Question

In: Statistics and Probability

A​ country's tax collection agency reported that 92​% of individual tax returns were filed electronically in...

A​ country's tax collection agency reported that 92​% of individual tax returns were filed electronically in 2017. A random sample of 225 tax returns from 2018 was selected. From this​ sample, 186 were filed electronically. Complete parts a through c.

A). Construct a 99​% confidence interval to estimate the actual proportion of taxpayers who filed electronically in 2018.

The confidence interval has a lower limit of ____ and an upper limit of _____

​(Round to three decimal places as​ needed.)

B). What is the margin of error? (round three decimal places)

C). is there any evidence that this proportion has changed since 2017 based on this sample?

The sample ____ evidence that this proportion has changed since 2017, since the ______

(First blank is does provide or does not provide)

Solutions

Expert Solution

a)

b)

c)

since confidence interval does not contains 0.92 so on the basis of sample evidence we conclude that proportion has changed from 2017

orchestra answered 2 years ago
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