T  /  F  0 dB HL is a measureable threshold for a patient with average normal hearing. 

Which of the following is an entry point for Spark SQL?

What does SparkContext.textFile(“path/to/myData/*.txt”) command do?

Walmart, one of the biggest retail companies in the world, uses Apache Spark for:

In the Apache Spark Machine Learning Case Study entitled “Titanic Survival Random Forest Model”, what were the features that were chosen to factor into the Random Forest predictive model prediction of whether or not someone survived the Titanic Iceberg Collision Disaster in the early 20th century?  Roughly speaking, how accurate was the model in its predictions using the Random Forest Machine Learning algorithm on the supervised learning dataset based on these features?

Scala Spark application’s main method consists of:

Which of the following is not a DataFrame transformation?

What is the probability a randomly selected student is male or has a Mac?

What is the probability less than 2 of the selected businesses will use an outside accounting firm for payroll?

The table below indicates color and size of a bowl of 100 marbles.  Color Small Large   Blue 30 10 40 Green 9 8 17 Red 15 5 20 Yellow 10 13 23 Total 64 36 100 total   Question: You select 3 marbles (without replacement) from the bowl. What is the probability you will end up with a blue marble, and a red marble, and then another blue marble? Show at least 2 non-zero digits after the decimal. Show as much work as possible.