We are interested in knowing if the following frequency distribution is normally distributed. The population mean...

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We are interested in knowing if the following frequency distribution is normally distributed. The population mean and standard deviation of the data are 600 and 160, respectively: Lower Class Limit Upper Class Limit Frequency 200 up to 400 10 400 up to 600 55 600 up to 800 30 800 1000 up to 1000 up to 1200 If the distribution was normally distributed, what is the probability that an observation would be a member of the "400 up to 600" class? We are interested in knowing if the following frequency distribution is normally distributed. The population mean and standard deviation of the data are 600 and 160, respectively: Lower Class Limit Upper Class Limit Frequency 200 up to 400 10 400 up to 600 55 600 up to 800 30 800 1000 up to 1000 up to 1200 If the distribution was normally distributed, what is the probability that an observation would be a member of the "400 up to 600" class?