Here are the tips of 25 randomly selected patrons, measured in percent of total bill. 20.8 18.7 19.9 20.6 21.9 23.4 22.8 24.9 22.2 20.3 24.9 22.3 27.0 20.4 22.2 24.0 21.1 22.1 22.0 22.7 19.1 20.6 22.3 22.0 29.4 The standard deviation of tips is known to be 2.5. a) What is the 94% confidence interval for the mean tip of patrons if the distribution of tips is approximately Normal? b) What is the 98% confidence interval for the mean tip of patrons if the distribution of tips is unknown?

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15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.

college

she will travel a distance in the range of 3 - 11 miles