Find a confidence interval for proportion that uses airline

Reference no: EM131384508

Price deregulation in the airline industry has promoted competition and a variety of fare structures. Prior to deciding on a price change, a particular airline is interested in obtaining an estimate of the proportion of the market that it presently captures for a certain region. A random sample of 300 passengers indicates that 80 used that airline.

(a) Find a point estimate of the proportion of the market that uses this particular airline.

(b) Find a 95% confidence interval for the proportion that uses this airline.

Reference no: EM131384508

Questions Cloud

What assumptions are necessary to perform given test : Can you conclude that the variances of the breaking strengths of natural and synthetic fibers are different? Use a level of significance α of 0.05. What assumptions are necessary to perform this test?

Compute the range and variance : Find the mean, median, and mode of the processing times. Interpret the differences between them.- Compute the range, variance, and standard deviation of the processing times and interpret them.

What is the gain and offset of this filter-buffer stage : Several DC measurements are made on a signal path that contains a filter and a buffer amplifier. At input levels of 1 and 3 V, the output was found to be 1.02 and 3.33 V, respectively. Assuming linear behavior, what is the gain and offset of this ..

Discuss about the post given below : Facts: the most relevant legal facts, often called the key facts, are those facts that pose a question about their legal significance because they seem to establish the elements of an applicable rule of law.Procedural history: the procedural histo..

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.

User Account

All Pages