SAT, 14.12.2021 04:40 viktoria1198zz
in two common species of flowers, a and b, the proportions of flowers that are blue are pa and pb , respectively. suppose that independent random samples of 50 species-a flowers and 100 species-b flowers are selected. let pˆa be the sample proportion of blue species-a flowers and pˆb be the sample proportion of blue species-b flowers. what is the mean of the sampling distribution of pˆa−pˆb ?
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in two common species of flowers, a and b, the proportions of flowers that are blue are pa and pb ,...
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