The pH of an acid solution used to etch aluminum varies somewhat from batch to batch. In a sample of 50 batches the mean pH was 2.6, with a standard deviation of 0.3. Let µ represent the mean pH for batches of this solution.

a. Find the P-value for testing H0: µ ≤ 2.5 versus H1:µ> 2.5.

b. Either the mean pH is greater than 2.5 mm, or the sample is in the most extreme_______ % of its distribution.

STAT 250 Jan 23,25 David Holmes Section 1.1 • Overview What is Statistics Statistics is the Science of Reasoning with Data Collecting, Organizing, Summarizing, and Analyzing observations (called data) to draw conclusions, answer questions, and gain understanding....