This Question: 1 pt The EEB Click the icon to view the data table Use the range

Question

This Question: 1 pt The EEB Click the icon to view the data table Use the range rule of thumb to identify a range of values containing the usual numbers of girls in 10 births The nainum usual value is (Round to one decimal place as needed) The minimum usual value is(Round to one decimal place as needed) Based on the result, is 1 girl in 10 births an unusually low number of girts? Explain : because1 O B, No 1 grl is not an unusually low number of girls, because I girl is less than the minimum usual value O D. Not enough information is given

Explanation / Answer

Solution: The maximum usual value is 8.5

The range rule of thumb for the maximum usual value is given by the formula below, where and are the mean and standard deviation, respectively, for a probability distribution.
maximum usual value = + 2

= 5.06 + 2(1.6978)

= 8.4556

The minimum usual value is 1.7.

minimum u sual value = – 2

=  5.06 - 2(1.6978)

= 1.6644

=> option A. Yes, 1 girl is an unusually low number of girls, because 1 girl is outside of the range of usual values.

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