A random sample of 40 prisoners indicates that 10 have high blood pressure. Estimate the probability that another prisoner will appear and when examined, they will have high blood pressure.

To estimate the probability that another prisoner, when examined, will have high blood pressure, you can use the sample proportion as an estimate of the population proportion. In this case, the sample proportion is the proportion of prisoners in the random sample who have high blood pressure. Sample proportion (p̂) = Number of prisoners with high blood pressure / Total sample size p̂ = 10 / 40 p̂ = 1/4 Now, you can use this sample proportion to estimate the probability that another randomly selected prisoner will have high blood pressure. This is your point estimate for the population probability. So, the estimated probability that another prisoner will have high blood pressure is 1/4 or 0.25, which can also be expressed as 25% as a percentage.