Answer:
The median is 150 minutes.
Explanation:
As we know, in our question, we have been told that the distribution of time on social media is known to be NORMAL. So, it’s a NORMAL DISTRIBUTION. And there is a property of normal distribution that it’s mean is equal to median which is also equals to mode.
So we can conclude that:
For Normal Distribution:
Mean = Median = Mode
So, in our question average = 150 minutes = mean
So, according to the property of normal distribution:
Mean = 150 minutes = Median
For further knowledge, graph is displayed in the attachment.