23. Auto Accidents A recent year’s records of auto accidents occurring on a given section of highway were classified according to whether the resulting damage was $3000 or more and to whether a physical injury resulted from the accident. The data follows: 

a. Estimate the true proportion of accidents involving injuries when the damage was $3000 or more for similar sections of highway and find the margin of error.

b. Estimate the true difference in the proportion of accidents involving injuries for accidents with damage under $3000 and those with damage of $3000 or more. Use a 95% confidence interval.

Transcribed Image Text:

Number of Accidents Number Involving Injuries Under $3000 $3000 or More 32 202 10 41 23