ccording to the National Health Statistics Report, a sample of 360 one-year old boys ad a mean weight of 25lbs. Assume the population standard deviation is o = 5.3 lbs et the confidence level be 92%. The standard error s. ‚e(x) : = The margin of error E= [Select] The 92% confidence interval for the true mean weight of U.S. one-year old baby boy [Select] << [Select] μ< [Select] If we decrease the sample size to 200, the standard error will [Select] men the multiplier z* will [Select] [ Select] [ Select] > ‚ then the margin of error E and finally the confidence interval will

Use the normal distribution of SAT critical reading scores for which the mean is 502 and the standard deviation is 116. Assume the variable x is normally distributed. (a) What percent of the SAT verbal scores are less than 550? (b) If 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 525? Click to view page 1 of the standard normal table. Click to view page 2 of the standard normal table. (a) Approximately % of the SAT verbal scores are less than 550. (Round to two decimal places as needed.)

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 normal distribution of SAT critical reading scores for which the mean is 504 and the standard deviation is 114. Assume the variable x is normally distributed. (a) What percent of the SAT verbal scores are less than 550? (b) If 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 525? Click to view page 1 of the standard normal table. Click to view page 2 of the standard normal table. ww (a) Approximately % of the SAT verbal scores are less than 550. 745 (Round to two decimal places as needed.) 725229 Check answer ct:

Use the normal distribution of SAT critical reading scores for which the mean is 502 and the standard deviation is 109. Assume the variable x is normally distributed. (a) What percent of the SAT verbal scores are less than 675? (b) If 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 575? Click to view page 1 of the standard normal table. Click to view page 2 of the standard normal table. (a) Approximately % of the SAT verbal scores are less than 675. (Round to two decimal places as needed.) (b) You would expect that approximately whole number as needed.) SAT verbal scores would be greater than 575. (Round to the nearest