Provide an appropriate response.An environmental group is investigating global warming and is conducting a hypothesis test. The hypotheses are as follows: Null hypothesis: The mean temperature has not changed in recent years Alternative hypothesis: The mean temperature has increased in recent yearsDo you think that the environmental group would prefer a significance level of 0.05 or 0.01. Why? Do you think that car manufacturers would prefer a significance level of 0.05 or 0.01? Why?
What will be an ideal response?
The environmental group would prefer a significance level of 0.05 because it is important to reject the null hypothesis if it is false. With a significance level of 0.01, it is harder to reject the null hypothesis - stronger evidence against it is required before it will be rejected. The car manufacturers would prefer a significance level of 0.01 for this reason. Car manufacturers do not want to see the null hypothesis rejected as a finding that temperatures are increasing could lead to stricter regulations on emissions.
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Complete the horizontal analysis for the comparative income statement. Round to the nearest tenth of a percent.
A. 27.6%, -35.7%, 28.9%, 7.6%, 40.6%, 34.4%, 41.0% B. 13.7%, -107.1%, 14.7%, -32.3%, 18.6%, -278.1%, 17.5% C. -27.6%, 35.7%, -28.9%, -7.6%, -40.6%, -34.4%, -41.0% D. 21.6%, -55.6%, 22.4%, 7.0%, 28.9%, 25.6%, 29.1%
Use the properties of logarithms to evaluate the expression.log 10-12
A. log -12 B. -12 C. 12 D. 12 log 10
Provide an appropriate response.Find the exact area of the region bounded by y = x2 + 1, x = 1, x = 3, and the x-axis. Also sketch the region.
What will be an ideal response?
Solve the equation by multiplying both sides by the LCD.
= 1 + 
A. {14} B. {-42, 14} C. {12, -14} D. {-12, 14}