subject
Mathematics, 08.03.2021 21:30 skylex

In a random sample of 80 teenagers, the average number of texts handled in a day is 50. The 96% confidence interval for the mean number of texts handled by teens daily is given as 46 to 54. a) Find the value of standard deviation that was used to calculate this CI. b) If the number of participants per sample were doubled, by what factor would the confidence interval change (that is, keeping the same confidence level)

ansver
Answers: 1

Another question on Mathematics

question
Mathematics, 21.06.2019 16:00
Brent needs to paint a logo made using two right triangles. the dimensions of the logo are shown below. what is the difference between the area of the large triangle and the area of the small triangle? (1 point) select one: a. 4.5 cm2 b. 8.5 cm2 c. 16.5 cm2 d. 33.0 cm2
Answers: 1
question
Mathematics, 21.06.2019 17:00
Acircular garden with radius of 8 feet is surrounded by a circular path with a width of 3 feet. what is the approximate area of the path alone? use 3.14 for π
Answers: 3
question
Mathematics, 21.06.2019 17:00
Line gh passes through points (2, 5) and (6, 9). which equation represents line gh? y = x + 3 y = x – 3 y = 3x + 3 y = 3x – 3
Answers: 1
question
Mathematics, 21.06.2019 19:40
An alternative to car buying is to make monthly payments for a period of time, and then return the vehicle to the dealer, or purchase it. this is called
Answers: 3
You know the right answer?
In a random sample of 80 teenagers, the average number of texts handled in a day is 50. The 96% conf...
Questions
question
History, 12.07.2019 15:20
question
Mathematics, 12.07.2019 15:20
question
Computers and Technology, 12.07.2019 15:20
Questions on the website: 13722367