A variable of two populations has a mean of 20 and a standard deviation of 24 for one of the populations and a mean of 20 and a standard deviation of 16 for the other population. Moreover, the variable is normally distributed on each of the two populations. Complete parts (a) through (c).A. For independent samples of size 9 and 36, respectively, find the mean of (x bar)₁ - (x bar)₂.

B. For independent samples of size 9 and 36, respectively, find the standard deviation of (x bar)₁ - (x bar)₂.

C. Determine the percentage of all pairs of independent samples of sizes 9 and 36, respectively, from the 2 populations with the property that the difference (x bar)₁ - (x bar)₂ between the sample means is between -10 and 10.

the clues that signal the reader should change tone are the punctuation marks, the grammatical signs. for example, the quotation marks at the beginning of something someone else said literally or the exclamation marks.

the tone of the first line of dialogue until "gettysburg" is a kind tone, a tone of advise. the narrator is trying to the other person in doing something he or she obviously is finding hard to do by giving a piece of advise and bringing up a memory of a successful similar case.

the clue that the reader understand how to read the word "bang" is the exclamation mark. it gives the word a surprise tone, a strong accent.

the best tone for reading the word "bang" is an exciting tone, a surprise one, even a loud one.

the words that should be read with a formal tone are the ones that give factual information. the sentence: mister lincoln couldn't think of anything to say at the gettysburg" gives information about an event and it needs to be read formally, also, when the narrator wants to transmit calmness, a formal and slow tone is needed, because people also transmit messages with the vibrations of our voices and tones.

step-by-step explanation:

mean or average is 40.6

step-by-step explanation:

idk the answer i want to say 10 but then it would be equal so try 9 but then yeah so yeah we love edgen

what