A researcher is interested in finding a 98% confidence interval for the mean number of times per day that college students text. The study included 146 students who averaged 36.3 texts per day. The standard deviation was 22.7 texts. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a zv distribution. b. With 98% confidence the population mean number of texts per day is between and texts. c. If many groups of 146 randomly selected members are studied, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population number of texts per day and about percent will not contain the true population mean number of texts per day.

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A:

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A: 23.(i)

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Q: The sum of E(-1)*1 . is equal to (1/2) 3 n=1 5" F TO

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Q: il Mary Shot - A Hail Mary shot is a shot thrown from a place far away from the basket. Since it ar,…

A: Given: Hail Mary shot : Based on piels record 2 out of 500 hail mary shot made by all players i.e…

Q: Hail Mary Shot - A Hail Mary shot is a shot thrown from a place far away from the basket. Since it…

A: Given: Hail Mary shot: Piel witnesses that 2 out of 500 hail mary shot is made. Probability of hail…

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Q: Evaluate  P43 and C96

A: Solution

Q: Find each of the following. \{1,2,5,9,14\} \cup\{1,3,4,8\}

A: Given, 1, 2, 5, 9, 14∪1, 3, 4, 8

Q: what is helpful to do when you have to use more than one unknow?

A:

Q: Show your wo

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Q: Evaluate 2T de.

A: Use the Residue theorem to evaluate this integral.

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Q: I need help and answer key for 14 and 15

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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.