What is the probability of selecting someone who spends less than 31 minutes on social media everyday?

A researcher is studying how much time people spend on social media apps every day. The researcher found that the average time people spent is 48 minutes with a standard deviation of 16 minutes. Given this information, what is the probability of selecting someone who spends less than 31 minutes on social media every day? Hint: Use the appropriate formula for a single score. O 85.54% O 81.23% O 14.46% 17.89%