Hi, i ned some help on some qn about statistics. can u help me
explain and do the qns? thanks :D
3) Probalility Qn
P(A) A and B mutually exculsive=0
P(B)
Find P(A and B)
4) A study was conducted to determine if listening to
heavy metal music affects critial thinking. To test
the claim 118
subjects were randomly assigned to two groups. Both
groups were administered a basic math skills exam. The first group
took the exam while heavy metal music was piped into the exam room
while the second group took the exam in silent room
The mean score
for the first group was 83 and the mean exam score for the second
group was 96. The researchers consluded that
heavy metal music
negatively affects crtical thinking.
Identify a) the research objective
b) the sample
c) the descriptive statistics
d) the conclusion made in the study
7a) A local politican running for re-election claims that the
mean prison time for car thieves is less than the required 6
years
A sample of 80 convicted car thieves was randomly selected and the
mean length of prison was found to be 5 years and 6 month with a
standard deviation of 1 year and 3 months. At a=0.05 test the
politician claims
b)Suppos you are using a=0.01 to test the claim that u=1050 using a
P value
You are given the sample statistics n=35 x=1020 and o=82 Find the
P- value
Question 3 doesn't seem to be completed yet. P (A) = ?? and P
(B) = ??
For question 4, I bolded the answers above, in the exact
order.
Question 7 stops at 'politician claims'. Where is the rest of
the question?