A hospital ER manager has been monitoring the admissions to her clinic over the course of a week. The data she collected is found in the clinic.csv file in your data folder. There were 600 admissions to the ER that week.

The previous year she calculated the average percentage of admissions in the four time blocks: - Morning 15% - Afternoon 30% - Evening 35% - Night 20%

Is there sufficient evidence in the recent data to indicate the proportions have changed?