34. ISP Market Share. NetMarketShare.com reported that, in 2014, the worldwide market share for the ISP (Internet service provider) market was as follows.
| Comcast | AT&T | Time- Warner |
Verizon | Others |
|---|---|---|---|---|
| 7% | 7% | 5% | 5% | 76% |
A survey this year of 10,000 randomly selected ISPs provided the following results.
| Comcast | AT&T | Time- Warner |
Verizon | Others |
|---|---|---|---|---|
| 900 | 800 | 600 | 700 | 7000 |
Test whether the population proportions have changed since 2014, using level of significance .