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in performing a chi-square goodness of fit test for a normal distribution, a researcher wants to...

in performing a chi-square goodness of fit test for a normal distribution, a researcher wants to make sure that all of the expected cell frequencies are at least five. the sample is divided into 7 intervals. thw seco d through the sixth intervals all have expected cell frequencies of at least five. the first and the last interval have expected cell frequencies of 1.5 each. after adjusting the number of intervals, the freedom for the chi-square statistic is

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