K Use the confidence interval to find the margin of error and the sample mean. Question list (0.224,0.380) . . . O Question 7 The margin of error is 7. O Question 8 O Question 9 Question 10 O Question 11 Question 12 Question 13Question list 0 Question 7 0 Question 8 0 Question 9 0 Question 10 0 Question 11 0 Question 12 0 Question 13 I Find the minimum sample size n needed to estimate u for the given values of c, 5, and E. c=0.90, 5:9.1, and E=2 E) Assume that a preliminary sample has at least 30 members. n = Cl (Round up to the nearest whole number.) Use the confidence interval to find the estimated margin of error. Then find the sample mean. Question list K A biologist reports a confidence interval of (4.4,5.0) when estimating the mean height (in centimeters) of a sample of seedlings. O Question 7 . . . The estimated margin of error is O Question 8 Question 9 O Question 10 Question 11 O Question 12 O Question 13