These data can be approximated quite well by a n(3.4, 3.1) model. economists become alarmed when productivity decreases. according to the normal model what is the probability that the percent change in worker output per hour from the previous quarter is more than 0.8 standard deviations below the mean?

Find the maximum value of p= 4x + 5y subject to the following constraints :

Identify the statement below as either descriptive or inferential statistics. upper a certain website sold an average of 117 books per day last week. is the statement an example of descriptive or inferential statistics? a. it is an example of descriptive statistics because it uses a sample to make a claim about a population. b. it is an example of inferential statistics because it uses a sample to make a claim about a population. c. it is an example of inferential statistics because it summarizes the information in a sample. d. it is an example of descriptive statistics because it summarizes the information in a sample.

Apossible wavelength for the color blue is 0.000000492 meter. which of the following is a reasonable estimate for this wavelength for the color blue? a. 5 × 10-6 m b. 5 × 107 m c. 5 × 10-7 m d. 5 × 106 m