A group of statistics students decided to conduct a survey at their university to find the average (mean)amount of time students spend studying per week.Based on a simple random sample,they surveyed 144 students.The statistics showed that students studied an average of 20 hours per week with a standard deviation of 10 hours.What is the probability that average student study time is between 18 and 22 hours?
A)0.9640
B)0.0160
C)0.0360
D)0.9840

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The Answer of A group of statistics students decided to conduct a survey at their university to find the average (mean)amount of time students spend studying per week.Based on a simple random sample,they surveyed 144 students.The statistics showed that students studied an average of 20 hours per week with a standard deviation of 10 hours.What is the probability that average student study time is between 18 and 22 hours?
A)0.9640
B)0.0160
C)0.0360
D)0.9840

A Group of Statistics Students Decided to Conduct a Survey