The irs reported that 62 of individual tax returns were

Reference no: EM13615258

The IRS reported that 62% of individual tax returns were filed electronically in 2008. A random sample of 225 tax returns from 2010 was selected. From this sample, 163 were filed electronically.

a) Construct a 95% confidence interval to estimate the actual proportion of taxpayers who filed electronically in 2010.

b) What is the margin of error for this sample?

c) Is there any evidence that this proportion has changed since 2008 based on this sample?

d) Verify your results with PHStat2.

Reference no: EM13615258

Questions Cloud

There is an oscillating simple pendulum slowing down : there is an oscillating simple pendulum slowing down. assuming time starts when the pendulum is released find an

Determine the sample size needed to construct a 95 : determine the sample size needed to construct a 95 confidence interval to estimate the population mean for the

Determine the sample size needed to construct a 90 : determine the sample size needed to construct a 90 confidence interval to estimate the population mean when ? 75 and

A 200kg block hangs from a spring a 300g body hung below : a 2.00kg block hangs from a spring. a 300g body hung below the block stretches the spring 2.00cm farther. a what is the

The irs reported that 62 of individual tax returns were : the irs reported that 62 of individual tax returns were filed electronically in 2008. a random sample of 225 tax

Calculate the magnitudes of a the force of friction on the : a bicyclist travels in a circle of radius 20.8 m at a constant speed of 9.01 ms. the bicycle-rider mass is 70 kg.

Before prorating the manufacturingoverhead costs at the end : before prorating the manufacturingoverhead costs at the end of 2008 the cost of goods sold andfinished goods inventory

Construct a 95 confidence interval to estimate the : construct a 95 confidence interval to estimate the population proportion with a sample proportion equal to 0.60 and a

Construct a 90 confidence interval to estimate the average : a random sample of 21 ncaa division i mens basketball games during the 2009-2010 season had an average attendance of

User Account

All Pages