Compute the expected frequency for brand

Reference no: EM13120815

A researcher would like to test the claim that 9 out of 10 doctors prefer brand x. A sample of 60 doctors is obtained and each is asked to compare Brand x with another leading brand. The data show that 48 of the doctors picked brand x. If these data were evaluated using a chi-square test for goodness of fit, what is the expected frequency for brand x?

Reference no: EM13120815

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