Solutions Statistics

The following data represents the digital-mode talk time in hours and the battery capacity in millia

Question: The following data represents the digital-mode talk time in hours and the battery capacity in milliampere-hours of cell phones.

Talk Time Battery Capacity Talk Time Battery Capacity
4.50 800 1.50 450
4.00 1500 2.25 900
3.00 1300 2.25 900
2.00 1550 3.25 600
2.75 900 2.25 700
1.75 875 2.25 800
1.75 750 2.50 800
2.25 1100 2.25 900
1.75 850 2.00 900

a) Compute the correlation coefficient r.

b) At the 0.05 level of significance, is there a significant correlation between the battery capacity and the digital-mode talk time?

c) What conclusions can you reach about the relationship between the battery capacity and the digital-model talk time?

d) You would expect the cell phones with higher battery capacity to have a higher talk time. Is this borne out by the data?

Price: $2.99
Solution: The solution file consists of 2 pages
Solution Format: Word Document


∴ Other downloads you may be interested in ∴

log in to your account

Forgot password?
Don't have a membership account?
REGISTER

reset password

Back to
log in

sign up

Back to
log in