G in nov the us unemployment rate was 8.7% the census bureau includes nine states i the northwest region assume the random variable of the interest is the number of thenrthwest states with an unemployment

Answer is given below.

Explanation:

Step 1  

The  random  variable  is :  Number  of  North -eastem  states  with  an unemployment rate in November that was less than 4.5%.  

Step 2 of 2

Since.  the  US  contains  50  states  .

The  number  of  states  will  have  to  be  an integer  value  between  0  and 50  including.

Therefore. the required random variable is: x = 0,1,2,3,-91.

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'

answer; buying the bill at a discount from the face value to be received at maturity;