In a study of heart surgery, one issue was the effect of drugs called beta-blockers on the pulse rate of patients during surgery. The first thirty patients in a hospital emergency room were given a beta-blocker. The next thirty patients received a placebo. The pulse rate of each patient at a critical point during the operation was recorded. The treatment group had mean 65.2 and standard deviation of 7.8. For the control group, the mean was 70.3 and standard deviation was 8.3. Find a 96% confidence interval for the difference between the two groups.

Your interval calculated previously was :

A doctor claims that the beta-blockers will show a significant difference in pulse rate for the patients. Does your interval support this claim/ Explain why or why not.

If a test of significance were to be run to match this interval, what alpha level would we use?

Would the test cause you to reject or fail to reject, based on the results of the interval? (DO NOT RUN THE INTERVAL

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer

it will be a cylinder. with a diameter of 8 and 4 single pieces high

step-by-step explanation:

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0