An engineer wants to measure the bias in a pH Meter. She uses the meter to...

An engineer wants to measure the bias in a pH Meter. She uses the meter to measure the pH in 12 neutral substances (pH = 7.0) and obtains the data shown below.

7.01, 7.04, 6.97, 7, 6.99, 6.97, 7.04, 7.04, 7.01, 7.00, 6.99, 7.07

Use the Alpha = 0.05 level of significance to test if the pH meter is calibrated correctly.

(a) State the null and alternative hypothesis

(b) State your conclusion for your hypothesis test.

(d) Give a conclusion for the confidence interval test.

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Expert Solution

orchestra answered 1 year ago

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