Statistic
posted by Anonymous .
In a population of over 15,000 patients, the distribution of systolic blood pressure follows the normal curve. Investigators believe the average systolic blood pressure in the population is 120 mm. The investigators take a simple random sample of 6 patients from this population. The systolic blood pressure measurements of these patients have an average of 113.5 mm and an SD (computed with 6 in the denominator) of 12.2 mm. Is the average systolic blood pressure in the population lower than the investigators think? Or is this just chance variation?
PROBLEM 9
The null hypothesis is:
The average blood pressure in the population is 120 mm.
The average blood pressure in the population is less than 120 mm.
The average blood pressure in the population is not equal to 120 mm.
PROBLEM 10
The approximate distribution of the test statistic is (pick the best option)
binomial
hypergeometric
normal t
chisquare
PROBLEM 11
The test is
onetailed
twotailed
PROBLEM 12
The Pvalue of the test is approximately _______%
PROBLEM 13
“The test supports what the investigators think.”
The quoted statement is
True
False
Respond to this Question
Similar Questions

statistical reasoning
Systolic blood pressure for women between the ages of 18 and 24 is normally distributed with a mean of 114.8 (millimeters of mercury) and a standard deviation of 13.1. A. What is the likelihood that an individual woman has a blood … 
Statistics
Suppose we have a set of blood pressures with a mean of 120 Systolic, and a sample standard deviation of 20 points. If we assume a normal distribution of Systolic blood pressures, then between what two values can we be assured 99.7% … 
Statistic & Probability
17. Determine the appropriate approach to conduct a hypothesis test for this claim: The systolic blood pressure of men who run at least five miles each week varies less than does the systolic blood pressure of all men. Sample data: … 
statistics
Suppose we have a set of blood pressures with a mean of 110 Systolic, and a sample standard deviation of 15 points. If we assume a normal distribution of Systolic blood pressures, then between what two values can we be assured 99.7% … 
statistics college
suppose we have a set of blood pressure set with a mean of 120 systolic and a sample standard deviation of 20 points assume a normal distribution of what two values should 95% of all systolic bp lie 
statistics
Suppose that a researcher is interested in estimating the mean systolic blood pressure, , of executives of major corporations. He plans to use the blood pressures of a random sample of executives of major corporations to estimate . … 
Statistics
Jim's systolic blood pressure is a random variable with a mean of 145 mmHg and a standard deviation of 20 mmHg. For Jim's age group, 140 is the cutoff for high blood pressure. If Jim's systolic blood pressure is taken at a randomly … 
math
A special diet is intended to reduce systolic blood pressure among patients diagnosed with stage 2 hypertension. If the diet is effective, the target is to have the average systolic blood pressure of this group be below 150. After … 
statistic
A special diet is intended to reduce systolic blood pressure among patients diagnosed with stage 2 hypertension. If the diet is effective, the target is to have the average systolic blood pressure of this group be below 150. After … 
physic
If an erect person's systolic pressure is measured at 120 mmHg at the level of heart, please calculate the arterial systolic blood pressure in the head of this person (in the unit of mmHg). Assume that the head is 50 cm above the …