Question
In: Math
Suppose you are a researcher in a hospital. You are experimenting with a new tranquilizer. You...
Suppose you are a researcher in a hospital. You are experimenting with a new tranquilizer. You collect data from a random sample of 9 patients. The period of effectiveness of the tranquilizer for each patient (in hours) is as follows: 2 2.4 2.7 2.4 2.1 2.1 2.2 2.9 2.1
What is a point estimate for the population mean length of time. (Round answer to 4 decimal places)
Which distribution should you use for this problem? normal distribution or t-distribution
What must be true in order to construct a confidence interval in this situation?
The population standard deviation must be known
The population must be approximately normal
The population mean must be known
The sample size must be greater than 30
Construct a 90% confidence interval for the population mean length of time. Enter your answer as an open-interval (i.e., parentheses) Round upper and lower bounds to two decimal places
What does it mean to be "90% confident" in this problem?
There is a 90% chance that the confidence interval contains the population mean
The confidence interval contains 90% of all samples 90% of all simple random samples of size 9 from this population will result in confidence intervals that contain the population mean
Suppose that the company releases a statement that the mean time for all patients is 2 hours.
Is this possible? No Yes
Is it likely? Yes No
Solutions
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milcah answered 1 year agoRelated Solutions
Suppose you are a researcher in a hospital. You are experimenting with a new tranquilizer. You...
Suppose you are a researcher in a hospital. You are
experimenting with a new tranquilizer. You collect data from a
random sample of 11 patients. The period of effectiveness of the
tranquilizer for each patient (in hours) is as follows:
2.9
3
3
2.5
2.9
3
2.4
2
2.5
2.4
2.5
a. What is a point estimate for the population mean length of time.
(Round answer to 4 decimal places)
b. Which distribution should you use for this problem?
normal...
Suppose you are a researcher in a hospital. You are experimenting with a new tranquilizer. You...
Suppose you are a researcher in a hospital. You are
experimenting with a new tranquilizer. You collect data from a
random sample of 9 patients. The period of effectiveness of the
tranquilizer for each patient (in hours) is as follows:
2.8
2.9
2.7
2
2.5
2.7
2
2.2
2.7
a. What is a point estimate for the population mean length of
time. (Round answer to 4 decimal places)
b. Which distribution should you use for this problem? normal
distribution or...
Suppose you are a researcher in a hospital. You are experimenting with a new tranquilizer. You...
Suppose you are a researcher in a hospital. You are
experimenting with a new tranquilizer. You collect data from a
random sample of 8 patients. The period of effectiveness of the
tranquilizer for each patient (in hours) is as follows:
2.3
2.8
2.3
2.6
2
2
3
2
a. What is a point estimate for the population mean length of time.
(Round answer to 4 decimal places)
b. Which distribution should you use for this problem?
t-distribution
normal distribution
c....
Suppose you are a researcher in a hospital. You are experimenting with a new tranquilizer. You...
Suppose you are a researcher in a hospital. You are
experimenting with a new tranquilizer. You collect data from a
random sample of 11 patients. The period of effectiveness of the
tranquilizer for each patient (in hours) is as follows:
2.4
2
2
2
2
2.9
2.2
2.5
2.3
2.8
2.3
a. What is a point estimate for the population mean length of time.
(Round answer to 4 decimal places)
b. Which distribution should you use for this problem?
normal...
Suppose you are a researcher in a hospital. You are experimenting with a new tranquilizer. You...
Suppose you are a researcher in a hospital. You are
experimenting with a new tranquilizer. You collect data from a
random sample of 11 patients. The period of effectiveness of the
tranquilizer for each patient (in hours) is as follows:
3
3
2.4
2.6
2.4
2
2.2
2.7
2.1
2.5
2.3
What is a point estimate for the population mean length of time.
(Round answer to 4 decimal places)
Which distribution should you use for this problem?
normal distribution
t-distribution...
Suppose you are a researcher in a hospital. You are experimenting with a new tranquilizer. You...
Suppose you are a researcher in a hospital. You are
experimenting with a new tranquilizer. You collect data from a
random sample of 9 patients. The period of effectiveness of the
tranquilizer for each patient (in hours) is as follows:
2.5
2.8
2
2.1
2.6
2.5
2.6
2.6
2.9
a. What is a point estimate for the population mean length of time.
(Round answer to 4 decimal places)
b. Which distribution should you use for this problem?
normal distribution
t-distribution...
Confidence intervals for the mean Suppose you are a researcher in a hospital. You are experimenting...
Confidence intervals for the mean
Suppose you are a researcher in a hospital. You are
experimenting with a new tranquilizer. You collect data from a
random sample of 10 patients. The period of effectiveness of the
tranquilizer for each patient (in hours) is as follows:
3
2.7
2
2.3
2.4
2.6
2.7
2.2
2.3
2.9
a. What is a point estimate for the population mean length of time.
(Round answer to 4 decimal places)
b. Which distribution should you use...
At Community Hospital, the burn center is experimenting with a new plasma compress treatment. A random...
At Community Hospital, the burn center is experimenting with a
new plasma compress treatment. A random sample of
n1 = 308 patients with minor burns received the
plasma compress treatment. Of these patients, it was found that 268
had no visible scars after treatment. Another random sample of
n2 = 420 patients with minor burns received no
plasma compress treatment. For this group, it was found that 97 had
no visible scars after treatment. Let p1 be the
population proportion...
At Community Hospital, the burn center is experimenting with a new plasma compress treatment. A random...
At Community Hospital, the burn center is experimenting with a
new plasma compress treatment. A random sample of
n1 = 302 patients with minor burns received the
plasma compress treatment. Of these patients, it was found that 250
had no visible scars after treatment. Another random sample of
n2 = 440patients with minor burns received no
plasma compress treatment. For this group, it was found that 85 had
no visible scars after treatment. Let p1 be the
population proportion of...
At Community Hospital, the burn center is experimenting with a new plasma compress treatment. A random...
At Community Hospital, the burn center is experimenting with a
new plasma compress treatment. A random sample of n1 = 324 patients
with minor burns received the plasma compress treatment. Of these
patients, it was found that 268 had no visible scars after
treatment. Another random sample of n2 = 418 patients with minor
burns received no plasma compress treatment. For this group, it was
found that 93 had no visible scars after treatment. Let p1 be the
population proportion...
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