Dr.Johnson is studying the effects of aspirin on heart rate.He believes that aspirin will lower heart rate.He has 2 groups the treatment group receives 80mg of aspirin for a week (n=4) the control group received a placebo (n=4) and their heart rates are compared.Below is his data in which heart rate is beats per minute.He sets his alpha level at 0.05 and uses a directional test. 
What is the 95% confidence intervals for Dr.Johnson's study?
A) 5.78 to 15.72
B) 5.99 to 15.52
C) 6.78 to 17.78
D) None of these
Correct Answer:
Verified
Q2: Before a researcher decides what statistical test,and
Q7: JJ just used an Independent groups t-test
Q11: Dr.Johnson is studying the effects of aspirin
Q14: Dr.Johnson is studying the effects of aspirin
Q15: A directional alternative hypothesis is written as_.
A)H0:
Q16: An independent groups t-test has _levels of
Q18: A non-directional alternative hypothesis is written as
Q19: Dr.Johnson is studying the effects of aspirin
Q20: Confidence intervals are used to_.
A)provide information about
Q33: The mean of a sampling distribution of
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents