lease answer question a, b and c
Permutations and Combinations
If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba, cb and ca. It is in a particular order. So, this can be called the permutation of a, b, and c. But if the order does not matter then ab is the same as ba. Similarly, bc is the same as cb and ac is the same as ca. Here the list has ab, bc, and ac alone. This can be called the combination of a, b, and c.
Counting Theory
The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.
Please answer question a, b and c
![c) What is the confidence interval using the given population standard deviation? Select the correct choice below and fill in the answer boxes within your choice.
(Round to two decimal places as needed.)
O A. The new confidence interval ()is narrower than the interval from part a.
) is wider than the interval from part a.
O B. The new confidence interval (](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb7efdc13-0dc0-4f4b-a7af-1a61d8f2354f%2Fe5ea459a-7923-43bb-96bb-14e6499533ed%2Fxcif374_processed.png&w=3840&q=75)
![A survey of 25 randomly selected customers found the ages shown (in years). The mean is 31.52 years and the standard deviation is 9.52 years.
a) Construct a 90% confidence interval for the mean age of all customers, assuming that the assumptions and conditions for the confidence interval have been met.
b) How large is the margin of error?
c) How would the confidence interval change if you had assumed that the standard deviation was known to be 10.0 years?
25 39 41 34 33D
25 21 37 33 30
43 30 43 27 23
41 48 21 26 31
14 43 34 36 10
a) What is the confidence interval?
(Round to two decimal places as needed.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb7efdc13-0dc0-4f4b-a7af-1a61d8f2354f%2Fe5ea459a-7923-43bb-96bb-14e6499533ed%2Fijqqv9q_processed.png&w=3840&q=75)
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