When testing gas pumps foraccuracy, fuel-quality enforcement specialists tested pumps and found that 1297

1297 of them were not pumping accurately(within 3.3 oz when 5 gal ispumped), and 5666

5666 pumps were accurate. Use a 0.01 significance level to test the claim of an industry representative that less than20% of the pumps are inaccurate. Use theP-value method and use the normal distribution as an approximation to the binomial distribution.

The test statistic is z=

(Round to four decimal places asneeded.)

TheP-value is

nothing

.

(Round to four decimal places asneeded.)

Because theP-value is

greater than or less than

the significancelevel, reject fail to reject the null hypothesis. There is sufficient or insufficient

evidence support the claim that less than20% of the pumps are inaccurate.

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