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Perform a hypothesis test to determine if a difference exists in the proportion of uninsured drivers...

Perform a hypothesis test to determine if a difference exists in the proportion of uninsured drivers between the counties of Santa Clara and San Mateo. A random sample of 150 drivers from Santa Clara found that 42 were uninsured. A random sample of 125 drivers from San Mateo found that 23 were uninsured. Define Population 1 as Santa Clara drivers and Population 2 as San Mateo drivers. Construct a 90% confidence interval for the difference in population proportions and interpret the results.

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