Calculate a 95% confidence interval for the population proportion of people who believe the governor broke campaign financing laws. Does the result of the poll convince you that fewer than 38% of all U. S. citizens favor that viewpoint?

The 95% confidence interval for the population proportion of people who believe the governor broke campaign financing laws is (33%, 39%).

Step-by-step explanation:

The (1 - α) % confidence interval for population proportion is:

For a 95% confidence interval the critical value of z is:

The sample proportion is, and the sample size is, n = 900.

Compute the 95% confidence interval for the population proportion of people who believe the governor broke campaign financing laws as follows:

The 95% confidence interval for the population proportion of people who believe the governor broke campaign financing laws is (33%, 39%).

The null hypothesis can be defined as:

H₀: More than 38% of all U.S. citizens favor that viewpoint, i.e. p > 0.38.

As the 95% confidence interval consists of the null value so it can concluded that fewer than 38% of all U.S. citizens favor that viewpoint.

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step-by-step explanation: