Applied Statistics and Probability for Engineers 6th Edition solutions

Applied Statistics and Probability for Engineers 6
The fraction of defective integrated circuits produced in a photolithography process is being studied. A random sample of 300 circuits is tested, revealing 13 defectives. (a) Calculate a 95% two-sided CI on the fraction of defective circuits produced by this particular tool. (b) Calculate a 95% upp

Applied Statistics and Probability for Engineers 6
An article in Knee Surgery, Sports Traumatology, Arthroscopy [Arthroscopic Meniscal Repair with an Absorbable Screw: Results and Surgical Technique (2005, Vol. 13, pp. 273279)] showed that only 25 out of 37 tears (67.6%) located between 3 and 6 mm from the meniscus rim were healed. (a) Calculate a

Applied Statistics and Probability for Engineers 6
The 2004 presidential election exit polls from the critical state of Ohio provided the following results. The exit polls had 2020 respondents, 768 of whom were college graduates. Of the college graduates, 412 voted for George Bush. (a) Calculate a 95% confidence interval for the proportion of college

Applied Statistics and Probability for Engineers 6
Of 1000 randomly selected cases of lung cancer, 823 resulted in death within 10 years. (a) Calculate a 95% two-sided confidence interval on the death rate from lung cancer. (b) Using the point estimate of p obtained from the preliminary sample, what sample size is needed to be 95% confident that the

Applied Statistics and Probability for Engineers 6
An article in the Journal of the American Statistical Association (1990, Vol. 85, pp. 972985) measured the weight of 30 rats under experiment controls. Suppose that 12 were underweight rats. (a) Calculate a 95% two-sided confidence interval on the true proportion of rats that would show underweight f

Applied Statistics and Probability for Engineers 6
A random sample of 50 suspension helmets used by motorcycle riders and automobile race-car drivers was subjected to an impact test, and some damage was observed on 18 of these helmets. (a) Find a 95% two-sided confidence interval on the true proportion of helmets that would show damage from this te

Applied Statistics and Probability for Engineers 6
The Arizona Department of Transportation wishes to survey state residents to determine what proportion of the population would like to increase statewide highway speed limits from 65 mph to 75 mph. How many residents does the department need to survey if it wants to be at least 99% confident that the

Applied Statistics and Probability for Engineers 6
A study is to be conducted of the percentage of homeowners who own at least two television sets. How large a sample is required if we wish to be 99% confident that the error in estimating this quantity is less than 0.017?

Applied Statistics and Probability for Engineers 6
The U.S. Postal Service (USPS) has used optical character recognition (OCR) since the mid-1960s. In 1983, USPS began deploying the technology to major post offices throughout the country (www.britannica.com). Suppose that in a random sample of 500 handwritten zip code digits, 466 were read correctly.

Applied Statistics and Probability for Engineers 6
Information on a packet of seeds claims that 93% of them will germinate. Of the 200 seeds that I planted, only 180 germinated. (a) Find a 95% confidence interval for the true proportion of seeds that germinate based on this sample. (b) Does this seem to provide evidence that the claim is wrong?

Applied Statistics and Probability for Engineers 6
Use the data from Exercise 8-59 to compute a two-sided Agresti-Coull CI on the proportion of defective circuits. Compare and discuss the CI to the one computed in Exercise 8-59.

Applied Statistics and Probability for Engineers 6
Use the data from Exercise 8-60 to compute a two-sided Agresti-Coull CI on the proportion of tears that will heal. Compare and discuss the CI to the one computed in Exercise 8-60.

Applied Statistics and Probability for Engineers 6
Use the data from Exercise 8-66 to compute a two-sided Agresti-Coull CI on the proportion of correct digits that can be automatically read. Compare and discuss the CI to the one computed in Exercise 8-66.

Applied Statistics and Probability for Engineers 6
Use the data from Exercise 8-68 to compute a two-sided Agresti-Coull CI on the proportion of seeds that germinate. Compare and discuss the CI to the one computed in Exercise 8-68.