State the variance and how the normal curve will change when the mean decreases and the standard deviation increases.

Calculate, with the help of a diagram, the percentage of cups that contain more than 500ml of bubble tea with the help of a diagram.

Calculate, with the help of a diagram, the amount for the top and bottom kth percentage of the population, where k is your registration number in your class register.

The following probability statement describes the amount of bubble tea sold. Calculate the value of T with the help of a diagram. P( 560 ml< Amount of Tea< T)=0.05

Case 2 A company offers medical insurance to its employees. A recent study by the HR manager shows the annual medical cost incurred by employees is normally distributed with a mean of $1,280 and a standard deviation of $420. The HR manager is concerned over the increasing cost of medical insurance to the company in recent years.

State the variance and how the normal curve will change when the mean increases and the standard deviation increases.

Calculate, with the help of a diagram, the percentage of the employees who incurred more than $1,500 in annual medical costs.

Calculate, with the help of a diagram, the amount for the top and bottom kth percentage of the population, where k is your registration number in your class register.

The following probability statement describes the annual medical cost incurred by employees. Calculate the value of C with the help of a diagram.

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