A test consists of 50 multiple choice questions, each with five possible answers, only one of which is correct. Find the mean and the standard deviation of the number of correct answers. Round the answer to the nearest hundreth.

What is known as the rate of business expansion through increasing output and sales as opposed to mergers, acquisitions, and takeovers? a- organic growth b- corporate growth c- inorganic growth d- monetary growth

17 a tourist was planning a trip by car for travelling at some constant speed for 2.5 hours. however, he found that if he increases the speed by 20 km/h he can cover the same distance in 30 minutes less time than it was planned. what was the planned speed of the tourist, in km/h?

Igot a 80% on my final to os ya take these points in return