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a popular weekly magazine asserts that fewer than 40% of households in the united states have...

a popular weekly magazine asserts that fewer than 40% of households in the united states have changed their lifestyles because of escalating gas prices. a recent survey of 180 households finds that 67 households have made lifestyle changes due to escalating gas prices.

the standard error of p(bar) is:

the value of the test statistic is:

the pvalue is:

at a=0.10 and using the p-value

in light of your conclusion, what test error may happen?

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