Question

The pH of the standard solution were measured with a pH meter three times and the following data were obtained: 6.98, 7.20, and 7.22. If the pH of the standard solution is 7.00, this pH meter would provide the correct results at the 95% confidence level. Is this statement true or false?

Name: the ph of the standard solution were measured with a ph meter three times and the following data were obtained 698 720 and 722 if the ph of the standard solution is 700 this ph meter would p 34825
Uploaded: 2023-06-19T20:44:24-08:00
Duration: 56 s
Channel: Adi S
Description: the ph of the standard solution were measured with a ph meter three times and the following data were obtained 698 720 and 722 if the ph of the standard solution is 700 this ph meter would p 34825

          The pH of the standard solution were measured with a pH meter
three times and the following data were
obtained: 6.98, 7.20, and 7.22. If the pH of
the standard solution is 7.00, this pH meter would provide the
correct results at the 95% confidence level. Is this statement true
or false?

Added by Gary M.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Adi S

06/19/2023

Step 1

Calculate the sample mean (x̄) and sample standard deviation (s) of the pH measurements. x̄ = (6.98 + 7.20 + 7.22) / 3 = 7.1333 s = sqrt[((6.98 - 7.1333)^2 + (7.20 - 7.1333)^2 + (7.22 - 7.1333)^2) / (3 - 1)] = 0.1351 Show more…

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The pH of the standard solution were measured with a pH meter three times and the following data were obtained: 6.98, 7.20, and 7.22. If the pH of the standard solution is 7.00, this pH meter would provide the correct results at the 95% confidence level. Is this statement true or false?