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Answer:2006
Step-by-step explanation:
When A = 140:
Plugging into a calculator, t is approximately 7.12. Since t represents years since 1998, we round up to the nearest whole number: t=8. So the population of the city will reach 140 thousand in the year 2006.
Answer:
The alternative hypothesis is .
The critical value is
Step-by-step explanation:
It is claimed that proportion in favor of proportion A is greater than 60%.
This means that at the null hypothesis, we test if the proportion is of at most 60%, that is:
At the alternative hypothesis, we test if the proportion is more than 60%, that is:
What is (are) the critical value?
The critical value is the value of Z with a p-value 1 subtracted by the standard significance level of 0.05, since we are testing if the mean is more than a value, so, looking at the z-table,