Some scientists believe there is a global warming trend. In one particular study, temperature readings were taken at different locations in 1930 and 1985. The average daily temperatures for the month of June in each of 10 different locations are listed below. Assume the data satisfy the assumption of normality.
|
Location
|
1930
|
1985
|
|
1
|
85
|
84
|
|
2
|
90
|
91
|
|
3
|
70
|
77
|
|
4
|
100
|
96
|
|
5
|
89
|
85
|
|
6
|
41
|
46
|
|
7
|
30
|
31
|
|
8
|
67
|
68
|
|
9
|
55
|
55
|
|
10
|
49
|
48
|
State the hypotheses
What type of statistical analysis should be done in order to test the null hypothesis? Justify your answer.
Do the necessary calculations in order to determine if there is a significant difference in average temperature in 1930 and 1985. Use a significance level of 0.05.
What is your conclusion? Justify your answer.