Question: Lognormal Distribution The random variable x is said to have a lognormal distribution if the values of ln x are normally distributed. Test the following

Lognormal Distribution The random variable x is said to have a lognormal distribution if the values of ln x are normally distributed. Test the following phone call times

(in seconds) for normality, then test for normality of the natural logarithms of the times. What do you conclude?

31.5 75.9 31.8 87.4 54.1 72.2 138.1 47.9 210.6 127.7 160.8 51.9 57.4 130.3 21.3 403.4 75.9 93.7 454.9 55.1

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