A group of students received a daily subliminal message. The treatment group x_1

Question

A group of students received a daily subliminal message. The treatment group x_1 ot 10 students chosen at random received the message "Each day I am getting better at math." The control group x2 of 8 students received the neutral message "People are walking down the street." The means for each sample are based on improvement, i.e. post - pre test scores. Two sample T for diff a. Do a 4 step test for whether the treatment brought about greater improvement in math scores than the neutral message. Use alpha = 0.05. b. Find a 90% Cl from output.

Explanation / Answer

a) null hypothesis: mu1 =mu2

alternate hypothesis: mu1>mu2

level of significance =0.05

test stat =1.91

and p value =0.039

as p value is less then 0.05 ; we conclude that treatment brought about greater improvement

b) from above 90% CI =(0.2,6.1)

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.