In Bash, an exit code of 0 indicates success.

Which commands show the start or end of a file? (Select all that apply.)

Which are version control tools mentioned in the lecture? (Select all that apply.)

Which are commonly used Awk built-in variables? (Select all that apply.)

In Bash, what does a shebang line do?

Which are repository hosting services from the lecture? (Select all that apply.)

Compared to SVN, Git is what type of version control system?

A designed experiment is described. Identify the specified element of the experiment.In a clinical trial, 780 participants suffering from high blood pressure were randomly assigned to one of three groups. Over a one-month period, the first group received a low dosage of an experimental drug, the second group received a high dosage of the drug, and the third group received a placebo. The diastolic blood pressure of each participant was measured at the beginning and at the end of the period and the change in blood pressure was recorded. Identify the response variable.

Provide the best answer for the requested table entry.The data in the following table reflect the amount of time 40 students in a section of Statistics 101 spend on homework each day. Determine the value that should be entered in the relative frequency column for the class 45-59.

Provide an appropriate response.Several watch-dog consumer groups have criticized the fast food industry for serving food with excessive fat content. One watch-dog announced that it will randomly select one fast food chain per week. The watch-dog will then decide, as a group, to purchase one item off the menu that has been advertised the most on television and in the newspapers. The watch-dog will then have that heavily-advertised, just-purchased item professionally sampled for fat content. Weekly results will be posted on the watch-dog’s website. For this scenario, what best describes the watch-dog’s sampling activities each week?