Mathematics, 25.12.2019 09:31 andria89
Avariable of a population has a mean of \mu = 150 and a standard deviation of \sigma= 21 .a. the sampling distribution of the sample mean for samples of size 49 is approximately normally distributed with mean and standard deviation .b. for part (a) to be true, what assumption did you make about the distribution of the variable under consideration? a. uniform distribution. b. normal distribution. c. no assumption was made. c. is the statement in part (a) still true if the sample size is 16 instead of 49? why or why not? a. yes, the sampling distribution of the sample mean is always normal. b. no. because the distribution of the variable under consideration is not specified, a sample size of at least 30 is needed for part (a) to be true. c. no, the sampling distribution of the sample mean is never normal for sample size less than 30.
Answers: 3
Mathematics, 21.06.2019 15:50
(08.01)consider the following pair of equations: x + y = −2 y = 2x + 10 if the two equations are graphed, at what point do the lines representing the two equations intersect? (−4, 2) (4, 2) (−2, 4) (2, 4)
Answers: 2
Mathematics, 21.06.2019 22:00
Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4
Answers: 2
Mathematics, 21.06.2019 22:30
The area of the map is the product of the length and width. write and expression for the area as the product of the two binomials do not multiply
Answers: 2
Avariable of a population has a mean of \mu = 150 and a standard deviation of \sigma= 21 .a. the sam...
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