stats

Express the following quantities to the correct number of significant figures:

(a) 23.043 ± 4.321
(b) 67 ± 9.023
(c) 33.1492934 ± 2

Isn't (a) already the correct number of significant digits?
Would (b) be 67.000 ± 9.023?
Would (c) be 33.1492934 ± 2.0000000

or would
(a) 23.04 ± 4.321
(b) 67 ± 9.0
(c) 30 ± 2

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asked by Sam
  1. b) you cant add precision to 67

    67+-9
    c) it is correct as written.

  2. which of the a answers are right?
    and which of c?

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    posted by Sam

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