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A cylindrical piece is used in an assembly in which the weight is to be controlled. The tolerances on diameter and height, on the basis of five observations, are 2 ±0.06 cm and 6 ±0.06 cm, respectively.
Assume that the dimensions are independent of each other and are each normally distributed with a capability ratio of 1. What are the natural tolerance limits on the volume of the cylinder?
If specifications on volume are 18.5 ±0.6 cm3, what proportion of the cylinders will be nonconforming, assuming normality?
What is the Cp index? If the target volume is 18.5, what is the Cpm index? Test a hypothesis to determine if Cp is less than 0.6 using α =0.05.
One environmental group did a study of recycling habits in a California community. It found that 73% of the aluminum cans sold in the area were recycled. (Round your answers to four decimal places.)
the effectiveness of a new bug repellent is tested on 14 subjects for a 10 hour period. assume normally distributed
assume the random variable x is normally distributed with mean u87 and a standard deviation o5. find the indicated
Recognizing that the hike to the campsite is a long one, a limit of 35 pounds has been set as the maximum total weight of the items to be carried. Formulate this as a LP problem to maximize the total utility of items carried.
what is differential analysis? what part does it play in making specific business decisions?
The standard hemoglobin reading for normal males of adult age is 15 g/100 ml. The standard deviation is about 2.5 g/100 ml. For a group of 36 male con- struction workers, the sample mean was 16 g/100 ml. Construct a 95% confidence interval fo..
you are planning on junking your old car after it runs an additional 30000 km. the battery on this car has just failed
An airline tracks data on its flight arrivals. Over the past six months, 65 flights on one route arrived early, 273 arrived on time, 218 were late, and 44 were cancelled.
assume the 67 of the cars on a particular freeway are traveling faster than 70 miles per hour. a random sample of 15
If you sample 100 oranges and find that sample mean weight to be 3.7 oz, would you doubt the statement that the orange comes from the population with mean weight of 4.0 oz and standard deviation of 1.0 oz? Justify your answer.
A report states that 40% of home owners had a vegetable garden. How large a sample is needed to estimate the true proportion of home owners who have vegetable gardens to within 4% with 95% confidence?
What type of sampling was this study? What is your analysis of this approach? What are the advantages and disadvantages of this approach.
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