What is an example of a data cleaning task?

An HR manager wants to count how many employees worked a certain number of hours. What will this code print?

A building maintenance company is analyzing the time between emergency repair requests. They want to model how frequently these calls occur throughout the day. Which distribution would describe the count of requests received in an hour?

A brand manager is estimating the probability that a new product launch will exceed sales targets. Which estimate violates a basic rule of probability?

A customer service team stores three priority levels in a variable. What data structure does this represent?

A manufacturing analyst exports sensor data from the production floor. One column, “Machine Status,” contains the value “Active” for every row in the dataset. What could the analyst do before continuing the analysis?

A food delivery service is studying its delivery times.  For a sample of 10 deliveries, the times were:  32, 28, 35, 32, 30, 32, 29, 30, 35, 28. What is the mode of the delivery times?

 A normal sinus arrhythmia occurs when heart rate:

A logistics manager calculates a probability of 0.12 that a shipment will be delayed due to weather. What is the probability that it will not be delayed due to weather? (Enter a decimal value.  For example, you would use .35, instead of 35%.)

A logistics analyst measures the loading times (in minutes) for three different warehouses and wants to know if their average loading times differ. What hypothesis test should be used?