Answer:
b. It is used to construct confidence intervals for the population mean when the population standard deviation is known
Step-by-step explanation:
Student's t-distribution, also called sometimes just as t distribution, is a probability distribution that is used to estimate population parameters when you have small sample size, specifically when sample size is less than 30, or when the population standard deviation is unknown.
The t distribution allows us to conduct statistical analyses on samples that does not satisfy the conditions for applying <em>standard normal distribution</em>.
<span>C(t)=t^2+t+7
To get this answer you must add the two equation together, and add together the like terms (Ex. 3t-2t and 5+2)</span>
Answer:
17160
Step-by-step explanation:
first there are 13 options
then there are 13 - 1 that was chosen
then there are 13 - 2 that were chosen
then there are 13 - 3 that were chosen
so that's 13 options, then 12 options, then 11 options, and then 10 options
and in order to figure out all of the possibilties we mutiply the options so
13*12*11*10 = 17160
little further explaining of why this works:
we have a set of letters (3 in a set)
A B C
what are the possible combinations?
AB
AC
BC
BA
CA
CB
the answer is 6 which is also 3 * 2 * 1 = 6
HOPE THAT HELPS!1! ^_^
Answer:
use a graphing calculator
Step-by-step explanation:
go for it mate