49 measurements of a variable have been made, resulting in a mean of 9.491 and a population standard deviation, σ, of 1.212. Indicate whether any of the following values ​​can be rejected using the 2sm criterion: 9.357; 9.399; 9.577; 9.605?(A). Yes, 9.357 and 9.605 can be rejected(B). Yes, 9.357 can be rejected(C). Yes, 9.605 can be rejected(D). No, none should be rejected

What is a standard deviation in analytical chemistry?

3) For the results, discuss the significance of the following in terms of accuracy or precision: a) Deviation vs Absolute Error. b) % Error vs Standard Deviation.

9. The following are three sets of data for the atomic mass on antimony (Sb) from the work of Willard and McAlpine. Set 1 Set 2 Set 3 121.771 121.784 121.752 121.787 121.758 121.784 121.803 121.765 121.765 121.781 121.794 a) Determine the mean and standard deviation of each data set. b) Determine the 95% confidence intervals for each data set. c) Determine whether the 121.803 value in Set 1 is an outlier for that set. d) Pool the data and determine the overall mean and the pooled standard deviation. e) Compare the overall mean of the 11 data points with the currently accepted value. Report the absolute error and the percent relative error, assuming the currently accepted value is the true value.

4. In addition to finding the right answer can you explain what is Determinate error (I think the correct answer is the 3rd option here but not sure if right)

Provide an appropriate response. 12) The IQ scores of adults are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability that a randomly selected adult has an IQ score between 85 and 125.

2.5. The table below shows average temperatures recorded over a five-day period last winter Days Temperature ("C) 1 2 3 4 5 18 22 19 25 12 (a) Calculate the mean values, X, of these temperatures (b) Calculate the standard deviation of the average temperatures

1) Report the results of this calculation along with both the percent relative and absolute uncertainties. 417.3 ± 0.4 × 71.8 ± 0.7(647.21 ± 0.2 − 182.3 ± 0.4) Absolute uncertainty:Percent uncertainty:

1.41 Find ǝ/ǝy of: (a) 5x² + y + sin(axy) + 3; (b) cos (by²³z); (c) xexy; (d) tan (3x + 1); (e) 1/(e¯aly + 1); (f) f(x)g(y)h(z).

An ore sample was analyzed for its Fe content. Student A analyzed the sample a total of six times and her results had a standard deviation of 1.33. The same sample was analyzed five times by Student B and his results had a standard deviation of 3.42. To determine if their standard deviations are similar, they perform an F test. The calculated F value is and the table value of Fis 3 in your book for critical values of F. O 6.61; 7.39 O 6.61; 9.36 O 0.151; 9.36 O 2.57; 7.39 O 6.61; 6.98 Refer to Table 4-