If n=480 and p (p-hat) = 0.39, construct a 95% confidence interval. Give your answers to three decimals.

Use the confidence interval to find the estimated margin of error. Then find the sample mean.   A biologist reports a confidence interval of (3.9,5.5) when estimating the mean height​ (in centimeters) of a sample of seedlings.       Question content area bottom Part 1 The estimated margin of error is enter your response here   .

Construct a 96% confidence interval if x=75 and n=200. Round your answers to 3 decimal places.

For the same sample statistics, which level of confidence would produce the widest confidence interval? Explain your reasoning. Choose the correct answer below. 99%, because as the level of confidence increases, ze decreases. 99%, because as the level of confidence increases, Z increases. O 90%, because as the level of confidence decreases, ze increases. 90%, because as the level of confidence decreases, Zc decreases.