Approximately 60% of mathematics students do their homework on time.

In a class of 100 students, whatisthe mean, variance, and standard deviation if we assume normality and use the normal distribution as an approximation of the binomial distribution? Answer choices rounded to the nearest whole number.

• a.)
• Mean = 60
• Variance = 24
• Standard Deviation = 5
• b.)
• Mean = 40
• Variance = 24
• Standard Deviation = 5
• c.)
• Mean = 60
• Variance = 5
• Standard Deviation = 24
• d.)
• Mean = 40
• Variance = 5
• Standard Deviation = 24