An airplane flying at 26,400 feet and heading for BWI has been commanded to land at the nearest airport due to a major weather event in Baltimore. The pilot takes two
readings to determine which airport is closest at the time of the announcement,
Pittsburgh International Airport is located to the north with an angle of elevation
reading at 4°. Dulles International Airport is located to the southeast with an angle of
elevation reading at 3º. Which airport is closest to the plane?

Arandom sample of 15 observations is used to estimate the population mean. the sample mean and the standard deviation are calculated as 172 and 63, respectively. assume that the population is normally distributed. a. with 99 confidence, what is the margin of error for the estimation of the population mean? b. construct the 99% confidence interval for the population mean. c. construct the 95% confidence interval for the population mean. d. construct the 83% confidence interval for the population mean. hint: you need to use excel function =t.inv.2t to find the value of t for the interval calculation.

Kate has 50 quarters and dimes. she has a total of $9.80. how many dimes that she have?

Ay = 6, cy = 15, and yd = 4. what is the measure of by?