Which of the following examples best illustrates substitute products or services?

You measure the length of copperheads (the only venomous snake found in the DC area) in cm. You want to know if there is a difference in the length of male and female copperheads. You get the following results, but discover that the data above are not normally distributed.  What is the value of your test statistic (you need to calculate the correct test statistic to use for these data)? males:     64     72    73    74    76    76    77    114 females:  31     54    55    56    57    58    65      67

The sample variance is given by which of the following?  

A 95% CI is given as (-6,3). Will a two sided one sample t-test for H0: μ = 0 at α = .01 reject H0?  There are not typos.  

Which of the following is most likely to measure performance that results from a company’s long-term commitments?

0! =

An examination of a company’s financial statements over several years allows the analyst to

Imagine a market in which firms are identical in size, produce the same products, and earn no economic profits.  This is called

A competitive environment where there is weak to moderate rivalry among sellers, high entry barriers, weak competition from substitute products, and little bargaining leverage on the part of both suppliers and customers

The challenge in defining an industry is that