Chemistry

Please tell me if my answers are right.

Suppose that a series of measurements have shown that the mean mass of an object is 122.4g with a standard deviation of 1.3g. How many significant figures are justified in the mean and how would you report the most probably mass of the object?

a.)Number of significant figures justified in mean value:

b.) Most probable mass of the object:


for a I got 3

for b I got 94.2

  1. 👍 0
  2. 👎 0
  3. 👁 346
asked by Anonymous
  1. a) Correct.

    b) What. How did you even?

    It is 122±2g

    1. 👍 0
    2. 👎 0
    posted by Graham

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry

    No clue where to start with this...if someone can just help me setup these problems or assist in any way that would be great. 1. d=2.507 g/1.22 mL = 2.054918033 g mL^-1 explain how both the rules for significant figures and the

    asked by rich on January 24, 2007
  2. justice

    No clue where to start with this...if someone can just help me setup these problems or assist in any way that would be great. 1. d=2.507 g/1.22 mL = 2.054918033 g mL^-1 explain how both the rules for significant figures and the

    asked by rich on January 24, 2007
  3. Chemistry help

    Hey...I just want to make sure my answers to these questions are correct... 1. d=2.507 g/1.22 mL = 2.054918033 g mL^-1 explain how both the rules for significant figures and the random error calculation (p(d) = +-0.34 g mL^-1)

    asked by Bryant on January 24, 2007
  4. Statistics

    A sample of 12 measurements has a mean of 37 and a standard deviation of 4.25. Suppose that the sample is enlarged to 14 measurements, by including two additional measurements having a common value of 37 each. A. Find the mean of

    asked by Anonymous on September 4, 2014
  5. Math

    In the list of five measurements shown below, one is blurred. What must this value be, if the mean of the five measurements is 7? 8 5 10 3 #

    asked by Jordan on July 28, 2012
  6. Five Number Summary

    In the list of five measurements shown below, one is blurred. What must this value be, if the mean of the five measurements is 6? 8 5 10 3 #.

    asked by Renee on November 6, 2010
  7. Statistics

    The following is a list of 13 measurements: -38,-89,-47,-43,-70,59,92,97,23,-11,-62,-22,-5. Suppose that these measurements are respectively labeled X1,X2,...,X13 Find the sum when i=1 Xi/30.

    asked by Kenny on March 23, 2014
  8. statistics

    A sample of 12 measurements has a mean of 20 and a standard deviation of 2. Suppose that the sample is enlarged to 14 measurements, by including two additional measurements having a common value of 20 each. Find the standard

    asked by Bob on October 11, 2011
  9. Statistics

    A sample of 12 measurements has a mean of 24 and a standard deviation of 4.5. Suppose that the sample is enlarged to 14 measurements, by including two additional measurements having a common value of 24 each. Find the standard

    asked by Nao on January 24, 2009
  10. statistics...Please help

    A sample of 12 measurements has a mean of 24 and a standard deviation of 4.5. Suppose that the sample is enlarged to 14 measurements, by including two additional measurements having a common value of 24 each. Find the standard

    asked by JT on January 24, 2009

More Similar Questions