Question

Bighorn sheep are beautiful wild animals found throughout the
western United States. Let *x* be the age of a bighorn sheep
(in years), and let *y* be the mortality rate (percent that
die) for this age group. For example, *x* = 1, *y* =
14 means that 14% of the bighorn sheep between 1 and 2 years old
died. A random sample of Arizona bighorn sheep gave the following
information:

x |
1 | 2 | 3 | 4 | 5 |

y |
15.6 | 18.7 | 14.4 | 19.6 | 20.0 |

Σ*x* = 15; Σ*y* = 88.3; Σ*x*^{2} =
55; Σ*y*^{2} = 1584.57; Σ*xy* = 274.6

**Find r.**

(d) Test the claim that the population correlation coefficient is positive at the 1% level of significance. (Round your test statistic to three decimal places.)

t =

Answer #1

Bighorn sheep are beautiful wild animals found throughout the
western United States. Let x be the age of a bighorn sheep
(in years), and let y be the mortality rate (percent that
die) for this age group. For example, x = 1, y =
14 means that 14% of the bighorn sheep between 1 and 2 years old
died. A random sample of Arizona bighorn sheep gave the following
information:
x
1
2
3
4
5
y
15.6
17.7
14.4...

Bighorn sheep are beautiful wild animals found throughout the
western United States. Let x be the age of a bighorn sheep
(in years), and let y be the mortality rate (percent that
die) for this age group. For example, x = 1, y =
14 means that 14% of the bighorn sheep between 1 and 2 years old
died. A random sample of Arizona bighorn sheep gave the following
information:
x
1
2
3
4
5
y
16.0
18.7
14.4...

Bighorn sheep are beautiful wild animals found throughout the
western United States. Let x be the age of a bighorn sheep
(in years), and let y be the mortality rate (percent that
die) for this age group. For example, x = 1, y =
14 means that 14% of the bighorn sheep between 1 and 2 years old
died. A random sample of Arizona bighorn sheep gave the following
information:
x
1
2
3
4
5
y
13.0
20.5
14.4...

Let x be the age of a licensed driver in years. Let
y be the percentage of all fatal accidents (for a given
age) due to failure to yield the right of way. For example, the
first data pair states that 5% of all fatal accidents of
37-year-olds are due to failure to yield the right of way.
x
37
47
57
67
77
87
y
5
8
10
14
33
46
Complete parts (a) through (e), given Σx =...

Let x be the age of a licensed driver in years. Let
y be the percentage of all fatal accidents (for a given
age) due to failure to yield the right of way. For example, the
first data pair states that 5% of all fatal accidents of
37-year-olds are due to failure to yield the right of way.
x
37
47
57
67
77
87
y
5
8
10
14
27
45
Complete parts (a) through (e), given Σx =...

Let x be the age in years of a licensed automobile
driver. Let y be the percentage of all fatal accidents
(for a given age) due to speeding. For example, the first data pair
indicates that 39% of all fatal accidents of 17-year-olds are due
to speeding.
x
17
27
37
47
57
67
77
y
39
22
22
12
10
7
5
Complete parts (a) through (e), given
Σx = 329, Σy = 117,
Σx2 = 18,263,
Σy2 =...

Let x be the age in years of a licensed automobile
driver. Let y be the percentage of all fatal accidents
(for a given age) due to speeding. For example, the first data pair
indicates that 37% of all fatal accidents of 17-year-olds are due
to speeding.
x 17 27 37 47 57 67 77
y 37 23 18 12 10 7 5
Complete parts (a) through (e), given Σx = 329,
Σy = 112, Σx2 = 18,263,
Σy2 =...

Let x be the age of a licensed driver in years. Let
y be the percentage of all fatal accidents (for a given
age) due to failure to yield the right of way. For example, the
first data pair states that 5% of all fatal accidents of
37-year-olds are due to failure to yield the right of way.
x
37
47
57
67
77
87
y
5
8
10
16
32
42
Complete parts (a) through (e), given Σx =...

Let x be the age in years of a licensed automobile
driver. Let y be the percentage of all fatal accidents
(for a given age) due to speeding. For example, the first data pair
indicates that 34% of all fatal accidents of 17-year-olds are due
to speeding.
x
17
27
37
47
57
67
77
y
34
28
18
12
10
7
5
Complete parts (a) through (e), given
Σx = 329, Σy = 114,
Σx2 = 18,263,
Σy2 =...

An economist is studying the job market in Denver area
neighborhoods. Let x represent the total number of jobs in a given
neighborhood, and let y represent the number of entry-level jobs in
the same neighborhood. A sample of six Denver neighborhoods gave
the following information (units in hundreds of jobs). x 14 31 49
28 50 25 y 1 3 7 5 9 3 Complete parts
(a) through (e), given: Σx = 197,Σy = 28 ,Σx2 = 7467 ,Σy2...

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