A bank manager is interested in the amount of cash being withdrawn each Friday. He collects data on the last 90 Fridays and compiles them in the accompanying table. The mean is 340 and the standard deviation is 64. Determine whether the amount of cash withdrawn follows a normal distribution. Use a 5 % significance level.

Transcribed Image Text:

Cash withdrawn Less than 250 250-300 301-350 351-400 401-450 More than 450 Frequency 5 21 25 20 15 4