c) Allowing for unlimited repeats, what is the probability if we selected a 7 letter arrangement at random that it would contain no repeated letters? d) How many 7 letter arrangements...

c) Allowing for unlimited repeats, what is the probability if we selected a 7 letter arrangement at random that it would contain no repeated letters? d) How many 7 letter arrangements...

I was thinking it may be 10!/5! but am not sure

A website has determined that the length of time that users spend on its site is normally distributed with a mean of 5.83 minutes and a standard deviation of 1.89 minutes

Poisson Probability Distribution The random variable x represents the number of phone calls the author receives in a day, and it has a Poisson distribution with a mean of 7.2 calls. What are the possible...

• Find the probability that when 182 reservations are accepted for American Airlines flight 201, there are more passengers showing up than there are seats available. Is the probability small enough...

What is the probability of selecting 6 letters are there without repeats and contain at least 1 vowel, given the set of 6 letter sequence without repeats? using the word terminal. Sorry...

What is the probability if we selected a 6 letter arrangement at random that is would contain no repeated letters? Using the word TERMINAL

If we wanted to arrange “n” books on a bookshelf that can hold “n” books from “n” boxes that contain large amounts text books items on a bookshelf, how many wayS could this be done

please help me understand this question and how to get the answer

I'm having a bit of trouble with this question. So I know that I need to find the z-score, but after that i'm not sure how to fer the exact percentage? I know the formulas for the z-score and...

a. 8 b. 4 c. 6 d. 2 I know the answer is 6, but I don't understand how it was obtained

I'm stuck on this question, I know the formula for z score is Individual score - mean, divided by the standard deviation and the raw score is Z score times standard deviation +...

1. A website has determined that the length of time that users spend on its site is normally distributed with a mean of 5.83 minutes and a standard deviation of 1.89 minutes. Find: (a) the...

There is evidence that cytotoxic T lymphocytes (T cells) participate in controlling tumor growth and that they can be harnessed to use the body's immune system to treat cancer. One study investigated...

You have two raw scores: one is 73 inches and the other is 69 inches. What is the chance of a third score falling between these two scores?

Trying to do a power calculation have a standard deviation as well.

homework questions fro my stats class that I need answers too please

3 2 3 4 4 8 5 1 4 5 6 5 6 6 7 7 3 4 5 6 6 9 8 0...

Mean is 27.8 and the standard deviation is 4.79

In a study at West Virginia University Hospital, researchers investigated smoking behavior of cancer patients to create a program to help patients stop smoking. They published the results in Smoking...

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