Question

Small Sample Difference of Means. Company officials were concerned about the length of time a particular drug product retained its potency. A random sample of 10 bottles of the product was from the production line and analyzed for potency (labeled FRESH). A second set of 10 bottles was obtained and stored in a regulated environment for 1 year (labeled STORED). The data are given below. You can safely assume the data are distributed normally. FRESH STORED 9.8 10.0 10.2 10.2 10.3 10.5 10.6 10.6 10.7 10.8 9.5 9.6 9.6 9.7 9.8 9.8 9.9 10.1 10.1 10.2 Mean Median Variance Std Dev Min Max Range CV FRESH 10.370 10.400 0.105 0.323 9.800 10.800 1.000 3.118 STORED 9.830 9.800 0.058 0.241 9.500 10.200 0.700 2.448 The researchers want to determine if the mean potency is greater in the Fresh sample compared to the Stored sample. What is the pooled standard error for this problem? I only want the answer - no equations. Use 4 significant decimal places. Please use the proper rules of rounding

Small Sample Difference of Means. Company officials were concerned about the length of time a particular drug product retained its potency. A random sample of 10 bottles of the product was from the production line and analyzed for potency (labeled FRESH). A second set of 10 bottles was obtained and stored in a regulated environment for 1 year (labeled STORED). The data are given below. You can safely assume the data are distributed normally.

FRESH	STORED			FRESH	STORED
9.8	9.5		Mean	10.370	9.830
10.0	9.6		Median	10.400	9.800
10.2	9.6		Variance	0.105	0.058
10.2	9.7		Std Dev	0.323	0.241
10.3	9.8		Min	9.800	9.500
10.5	9.8		Max	10.800	10.200
10.6	9.9		Range	1.000	0.700
10.6	10.1		CV	3.118	2.448
10.7	10.1
10.8	10.2

The researchers want to determine if the mean potency is greater in the Fresh sample compared to the Stored sample. What is the pooled standard error for this problem? I only want the answer - no equations. Use 4 significant decimal places. Please use the proper rules of rounding.

Answer 1

pooled stemdard enor Sp 0 01.215