Question
In: Statistics and Probability
1) The average resting heart rate for a healthy adult horse in the population is 46...
1) The average resting heart rate for a healthy adult horse in the population is 46 beats per minute, with a standard deviation of 8 beats per minute. A horse whose resting heart rate is in the upper 5% of the distribution may be at risk for a serious illness. If your house has a resting heart rate at 58 beats, would you consider your horse to be at risk? To Answer this CALCULATE the Z score for that heart rate and find the proportion of Z scores above that heart rate.
2) If you had sample data where
Σx² = 3,151
(Σx)² = (175)²
n = 10
What is the variance and standard deviation of your sample?
Solutions
orchestra answered 2 years agoRelated Solutions
24. Assume that the resting heart rate in humans is normally distributed with a population mean...
24. Assume that the resting heart rate in humans is normally
distributed with a population mean of 72 bpm and a standard
deviation of 8 bpm.
a. What proportion of the population has resting heart rates
between 70 and 82 bpm?
b. What proportion of the population has resting heart rates
between 50 and 75 bpm?
c. What proportion of the population has resting heart rates
between 60 and 70 bpm?
d. What proportion of the population has resting heart...
The average hemoglobin count in healthy adult females is approximately normal, with a population mean of...
The average hemoglobin count in healthy adult females is
approximately normal, with a population mean of 14. Suppose a
female patient had a hemoglobin test each month last year, and the
results were:
18
22
20
16
19 14
20
15
19
17
20 18
a. Find the sample mean and standard deviation.
b. At alpha = 0.01 does this indicate that this patient has a
higher average than the general population?
1. A researcher wants to determine the effects that smoking has on resting heart rate. She...
1. A researcher wants
to determine the effects that smoking has on resting heart rate.
She randomly selects 7 individuals from 3 categories: nonsmokers,
light smokers (fewer than 10 cigarettes per day), and heavy smokers
(10 or more cigarettes per day) and obtains the following heart
rate data (beats per minute):
nonsmokers
light smokers
heavy smokers
70
67
79
58
75
80
51
65
77
56
78
77
53
62
86
53
70
68
65
73
83
Use your calculator...
andom samples of resting heart rates are taken from two groups. Population 1 exercises regularly, and...
andom samples of resting heart rates are taken from two groups.
Population 1 exercises regularly, and Population 2 does not. The
data from these two samples is given below:
Population 1: 68, 73, 71, 72, 64, 70, 68
Population 2: 74, 82, 81, 72, 76, 75, 75, 72
Is there evidence, at an α=0.05 level of significance,
to conclude that there those who exercise regularly have lower
resting heart rates? (Use the conservative method for computing
degrees of freedom). Carry...
Random samples of resting heart rates are taken from two groups. Population 1 exercises regularly, and...
Random samples of resting heart rates are taken from
two groups. Population 1 exercises regularly, and Population 2 does
not. The data from these two samples is given below:
Population 1: 71, 68, 67, 70, 70, 70, 67
Population 2: 69, 70, 73, 69, 76, 79, 75, 78
Is there evidence, at an α=0.02 level of significance,
to conclude that there those who exercise regularly have lower
resting heart rates? (Assume that the population variances are
equal.) Carry out an...
Random samples of resting heart rates are taken from two groups. Population 1 exercises regularly, and...
Random samples of resting heart rates are taken from two groups.
Population 1 exercises regularly, and Population 2 does not. The
data from these two samples is given below:
Population 1: 72, 71, 65, 65, 72, 73, 70
Population 2: 72, 72, 75, 70, 73, 69, 77, 77
Is there evidence, at an α=0.06 level of significance, to
conclude that there those who exercise regularly have lower resting
heart rates? (Assume that the population variances are equal.)
Carry out an...
Random samples of resting heart rates are taken from two groups. Population 1 exercises regularly, and...
Random samples of resting heart rates are taken from two groups.
Population 1 exercises regularly, and Population 2 does not. The
data from these two samples is given below:
Population 1: 64, 65, 63, 69, 70, 65, 68
Population 2: 69, 77, 73, 71, 79, 69, 70, 71
Is there evidence, at an α=0.001α=0.001 level of significance,
to conclude that there those who exercise regularly have lower
resting heart rates? (Use the conservative method for computing
degrees of freedom). Carry...
andom samples of resting heart rates are taken from two groups. Population 1 exercises regularly, and...
andom samples of
resting heart rates are taken from two groups. Population 1
exercises regularly, and Population 2 does not. The data from these
two samples is given below:
Population 1: 68, 73,
71, 72, 64, 70, 68
Population 2: 74, 82,
81, 72, 76, 75, 75, 72
Is there evidence, at
an α=0.05 level of significance, to conclude that there
those who exercise regularly have lower resting heart rates? (Use
the conservative method for computing degrees of freedom). Carry...
Random samples of resting heart rates are taken from two groups. Population 1 exercises regularly, and...
Random samples of resting heart rates are taken from two
groups. Population 1 exercises regularly, and Population 2 does
not. The data from these two samples is given below:
Population 1: 70, 70, 71, 71, 70, 71, 62
Population 2: 69, 75, 75, 72, 75, 68, 70, 72
Is there evidence, at an ?=0.05
α
=
0.05
level of significance, to conclude that there those who
exercise regularly have lower resting heart rates? (Assume that the
population variances are equal.)...
Random samples of resting heart rates are taken from two groups. Population 1 exercises regularly, and...
Random samples of resting heart rates are taken from two groups.
Population 1 exercises regularly, and Population 2 does not. The
data from these two samples is given below:
Population 1: 71, 63, 68, 71, 72, 66, 73
Population 2: 68, 78, 71, 68, 75, 69, 76, 72
Is there evidence, at an α=0.07 level of significance, to
conclude that there those who exercise regularly have lower resting
heart rates? Carry out an appropriate hypothesis test, filling in
the information...
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