R Intermediate Quiz 5

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Quiz 5
1. What function is used for parallel processing?
2. How to create a sequence of dates between two dates?
3. Which function renames columns?
4. What is `pmax()` used for?
5. Which function generates random numbers from a binomial distribution?
6. How to find the correlation between two vectors?
7. Which function performs a t-test?
8. Which function calculates the cumulative sum?
9. Which function is used for filtering out rows in dplyr?
10. What does the `n()` function in dplyr return?
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