1. A prospective author of an introductory level statistics pook is interested in the number of pages in introductory evel statistics books. A random sample of n 15 ntroductory level statistics books is selected yielding a sample average of 972 pages with a sample standard deviation of 85 pages. Suppose the number of pages in an ntroductory level statistics book is normally distributed. a) Calculate a 99% confidence interval for the mean number of pages in an introductory evel statistics book b) Does the confidence interval in part a) suggest that the mo intro otoru

Q: i 12-4x) de

A:

Q: 1. a 2 b 4

A:

Q: 13 dと 2) xp 7-x2

A: Here we have to find the integral value.

Q: P, = 0

A: The permutation expression is given as 10P4. Use the formula for the permutation to find the value…

Q: what is five tmes 2

A: Five time 2 means multiplication of 5 and 2

Q: What is AC? A В

A:

Q: -8- 11. YA 5- y = 5 y= 2x + 1 3- 2 y =2 1+ 1 2 3 The diagram shows the lines y = 2 and y = 5 and…

A:

Q: The table shows the movement of a stock for 30 randomly selected trading days. "Up" means the stock…

A:

Q: I need help finding C, B and b

A:

Q: Letters b, c, d and e.

A:

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.