In a small city is considering increasing the number of cars in an effort to reduce traffic. Before making a final decision, the chief asked the user of cars with survey in other cities

of similar size to determine the relationship between the number of car and the number of traffic reported. The chief gathered the following sample information. City Car Number of traffic Beta 143 w Hamstard 253 5 Inkia 321 10 Saud 121 7 Landmark 459 12 Potter 267 9 Weits 173 2 Use the data to compute a correlation coefficient (r) to determine the correlation between cars and number of traffics, and conduct a test of hypothesis to determine if it is reasonable to conclude that the population correlation is actually zero. Use the 0.05 significance level