Question
In: Statistics and Probability
The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the...
The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the reduction in systolic blood pressure is 36.8 for a sample of size 29 and standard deviation 14.7. Estimate how much the drug will lower a typical patient's systolic blood pressure (using a 98% confidence level). Assume the data is from a normally distributed population. Enter your answer as a tri-linear inequality accurate to three decimal places.
Solutions
Expert Solution
Solution :
Given that,
t
/2,df = 2.467
Margin of error = E = t/2,df
* (s /
= 2.467 * (14.7 /
Margin of error = E = 6.734
The 98% confidence interval estimate of the population mean is,
- E < 
<
+ E
36.8 - 6.734 <
< 36.8 + 6.734
30.066 <
< 43.534
(30.066 , 43.534)
orchestra answered 2 years agoRelated Solutions
The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the...
The effectiveness of a blood-pressure drug is being
investigated. An experimenter finds that, on average, the reduction
in systolic blood pressure is 46 for a sample of size 21. Assume
the population standard deviation is 3.6. Estimate how much the
drug will lower a typical patient's systolic blood pressure (using
a 90% confidence level). Assume the data is from a normally
distributed population. Round answers to 2 decimal places where
possible.
The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the...
The effectiveness of a blood-pressure drug is being
investigated. An experimenter finds that, on average, the reduction
in systolic blood pressure is 26.8 for a sample of size 29 and
standard deviation 6.6. Estimate how much the drug will lower a
typical patient's systolic blood pressure (using a 95% confidence
level). Assume the data is from a normally distributed
population.
Enter your answer as a tri-linear inequality accurate to three
decimal places.
____ < μ < _____
The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the...
The effectiveness of a blood-pressure drug is being
investigated. An experimenter finds that, on average, the reduction
in systolic blood pressure is 83.2 for a sample of size 27 and
standard deviation 7.1. Estimate how much the drug will lower a
typical patient's systolic blood pressure (using a 95% confidence
level). Assume the data is from a normally distributed population.
Enter your answer as a tri-linear inequality accurate to three
decimal places.
The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the...
The effectiveness of a blood-pressure drug is being
investigated. An experimenter finds that, on average, the reduction
in systolic blood pressure is 27.8 for a sample of size 26 and
standard deviation 7.3. Estimate how much the drug will lower a
typical patient's systolic blood pressure (using a 80% confidence
level). Assume the data is from a normally distributed population.
Enter your answer as a tri-linear inequality accurate to three
decimal places.
The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the...
The effectiveness of a blood-pressure drug is being
investigated. An experimenter finds that, on average, the reduction
in systolic blood pressure is 16.2 mmHg (millimeters of mercury)
for a sample of size 476 and a sample standard deviation 18.8 mmHg.
How much of mmHg will lower for a typical patient's systolic blood
pressure after taking the drug? Estimate with a 98% confidence.
Preliminary:
Is it safe to assume that n≤5% of all patients with a systolic
blood pressure?
No
Yes...
The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the...
The effectiveness of a blood-pressure drug is being
investigated. An experimenter finds that, on average, the reduction
in systolic blood pressure is 83.2 for a sample of size 1068 and
standard deviation 7.7.
Estimate how much the drug will lower a typical patient's systolic
blood pressure (using a 95% confidence level).
Enter your answer as a tri-linear inequality accurate to one
decimal place (because the sample statistics are reported accurate
to one decimal place).
The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the...
The effectiveness of a blood-pressure drug is being
investigated. An experimenter finds that, on average, the reduction
in systolic blood pressure is 28.1 for a sample of size 23 and
standard deviation 20.3. Estimate how much the drug will lower a
typical patient's systolic blood pressure (using a 90% confidence
level). Assume the data is from a normally distributed
population.
Enter your answer as a tri-linear inequality accurate to three
decimal places.
< μ <
Karen wants to advertise how...
The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the...
The effectiveness of a
blood-pressure drug is being investigated. An experimenter finds
that, on average, the reduction in systolic blood pressure is 40.9
for a sample of size 20 and standard deviation 11.7. Estimate how
much the drug will lower a typical patient's systolic blood
pressure (using a 98% confidence level). Assume the data is from a
normally distributed population.
Enter your answer as a
tri-linear inequality accurate to three decimal places
The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the...
The effectiveness of a blood-pressure drug is being
investigated. An experimenter finds that, on average, the reduction
in systolic blood pressure is 32.3 for a sample of size 22 and
standard deviation 13.5. Estimate how much the drug will lower a
typical patient's systolic blood pressure (using a 99% confidence
level). Assume the data is from a normally distributed
population.
The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the...
The effectiveness of a blood-pressure drug is being
investigated. An experimenter finds that, on average, the reduction
in systolic blood pressure is 72.5 for a sample of size 27 and
standard deviation 7.3. Estimate how much the drug will lower a
typical patient's systolic blood pressure (using a 95% confidence
level). Assume the data is from a normally distributed
population.
Enter your answer as a tri-linear inequality accurate to three
decimal places.
< μμ <
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- A textbook of mass 2.08 kg rests on a frictionless, horizontal surface. A cord attached to...
- Describe a time when someone did not really listen to or understand a point you were...
- Enumerations Create an advanced enumeration to represent months (JANUARY – DECEMBER) called enuMonths Add internal properties...
- What is the minimum size of the automorphism group of a simple directed graph having more...
- The birthday paradox says that the probability (chance) that two people in a room will have...
- #include <iostream> #include "lib.hpp" using namespace std; int main() { // declare the bool bool...
- Why do we compare means instead of individual scores? for comparing average SAT test scores across...
ADVERTISEMENT