Mathematics, 19.12.2019 22:31 ack12

Georgianna claims that in a small city renowned for its music school, the average child takes at least 5 years of piano lessons. we have a random sample of 20 children from the city, with a mean of 4.6 years of piano lessons and a standard deviation of 2.2 years. what is the 90% confidence interval for the average number of years students take piano lessons in this city?

Answers: 3

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 17:30, redbenji1687

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

Answers: 3

continue

Mathematics, 22.06.2019 02:40, lorenialopez1234

The graph shows a vertical translation of y= square root of x cubedwhat is the range of the translated function? {yly < 0}{yly > 0}{yly is a natural number}{yly is a real number}

Answers: 3

continue

Mathematics, 22.06.2019 05:50, erin5678

#5 points possible: 3. total attempts: 5 using your calculator, find the range and standard deviation, round to two decimals places: the table below gives the number of hours spent watching tv last week by a sample of 24 children. 76 57 89 73 88 42 31 46 80 42 38 57 49 50 89 36 69 82 27 88 39 89 95 18 range = standard deviation =

Answers: 1

continue

Mathematics, 22.06.2019 06:30, aaron2113

How much candy at $1.16 a pound should be mixed with candy worth 86¢ a pound in order to obtain a mixture of 60 pounds of candy worth a dollar a pound?

Answers: 1

continue

You know the right answer?

Georgianna claims that in a small city renowned for its music school, the average child takes at lea...