Social log-ins involve recommending or sharing an article that you read online. According to Janrain, in the first quarter of 2017, 45% signed in via Facebook compared with 26% for Google. Source: Jainrain.com blog, “Identity and social login trends across the web,” www .janrain.com/blog/identity-trends-across-web/. If a sample of 10 social log-ins is selected, what is the probability that a. more than 5 signed in using Facebook? b. more than 5 signed in using Google? c. none signed in using Facebook? d. What assumptions did you have to make to answer (a) through (c)?