Question

utilizing r, how do you do this function?

Make a 2 dimensional array of normally distributed random numbers in R with 20 rows and 2 columns

Use array(x , dim = c(20, 2)), make sure that the vector, x, has the correct number of observations to match the dimensionality, namely 40 (20 x 2)

Answer 1

> set.seed (531) > # generate 40 random samples from normal distribution with mean 5 and d 2 > normsamples-rnorm(40, mean 5,sd-2) > # ar r ange the 40 samples into 20 rows and 2 column > myarray-array (norms amples,dim-c(20,2)) > myarray L,2] [1,] -2. 3958444 5.784849 [2,] 3.9932973 6. 538571 13,] 3.1168381 3.472117 [4,] 5. 5155404 4.758671 [5,] 4.0620626 4.918670 [6,] 4.1391924 2.612112 17,] 4.4666686 7.516311 18,] 5.8301275 7.797525 19,] 6. 3488834 6. 531361 [10,] 7.0970174 6.156279 [11,] 5.7135322 2.896485 [12,] 1.6303596 4.568714 [13,] 2.8033848 4.454892 [14,] 4.6763017 4.842009 [15,] 4.7885686 7.509651 [16,] 7. 3343112 4.097967 [17,] 4.7568616 6.460075 [18,] 3. 5040778 2. 589283 [19,] 0.7743369 6.130859 [20,] 5.4332662 5. 394304