Acertain college has m freshmen, m sophomores, m juniors, and m seniors. a certain class is a simple random sample of size n students, i. e., all sets of n of the 4m students are equally likely. let x1, . . , x4 be the numbers of freshmen, . . , seniors in the class.

(a) find the joint pmf of x1, x2, x3, x4.

(b) give both an intuitive explanation and a mathematical justification for whether or not the distri- bution from (a) is multinomial.

(c) find cov(x1, x3), fully simplified. hint: 1+x2+x3+x4 =n.

(d) how does cov(x1,x3) compare to if the distribution in (a) were multinomial? why does this make sense?

answer: get more recipes with 3 magazines for $20! i often use chicken broth instead of water. 3 tablespoons butter, divided; 1/2 cup freshly grated parmigiano-reggiano bring water and salt to a boil in a large saucepan; pour polenta slowly into 5 minutes to thicken; stir and taste for salt before transferring to a serving bowl.

step-by-step explanation: the answer for wha if rt is 10 centimeters long, and wha is st? it’s 6

the answer is 1 becuz if it were 1.0 that would rip apart the entire so ya. : )

~potato.

copyright potato 2019.

if gloria has "carry over" minutes, (that is, any minutes paid for but not used in a month can be applied to her payment for minutes in the next month,) her total usage for the three months is: total minutes = 320 + 243 + 489 = 1052 minutes number of 200 minute blocks = 1052/200 = 5 r52 (that is 5 with a remainder of 52) rounding up the number of 200 minute blocks gives her usage for the three months as 6 blocks. the cost for six blocks is 6 x $25 = $150 she also has 200 - 52 or 148 carry over minutes if gloria pays each month and unused minutes are lost, applying the rounding up procedure to each month gives: first month usage of 320 minutes rounds up to 2 blocks of 200 minutes for a payment of 2 x $25 = $50 second month usage of 243 minutes rounds up to 2 blocks of 200 minutes for a payment of 2 x $25 = $50 third month usage of 489 minutes rounds up to 3 blocks of 200 minutes for a payment of 3 x $25 = $75 total payments for the three months are $50 + $50 + $75 = $175 get the plan with carry over minutes!