Mathematics, 25.04.2020 00:46 19greenlymoos

Snow avalanches can be a real problem for travelers in the western United States and Canada. A very common type of avalanche is called the slab avalanche. These have been studied extensively by David McClung, a professor of civil engineering at the University of British Columbia. Suppose slab avalanches studied in a region of Canada had an average thickness of %u03BC = 68 cm. The ski patrol at Vail, Colorado, is studying slab avalanches in its region. A random sample of avalanches in spring gave the following thicknesses (in cm).
59 51 76 38 65 54 49 62
68 55 64 67 63 74 65 79(i) Use a calculator with sample mean and standard deviation keys to find x and s. (Round your answers to two decimal places.)
x = 1 cm
s = 2 cm
(ii) Assume the slab thickness has an approximately normal distribution. Use a 1% level of significance to test the claim that the mean slab thickness in the Vail region is different from that in the region of Canada.
(a) What is the level of significance?
(b) What is the value of the sample test statistic?
(c) Find the P-value.

Answers: 3

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 15:50

Adaycare center charges a $75 enrollment fee plus $100 per week. which of the following represents the cost of sending a child to daycare for 14 weeks?

Answers: 2

Answer

Mathematics, 21.06.2019 20:00

Someone answer asap for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =

Answers: 1

Answer

Mathematics, 21.06.2019 21:20

The edge of a cube was found to be 30 cm with a possible error in measurement of 0.4 cm. use differentials to estimate the maximum possible error, relative error, and percentage error in computing the volume of the cube and the surface area of the cube. (round your answers to four decimal places.) (a) the volume of the cube maximum possible error cm3 relative error percentage error % (b) the surface area of the cube maximum possible error cm2 relative error percentage error %

Answers: 3

Answer

Mathematics, 21.06.2019 22:00

Complete the steps to find 4.830 ÷ 5

Answers: 2

Answer

You know the right answer?

Snow avalanches can be a real problem for travelers in the western United States and Canada. A very...

Questions