Question

A survey conducted by CBS News asked 1,026 respondents: “What would you do with an unexpected tax refund?” The responses are summarized in the following table.
Response Frequency
Pay of debts......... 482
Put it in the bank...... 308
Spend it.......... 112
I never get a refund..... 103
Other............ 21
a. Construct the 90% confidence interval for the population proportion of those who would put the tax refund in the bank.
b. Construct the 90% confidence interval for the population proportion of those who never get a refund.



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  • CreatedJanuary 28, 2015
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