Mathematics, 23.05.2020 19:58, jgee13

Corn was grown in two diﬀerent kinds of soils A and B. The heights of the stalks were measured. A sample of 13 stalks from soil A gave a mean height of 6.3 ft and a standard deviation of 1.2 ft. A sample of 16 stalks from soil B gave a mean height of 6.5 ft and a standard deviation of 1.1 ft. Assume the heights are normally distributed. To be specific, assume the heights of stalks from soil A has the distribution N(µA,σ²A), and the heights of stalks from soil B has the distribution N(µB,σ²B).(a) Find a 90% confidence interval for σA/σB. (b) Assume that σA = σB, find a 98% confidence interval for µA – µB.

Answers: 1

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 17:30, cocothunder635

The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a. the profit when the unit price is equal to 0b. the unit price(s) when the profit is equal to 0c. the profit when the unit price is greatestd. the unit price(s) when profit is greatest

Answers: 3

continue

Mathematics, 21.06.2019 18:30, darlene1283

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?

Answers: 3

continue

Mathematics, 21.06.2019 20:30, Mgarcia325

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did

Answers: 1

continue

Mathematics, 21.06.2019 21:30, Bra1nPowers

An internet company charges $8.95 per month for the first 3 months that it hosts your web site. then the company charges $11.95 per month for web hosting. how much money, in dollars, will the company charge for 8 months of web hosting?

Answers: 1

continue

Do you know the correct answer?

Corn was grown in two diﬀerent kinds of soils A and B. The heights of the stalks were measured. A sa...