Both of the graphs represent normal distributions with a mean of -10. Determine

Question

Both of the graphs represent normal distributions with a mean of -10. Determine which of the two normal distributions has a standard deviation of = 2 and which has a standard deviation of -3. Explain how you know which is 10 Choose the correct answer below. A. Graph A has a standard deviation of = 3. Graph B has a standard deviation of -2. Since Graph A is taller, it has a larger standard deviation. Graph A has a standard deviation of = 3. Graph B has a standard deviation of -2. Since Graph B is a wider graph, it has a smaller spread and a smaller standard deviation. Graph A has a standard deviation of = 2. Graph B has a standard deviation of =3. Since Graph B is a wider graph, it has a greater spread and a larger standard deviation. Graph A has a standard deviation of = 2. Graph B has a standard deviation of -3. Since Graph A is taller, it has a larger standard deviation. O B. ° C. D.

Explanation / Answer

Graph A has lower standard deviation than graph B because the tails are closer to the mean in A.

thus answer is C

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