Since a t test for independent means may be used when Sample 1 and Sample 2 include different numbers of participants, the two estimates of the population variance are combined into an overall pooled estimate using a(n) . Group of answer choices regression analysis effect estimate weighted average correlation coefficient

1 x=22.52

2: 65/39=604+39x

65x-39x=604

26x=604

x=604/26

×=23.23

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies