A90% confidence interval for the mean percentage of
airlinereservations being canceled on the day of the flight is
(3.6%,6.1%). what is the point estimator of the mean percentage
ofreservations that are canceled on the day of the flight?

 The point estimator of the mean percentage  of reservations that are canceled on the day of the flight is 4.85% .

Step-by-step explanation:

Given : A 90% confidence interval for the mean percentage of  airline reservations being canceled on the day of the flight is  (3.6%,6.1%).

We know that the sample mean is the best estimate of the population mean.

The point estimator of mean is half of the sum of limits of the confidence interval.

The sum of the limits of the confidence interval = 3.6%+6.1% =9.7%

The , Point estimator of mean = (sum of the limits) ÷ 2

= (9.7%) ÷ 2 = 4.85%

Hence, the point estimator of the mean percentage  of reservations that are canceled on the day of the flight is 4.85% .

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.

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