) Decide whether it describes a confidence interval for a proportion or a confidence interval for a mean. ) Apply the correct formula to calculate the confidence interval in the format of an estimate + margin of ror. During the 2016 season, Mark Williams played in 18 golf matches and used his driver club 126 cimes, hitting his drives an average of 278 yards per drive, with a standard deviation of 15 yards per drive. Calculate a 95% confidence interval for the distance he was able to hit his driver club in that season.

Use the given confidence interval to find the margin of error and the sample mean. (11.3,21.1) The sample mean is The margin of error is

Use the confidence interval to find the estimated margin of error. Then find the sample mean. A biologist reports a confidence interval of (4.0,4.8) when estimating the mean height (in centimeters) of a sample of seedlings. The estimated margin of error is

Use the confidence interval to find the margin of error and the sample mean. (0.196,0.300) The margin of error is

A Hollywood film producer is working on a new action film. She wants to estimate the true mean length of action films that have appeared in theatres during the past decade. She randomly selects 30 films and records the run time of each. The average time was 119 minutes with a standard deviation of 21.5 minutes. Construct a 95% confidence interval that estimates the true mean length of action films over the past decade. 3.  Do. Calculate the 95% confidence interval. (97.5, 140.5) (110.83, 127.16) (110.97, 127.03)  (110.58, 127.43)

Use the given confidence interval to find the margin of error and the sample mean. (13.5,21.9)

If a 95% Confidence for the Population Proportion is (0.56, 0.78), fınd its Margin of Error.

Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96

Use the confidence interval to find the estimated margin of error. Then find the sample mean.   A biologist reports a confidence interval of (4.0,4.6) when estimating the mean height​ (in centimeters) of a sample of seedlings. The estimated margin of error is   The sample mean is

At a large high school, an assistant principal wants to know how intelligent the students at the school are. An intelligence test is administered to an SRS of 50 students, out of over 2000 students. The mean score was 115 and the standard deviation was 15. Construct a 99% confidence interval for the mean score of all students in the school. A) (109.32, 120.69) B) (119.58, 123.50) C) (110.87, 129.41) D) Can not be determined from the information given.