A machine runs a thousand tests a day and a company wants to analyze the number of successes and failures, so for one day the company records the results of two tests in a row as a sample. They repeat this ten times. Here are the ten samples of size 2: {success, success} {failure, failure} {success, failure} {success, failure} {success, failure} {success, success} {success, failure} {success, failure} {success, success} {success, failure} The company analyzes the number of failures. The mean of the sampling distribution of the proportion is. The standard distribution of the sampling distribution is