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.

(c) Give the 95% Confidence Interval

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

Expert Solution

orchestra answered 2 years ago

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

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