4 Answered Questions for the topic Means And Variances

Means And Variances

05/20/17

I want to determine if there is a significant difference in mean water content between two patches of soil. Which test should I use?
I come across two problems. First, I monitored both patches at 10cm and 30cm over a two month period. Since the two patches are impacted by precipitation over time, I'm assuming that the samples... more
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Expert Answers •1
Means And Variances

06/13/15

Death Statistics Question
A random sample of 100 recorded deaths in the United States during the past year showed an average life span of 71.8 years. Assuming a population standard deviation of 8.9 years, does this seem to... more
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Expert Answers •1
Means And Variances

11/21/13

Find the mean of this set of numbers. 7, –9, 6, –10, –13, –5
77 -4 4 -24
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Means And Variances

10/01/13

Compute the mean and variances of the following discrete probability and distribution.
Compute the mean and variances of the following discrete probability distribution.   X                            ... more
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