A preliminary study of the fall lobster catch showed that for 43 lobsters selected at random the mean weight was 3.4 lbs with a standard deviation of 0.7 lbs. Find a 95% confidence interval for the population mean weight of the fall lobsters using the information below. x-bar std dev Confidence Level Margin of Error Point Estimate round off to 2 decimal places round off to 2 decimal places Lower Limit Upper Limit Interpret the confidence interval in context of the problem
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.
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