IHP340 5-2 Wiley Plus Homework 2025 passed 1st attempt
Southern New Hampshire University
Question 1 of 13
The states located in the Midwestern region of the country typically
experience a large number of tornados every year. The number of tornadoes
from 2000–2011 for four Midwestern states (Kansas, Nebraska, South
Dakota, and Iowa) are displayed in the side- by-side boxplots.
Which state has an outlier?
Kansas
Nebraska
South
Dakota Iowa
Question 2 of 13
Intensive Care Unit (ICU) Admissions
A dataset contains information about a sample of patients admitted to a
hospital Intensive Care Unit (ICU).
For the research question below, define any relevant parameters and state
the appropriate null and alternative hypotheses.
Is the average age of ICU patients at this hospital greater than 50?
Select answer from the options below - Correct!
H0: μ>50 vs HA: μ=50H0: μ>50
Question 3 of 13
Multiple Sclerosis and Sunlight
It is believed that sunlight offers some protection against multiple sclerosis
(MS) since the disease is rare near the equator and more prevalent at high
latitudes. What is it about sunlight that offers this protection? To find out,
researchers1 injected mice with proteins that induce a condition in mice
comparable to MS in humans. The control mice got only the injection, while a
second group of mice were exposed to UV light before and after the
injection, and a third group of mice received vitamin D supplements before
and after the injection. In the test comparing UV light to the control group,
evidence was found that the mice exposed to UV suppressed the MS-like
disease significantly better than the control mice. In the test comparing mice
getting vitamin D supplements to the
, control group, the mice given the vitamin D did not fare significantly better
than the control group. If the p-values for the two tests are 1) 0.322 and 2)
0.006 , which p-value goes with which test?
Test
UV 2
Vitamin D
1
Test
Question 4 of 13
Significance Levels
Test A is described in a journal article as being significant with
"𝑃<0.01P<0.01"; Test B in the same article is described as being significant
with "𝑃<0.10P<0.10". Using only this information, which test would you
suspect provides stronger evidence for its alternative hypothesis?
Select answer from the options
below Test A
Test B
Question 5 of 13
Mercury Levels in Fish
Figure 1 shows a scatterplot of the acidity (pH) for a sample of 𝑛=53n=53
Florida lakes vs the average mercury level (ppm) found in fish taken from
each lake. There appears to be a negative trend in the scatterplot, and we
wish to test whether there is significant evidence of a negative association
between pH and mercury levels.
Figure 1: Water pH vs mercury levels of fish in Florida lakes
Part 2
Your answer is correct.
(b) For these data, a statistical software package produces the following
output:
𝑟=−0.575r=-0.575 𝑝p-value=0.000017=0.000017.
Southern New Hampshire University
Question 1 of 13
The states located in the Midwestern region of the country typically
experience a large number of tornados every year. The number of tornadoes
from 2000–2011 for four Midwestern states (Kansas, Nebraska, South
Dakota, and Iowa) are displayed in the side- by-side boxplots.
Which state has an outlier?
Kansas
Nebraska
South
Dakota Iowa
Question 2 of 13
Intensive Care Unit (ICU) Admissions
A dataset contains information about a sample of patients admitted to a
hospital Intensive Care Unit (ICU).
For the research question below, define any relevant parameters and state
the appropriate null and alternative hypotheses.
Is the average age of ICU patients at this hospital greater than 50?
Select answer from the options below - Correct!
H0: μ>50 vs HA: μ=50H0: μ>50
Question 3 of 13
Multiple Sclerosis and Sunlight
It is believed that sunlight offers some protection against multiple sclerosis
(MS) since the disease is rare near the equator and more prevalent at high
latitudes. What is it about sunlight that offers this protection? To find out,
researchers1 injected mice with proteins that induce a condition in mice
comparable to MS in humans. The control mice got only the injection, while a
second group of mice were exposed to UV light before and after the
injection, and a third group of mice received vitamin D supplements before
and after the injection. In the test comparing UV light to the control group,
evidence was found that the mice exposed to UV suppressed the MS-like
disease significantly better than the control mice. In the test comparing mice
getting vitamin D supplements to the
, control group, the mice given the vitamin D did not fare significantly better
than the control group. If the p-values for the two tests are 1) 0.322 and 2)
0.006 , which p-value goes with which test?
Test
UV 2
Vitamin D
1
Test
Question 4 of 13
Significance Levels
Test A is described in a journal article as being significant with
"𝑃<0.01P<0.01"; Test B in the same article is described as being significant
with "𝑃<0.10P<0.10". Using only this information, which test would you
suspect provides stronger evidence for its alternative hypothesis?
Select answer from the options
below Test A
Test B
Question 5 of 13
Mercury Levels in Fish
Figure 1 shows a scatterplot of the acidity (pH) for a sample of 𝑛=53n=53
Florida lakes vs the average mercury level (ppm) found in fish taken from
each lake. There appears to be a negative trend in the scatterplot, and we
wish to test whether there is significant evidence of a negative association
between pH and mercury levels.
Figure 1: Water pH vs mercury levels of fish in Florida lakes
Part 2
Your answer is correct.
(b) For these data, a statistical software package produces the following
output:
𝑟=−0.575r=-0.575 𝑝p-value=0.000017=0.000017.
