Refer to the accompanying data display that results from a sample of airport data speeds in mbps. the results in the screen display are based on a 95% confidence level. write a statement that correctly interprets the confidence interval. tinterval (13.046,22.15) x overbarequals17.598 sxequals16.01712719 nequals50 choose the correct answer below. a. we have 95% confidence that the limits of 13.05 mbps and 22.15 mbps contain the true value of the mean of the population of all data speeds at the airports. b. we have 95% confidence that the limits of 13.05 mbps and 22.15 mbps contain the sample mean of the data speeds at the airports. c. the limits of 13.05 mbps and 22.15 mbps contain the true value of the mean of the population of all data speeds at the airports. d. the limits of 13.05 mbps and 22.15 mbps contain 95% of all of the data speeds at the airports.

A is the correct answer

Step-by-step explanation:

A confidence interval tells us within some level of certainty (in this case, we are 95% certain) that the true mean of the internet speed at the airport is somewhere in the range of 13.04mbps and 22.15mbps.  We can't say where it is in that range, and we're only 95% confidence, so there's a 5% chance we are wrong and the mean is not in that range.  It could be higher or lower.

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.