null and alternative hypothesis for the difference among the two means. In testing the difference between the means of two.
Determine the 90% confidence interval for average days worked by employees in all payroll departments?
Which of the following is NOT true regarding the normal probability distribution.
Calculate the probability that the median of the sample or average medians is:
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