Question

Lily

留学先の統計学の問題です。
4、5、2問あります。
後、数時間で提出となり、焦っております。
どなたかお力添えをお願いします😭😭😭
時差があり、深夜回答はたいへんありがたいです。
朝までにお願いします。

4. The temperature of the Earth at different sites can be measured in two ways. One, by taking
readings using thermometers on the ground (x), which is extremely tedious and time
consuming. Second, bylasers positioned on satellites revolving about the Earth (v). which ie a
less accurate method and may be biased. The readings for both are given below:
Ground Therm., x
Satellite Laser, y
Site
1
4.6
4.7
2
17.3
19.5
3
12.2
12.5
4
3.6
4.2
5
6.2
6.0
6
14.8
15.4
7
11.4
14.9
8
14.9
17.8
emignaia
9
9.3
9.7
10
10.4
10.5
11
7.2
7.4
You would like to test the claim that the Laser method gives a significantly higher reading than the
ground therm. method. You may assume that the difference between pairs of scores is approximately
normal.
A) Would testing for a difference in means or a paired difference test be better to use here? Why?
B) Perform the test you concluded in part A).
200 seetV
C) Would you have any reservations about yourinference? Why?

Do women use more coupons when shopping then men? Customers randomly selected at a
grocery store included 445 women and 172 men. Of the women, 74 used coupons, as did 12
5.
of the men.
A) Iflasked you to createa confidence interval for the difference in the population parameter
being compared here, would you be creating one for the difference in the pop. Means or pon
Proportions? How do you know?
B) Create a 99% confidence interval for the difference in population parameters you found in part
A). Give a conclusion about the interval using 1 -2 sentences.
C) Does it seem that there is a big difference? How can you tell?
D) Perform a hypothesis test to provide more evidence to your claim in C).

統計学 数学