Mathematics, 05.05.2020 07:13 klanderos890

In recent years the mean number of miles driven per year by residents of a particular state was 11,568. A researcher wishes to test, at the 5% level of significance, whether the mean is different now. In a random sample of 62 drivers, the mean and sample standard deviation of the number of miles driven last year were 10,822 and 1,741, respectively.

(a) The relevant hypotheses are

(a) H0 :µ =11, 568 Vs Ha :µ ≠11, 568 (b) H0 :µ =10,822 Vs Ha :µ ≠10,822 (c) H0 : X =11, 568 Vs Ha : X ≠11, 568 (d) H0 : X =10,822 Vs Ha : X ≠10,822

(b) The value of the test statistic is about

(a) -3.345; (b) 3.376; (c) 3.345; (d) -2.855; (e) -3.376

(c) The rejection region is

(a) (-[infinity],-2]U[2,[infinity]) (b) (-[infinity],-2] (c) (-[infinity],-1.96]U[1.96,[infinity ]) (d) (-[infinity],-1.96] (e) (-[infinity],-1.670]

Answers: 3

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 14:00

9. (y^-5)^10y^10 a. y^-60 b. y^60 c. y^-150 d. y^150 find the simplified form of each expression. 10. (4/7^5)^2 a.8/14^10 b.16/49^25 c.16/49y^10 d.8/14y^25 11. determine if the number 3.43 times 10^-6 is written in scientific notation. if not, explain. a. yes; the number is written scientific notation. b. no; the first factor is not a number between 1 and 10. c. no; it is not written as a number times a power of 10

Answers: 3

Answer

Mathematics, 21.06.2019 19:50

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

Answers: 1

Answer

Mathematics, 21.06.2019 21:40

Question 1 of 10 2 points different groups of 50 graduates of an engineering school were asked the starting annual salary for their first engineering job after graduation, and the sampling variability was low. if the average salary of one of the groups was $65,000, which of these is least likely to be the average salary of another of the groups? o a. $64,000 o b. $65,000 o c. $67,000 o d. $54,000

Answers: 2

Answer

Mathematics, 21.06.2019 23:10

Larry wants to buy some carpeting for his living room. the length of the room is 4 times the width and the total area of the room is 16 square meters. what is the length of the living room

Answers: 1

Answer

You know the right answer?

In recent years the mean number of miles driven per year by residents of a particular state was 11,5...

Questions

Mathematics, 29.10.2019 20:31

Write a unit rate for the situation. 3600 stitches in 3 minutes stitches per minute...