Question

In this problem, assume that the distribution of differences is
approximately normal. *Note*: For degrees of freedom
*d*.*f*. not in the Student's *t* table, use
the closest *d*.*f*. that is *smaller*. In
some situations, this choice of *d*.*f*. may increase
the *P*-value by a small amount and therefore produce a
slightly more "conservative" answer.

Are America's top chief executive officers (CEOs) really worth all
that money? One way to answer this question is to look at row
*B*, the annual company percentage increase in revenue,
versus row *A*, the CEO's annual percentage salary increase
in that same company. use a 5% level of significance. Suppose a
random sample of companies yielded the following data:

B: Percent increasefor company |
26 | 23 | 27 | 18 | 6 | 4 | 21 | 37 |

A: Percent
increasefor CEO |
21 | 23 | 24 | 14 | −4 | 19 | 15 | 30 |

What is the value of the sample test statistic? ______

In this problem, assume that the distribution of differences is
approximately normal. *Note*: For degrees of freedom
*d*.*f*. not in the Student's *t* table, use
the closest *d*.*f*. that is *smaller*. In
some situations, this choice of *d*.*f*. may increase
the *P*-value by a small amount and therefore produce a
slightly more "conservative" answer.

At five weather stations on Trail Ridge Road in Rocky Mountain
National Park, the peak wind gusts (in miles per hour) for January
and April are recorded below. use a= 0.01

Weather Station |
1 |
2 |
3 |
4 |
5 |

January |
137 | 122 | 126 | 64 | 78 |

April |
104 | 115 | 102 | 88 | 61 |

What is the value of the sample test statistic? ________

In this problem, assume that the distribution of differences is
approximately normal. *Note*: For degrees of freedom
*d*.*f*. not in the Student's *t* table, use
the closest *d*.*f*. that is *smaller*. In
some situations, this choice of *d*.*f*. may increase
the *P*-value by a small amount and therefore produce a
slightly more "conservative" answer.

In environmental studies, sex ratios are of great importance. Wolf
society, packs, and ecology have been studied extensively at
different locations in the U.S. and foreign countries. Sex ratios
for eight study sites in northern Europe are shown below. use a 5%
level of significance

Location of Wolf
Pack |
% Males
(Winter) |
% Males
(Summer) |

Finland | 74 | 63 |

Finland | 68 | 59 |

Finland | 64 | 69 |

Lapland | 55 | 48 |

Lapland | 64 | 55 |

Russia | 50 | 50 |

Russia | 41 | 50 |

Russia | 55 | 45 |

What is the value of the sample test statistic? _______

In this problem, assume that the distribution of differences is
approximately normal. *Note*: For degrees of freedom
*d*.*f*. not in the Student's *t* table, use
the closest *d*.*f*. that is *smaller*. In
some situations, this choice of *d*.*f*. may increase
the *P*-value by a small amount and therefore produce a
slightly more "conservative" answer.

In the following data pairs, *A* represents birth rate and
*B* represents death rate per 1000 resident population. The
data are paired by counties in the Midwest. A random sample of 16
counties gave the following information. use a 1% level of
significance

A: |
12.7 | 13.4 | 12.8 | 12.3 | 11.6 | 11.1 | 14.2 | 15.1 |

B: |
9.8 | 14.3 | 10.7 | 14.4 | 13.2 | 12.9 | 10.9 |
10.0 |

A: |
12.5 | 12.3 | 13.1 | 15.8 | 10.3 | 12.7 | 11.1 | 15.7 |

B: |
14.1 | 13.6 | 9.1 | 10.2 | 17.9 | 11.8 | 7.0 | 9.2 |

What is the value of the sample test statistic? ________

In this problem, assume that the distribution of differences is
approximately normal. *Note*: For degrees of freedom
*d*.*f*. not in the Student's *t* table, use
the closest *d*.*f*. that is *smaller*. In
some situations, this choice of *d*.*f*. may increase
the *P*-value by a small amount and therefore produce a
slightly more "conservative" answer.

Are America's top chief executive officers (CEOs) really worth all
that money? One way to answer this question is to look at row
*B*, the annual company percentage increase in revenue,
versus row *A*, the CEO's annual percentage salary increase
in that same company. Suppose a random sample of companies yielded
the following data:

B: Percent increasefor company |
12 | 16 | 30 | 18 | 6 | 4 | 21 | 37 |

A: Percent
increasefor CEO |
22 | 23 | 20 | 14 | -4 | 19 | 15 | 30 |

Do these data indicate that the population mean percentage
increase in corporate revenue (row *B*) is different from
the population mean percentage increase in CEO salary? Use a 5%
level of significance. Solve the problem using the critical region
method of testing. (Let *d* = *B* − *A*. Round
your answers to three decimal places.)

test statistic | = | |

critical value | = |

Answer #1

In this problem, assume that the distribution of differences is
approximately normal. Note: For degrees of freedom
d.f. not in the Student's t table, use
the closest d.f. that is smaller. In
some situations, this choice of d.f. may increase
the P-value by a small amount and therefore produce a
slightly more "conservative" answer.
Suppose that at five weather stations on Trail Ridge Road in Rocky
Mountain National Park, the peak wind gusts (in miles per hour) for
January and...

In this problem, assume that the distribution of differences is
approximately normal. Note: For degrees of freedom d.f. not in the
Student's t table, use the closest d.f. that is smaller. In some
situations, this choice of d.f. may increase the P-value by a small
amount and therefore produce a slightly more "conservative" answer.
At five weather stations on Trail Ridge Road in Rocky Mountain
National Park, the peak wind gusts (in miles per hour) for January
and April are...

In this problem, assume that the distribution of differences is
approximately normal. Note: For degrees of freedom
d.f. not in the Student's t table, use
the closest d.f. that is smaller. In
some situations, this choice of d.f. may increase
the P-value by a small amount and therefore produce a
slightly more "conservative" answer.
Are America's top chief executive officers (CEOs) really worth all
that money? One way to answer this question is to look at row
B, the annual...

In this problem, assume that the distribution of differences is
approximately normal. Note: For degrees of freedom d.f. not in the
Student's t table, use the closest d.f. that is smaller. In some
situations, this choice of d.f. may increase the P-value by a small
amount and therefore produce a slightly more "conservative" answer.
Are America's top chief executive officers (CEOs) really worth all
that money? One way to answer this question is to look at row B,
the annual...

In this problem, assume that the distribution of differences is
approximately normal. Note: For degrees of freedom
d.f. not in the Student's t table, use
the closest d.f. that is smaller. In
some situations, this choice of d.f. may increase
the P-value by a small amount and therefore produce a
slightly more "conservative" answer.
In the following data pairs, A represents birth rate and
B represents death rate per 1000 resident population. The
data are paired by counties in the...

In this problem, assume that the distribution of differences is
approximately normal. Note: For degrees of freedom
d.f. not in the Student's t table, use
the closest d.f. that is smaller. In
some situations, this choice of d.f. may increase
the P-value by a small amount and therefore produce a
slightly more "conservative" answer.
In the following data pairs, A represents birth rate and
B represents death rate per 1000 resident population. The
data are paired by counties in the...

In this problem, assume that the distribution of differences is
approximately normal. Note: For degrees of freedom
d.f. not in the Student's t table, use
the closest d.f. that is smaller. In
some situations, this choice of d.f. may increase
the P-value by a small amount and therefore produce a
slightly more "conservative" answer.
Are America's top chief executive officers (CEOs) really worth all
that money? One way to answer this question is to look at row
B, the annual...

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