1 #backward elimination 2 import statsmodels.regression.linear_model as sm 3 4 # add a column of ones as integer data type 5 data = np.append(arr = np.ones ((3755, 1)).astype (int), values = data, axis = 1) 6 7 # choose a significance level usually 0.05, if p>0.05 8 # for the highest values parameter, remove that value 9 x_opt = data[:,[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]] ols=sm.OLS (endog = salary, exog = x_opt).fit() 1 ols.summary()

in python. I have a simple question. Why is file design important? Why is important to know how the data in your text file is arranged?

(True/False): The starting cluster number of a file is stored in the disk parameter table

QUESTION 5 Which of the following is incorrect file handling mode in Python   A. ab   B. xr   C. wb+   D. ab+

In MIPS assembly how do I clear a file after it is opened?

Given the following premises: (1) ∀x (R(x) → S(x))(2) ¬S(c) Use modus tollens to derive the conclusion ¬R(c). Show your step-by-step reasoning.

Explain what the phrase "copy-on-write" means.

*need correct answer plz