Mathematics, 06.05.2020 07:02 u8p4
A variable of two populations has a mean of 20 and a standard deviation of 24 for one of the populations and a mean of 20 and a standard deviation of 16 for the other population. Moreover, the variable is normally distributed on each of the two populations. Complete parts (a) through (c).A. For independent samples of size 9 and 36, respectively, find the mean of (x bar)β - (x bar)β.
B. For independent samples of size 9 and 36, respectively, find the standard deviation of (x bar)β - (x bar)β.
C. Determine the percentage of all pairs of independent samples of sizes 9 and 36, respectively, from the 2 populations with the property that the difference (x bar)β - (x bar)β between the sample means is between -10 and 10.
Answers: 3
Mathematics, 21.06.2019 18:00
Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 β 196 is a difference of squares: (y + 14)2 is a difference of squares: (y β 14)2 is a difference of squares: (y + 14)(y β 14) is not a difference of squares
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Mathematics, 21.06.2019 19:30
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