Find a confidence interval for difference in the proportion

Assignment Help Basic Statistics

Reference no: EM131384504

Two machines used in the same operation are to be compared. A random sample of 80 parts from the first machine yields 6 nonconforming ones. A random sample of 120 parts from the second machine shows 14 nonconforming ones.

(a) Can we conclude that there is a difference in the output of the machines? Use a level of significance of 0.10.

(b) Find a 95% confidence interval for difference in the proportion of nonconforming parts between the two machines.

Reference no: EM131384504

Questions Cloud

Find a confidence interval for proportion that uses airline : Find a point estimate of the proportion of the market that uses this particular airline.- Find a 95% confidence interval for the proportion that uses this airline.

Estimate the output noise voltage spectral density : The variation in the output signal of a DUT is 1 mV RMS. Assume that the DUT's output follows a first-order frequency response and has a 3-dB bandwidth of 100 Hz. Estimate the output noise voltage spectral density

Find confidence interval for the difference in proportion : Find a 90% confidence interval for the difference in the proportion of people who prefer the stipulated product before and after the advertising campaign.

By what factor does the settling time increase : By what factor should the bandwidth of an RC low-pass filter be decreased in order to reduce the variation in a DC measurement from 250 μV RMS to 100 μV RMS. By what factor does the settling time increase.

Find a confidence interval for difference in the proportion : Can we conclude that there is a difference in the output of the machines? Use a level of significance of 0.10.- Find a 95% confidence interval for difference in the proportion of nonconforming parts between the two machines.

Describe the role and value of ethics in policing : Describe the role and value of ethics in policing.Identify the punishment or consequences of the unethical police practices.What key points did you take from the Police Ethics Discussion with your collaborative group this week?What methods or trainin..

Write the calibration equation for this meter : A meter reads 0.5 mV and 1.1 V when connected to two precision reference levels of 0 and 1 V, respectively. What are the offset and gain of this meter? Write the calibration equation for this meter.

Find confidence interval for standard deviation of diameters : Find a 90% confidence interval for the variance of the diameters.- Find a 90% confidence interval for the standard deviation of the diameters.

Find a confidence interval for the ratio of the variance : Find a 90% confidence interval for the ratio of the variances of the delay times for the two vendors. (b) What assumptions are needed to solve part (a)?

User Account

All Pages