Question

When testing gas pumps for​ accuracy, fuel-quality enforcement specialists tested pumps and found that 1275 of...

When testing gas pumps for​ accuracy, fuel-quality enforcement specialists tested pumps and found that

1275 of them were not pumping accurately​ (within 3.3 oz when 5 gal is​ pumped), and 5682

pumps were accurate. Use a 0.01 significance level to test the claim of an industry representative that less than​ 20% of the pumps are inaccurate. Use the​ P-value method and use the normal distribution as an approximation to the binomial distribution.

A) Identify the null hypothesis and alternative hypothesis.

B) The test statistic is z equals=

C) The​ P-value is

D) because the P value is (Greater than/ less than) the significance level ( reject/ fail to reject)  the null hypothesis. There is ( sufficient/ insufficient)

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