Jrceron4423 Jrceron4423
  • 10-11-2022
  • Mathematics
contestada

university dean wants to estimate the average number of hours per week that freshman spend studying, and so she plans to take a survey. she wants to be 99% confident that her survey average is within 0.5 hours of the true number of hours. the standard deviation from a previous study is 2.6 hours. how large of a sample should the dean take to ensure this is true?

Respuesta :

Otras preguntas

a 70° angle, a 30° angle, an 80° angle How many triangles can be made with the angle measures shown here?
If a time traveler visited the Byzantine Empire in the late 11th century, what sign of decline would he or she see? (5 points) a) loss of the Balkan provinces
1. Freedom and _______________________ make market economies possible.
Enter the y coordinate of the solution to this system of equations. y = –2x + 9 –x – y = –1
plz help w math problem!
what is the reason for secession
12.2% of 8600 feet = blank feet
Which tactic did George Creel, the head of the Committee on Public Information, use to gain the support of US citizens for the war?
A kitchen counter is to be covered with tiles that are 4in. Square. How many tiles can be placed along one row of a countertop that is 4ft 8in long?
why was the wilderness such a difficult place to do battle?