Mathematics, 04.05.2021 16:10, jblac
A researcher believes that average dwelling house size in one region of the country has declined in the last five years. From property records he took a random sample of fifty houses from the population (Population 1) of all houses in service this year and a random sample of fifty houses from the population (Population 2) of all houses in service five years ago, with the following results:
now n1 = 50 ¯ x1 = 2392 s1 = 325 past n2 = 50 ¯ x2 = 2434 s2 = 336
The populations may be assumed to be normally distributed with equal standard deviations. Test whether the mean house size now is less than what it was five years ago, at the 10% level of significance, in the following series of steps.
Required:
a. State the null and alternative hypotheses for the test.
b. Construct the rejection region.
c. Compute the value of the test statistic, and make a decision.
d. State a conclusion about the means, based on the test you performed.
Answers: 1
Mathematics, 21.06.2019 18:00, milagrosee12
Me, the vertices of quadrilateral coat are c(2,0), o(7,0), a(7,2) and t(2,2). prove that coat is a rectangle.
Answers: 3
Mathematics, 22.06.2019 00:30, carriboneman
"which statement is necessarily true if bd is an altitude to the hypotenuse of right ? abc? a.) ? adb? ? bdc b.) ? adb~? bdc c.) abbc=acbd d.) ? bac? ? bdc"
Answers: 3
Mathematics, 22.06.2019 01:00, saigeshort
Pentagon abcde is dilated according to the rule do,3(x, y) to create the image pentagon a'b'c'd'e', which is shown on the graph. what are the coordinates of point a of the pre-image? a) (-1, 1)b) (-1, 2)c) (-9, 6)d) (-9, 18)
Answers: 3
Mathematics, 22.06.2019 04:00, calebwoodall6477
Which is the standard form for this number? (2 x 10) + (5 x 1) + (8 x 1 10,000 )
Answers: 1
A researcher believes that average dwelling house size in one region of the country has declined in...
Mathematics, 20.01.2021 15:40
History, 20.01.2021 15:40
Mathematics, 20.01.2021 15:40
History, 20.01.2021 15:40
Mathematics, 20.01.2021 15:40