G Currell & A A Dowman, Wiley-Blackwell, 2009

- In a survey, it is found that 180 out of 1500 men are left-handed

Based on this data select ALL of the following estimations that are true:

(Click here to view the Video Answer) - When rolling two 6-sided dice it is possible to score combined values between 2 and 12.

Select ALL of the statements that are true:

(Click here to view the Video Answer) - A quick survey of 120 patients attending an Accident and Emergency department recorded the numbers of physical injuries to a limb (L) or the body (B), and the number cases due to disease (D):

The total in the table exceeds 120 because some patients had injuries to both a limb and to the body. No patient required treatment for both an injury and disease simultaneously.Category: Limb injury *n*(L)Body injury *n*(B)Disease *n*(D)Numbers: 49 61 18

Select ALL of the following statements that are true

(Click here to view the Video Answer) - Based on the same data as the previous question for patients attending an Accident and Emergency department, the probabilities are given in the table for physical injuries to a limb (L), body (B), both limb and the body (L AND B), together with the probability of treatment for a disease (D):

Select ALL of the following statements that are true:Category: Limb injury *p*(L)Body injury *p*(B)Limb and Body

injury,*p*(L AND B)Disease *p*(D)Probabilities: 0.41 0.51 0.07 0.15

(Click here to view the Video Answer) - Based on the same data as the previous question for patients attending an Accident and Emergency department, the probabilities are given in the table for physical injuries to a limb (L), body (B), both limb and the body (L AND B), together with the probability of treatment for a disease (D):

Data also gives the probability that the patient is male asCategory: Limb injury *p*(L)Body injury *p*(B)Limb and Body

injury,*p*(L AND B)Disease *p*(D)Probabilities: 0.41 0.51 0.07 0.15 *p*(M) = 0.53 and female as*p*(F) =0.47.

Use this data to estimate numbers in specific categories (to 1 dp) out of a random selection of 80 patients.

Select ALL of the following estimations/statements that are correct:

(Click here to view the Video Answer) - Assuming that the approximate probability of a person having a birthday in any particular month is 1 in 12.

Select ALL of the following statements that are true:

(Click here to view the Video Answer) - A screening test for a specific disease is found to have the following characteristics:

- Probability of a**positive result**(indicates disease) for a person who**has**the disease is 0.95.

- Probability of a**negative result**(indicates NO disease) for a person who does**not have**the disease is 0.85.

If 4% of the population has the disease and 1000 randomly selected people are screened for the disease, select ALL of the following statements that are true:

(Click here to view the Video Answer)