A sample has an n of 99. What is the df of this sample?

 The correct answer is:  " 98 " .

Step-by-step explanation:

In this case, "degrees of freedom" , or "df":

  "df" = n - 1 ;  

  in which:  "n = the numeric value of the sample size."

   Given:  "n = 99" ;  we can plug that value into the formula:

         "df" = n - 1 = 99 - 1 = 98 .

phosphate, calcium ion, chloride ion, neon atom

step-by-step explanation:

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2