Multiply mentally.
?
?
A. 
B. 
C. 
D. 
E. 
Answer: A
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A hypothesis test is to be performed. Describe the two possible outcomes of the test using the context of the given situation.In a clinical study of an arthritis medication, 28% of those taking the placebo reported improvement. The manufacturer of the medication claims that among those taking the medication, the proportion reporting improvement will be higher than this.The hypotheses are as follows:Null hypothesis: proportion reporting improvement = 28% Alternative hypothesis: proportion reporting improvement > 28%
A. Rejecting the null hypothesis means there is evidence that the proportion reporting improvement is not equal to 28% Failing to reject the null hypothesis means there is insufficient evidence to conclude that the proportion reporting improvement is greater than 28% B. Rejecting the null hypothesis means there is evidence that the proportion reporting improvement is greater than 28% Failing to reject the null hypothesis means there is insufficient evidence to conclude that the proportion reporting improvement is greater than 28% C. Rejecting the alternative hypothesis means there is evidence that the proportion reporting improvement is equal to 28% Accepting the null hypothesis means there is evidence to conclude that the proportion reporting improvement is equal to 28% D. Rejecting the null hypothesis means there is evidence that the proportion reporting improvement is greater than 28% Accepting the null hypothesis means there is evidence to conclude that the proportion reporting improvement is equal to 28%
Solve the problem.A lawyer drives from his home, located 10 mi east and 9 mi north of the town courthouse, to his office, located 3 mi west and 1 mi south of the courthouse. Find the distance between the lawyer's home and his office. Round to the nearest mile, if necessary.
A. 11 mi B. 15 mi C. 16 mi D. 12 mi
Solve the problem by using three variables.A company makes 3 types of cable. Cable A requires 3 black, 3 white, and 2 red wires. B requires 1 black, 2 white, and 1 red. C requires 2 black, 1 white, and 2 red. They used 100 black, 110 white and 90 red wires. How many of each cable were made?
A. 10 cable A; 103 cable B; 20 cable C B. 20 cable A; 30 cable B; 10 cable C C. 10 cable A; 30 cable B; 93 cable C D. 10 cable A; 30 cable B; 20 cable C
A system of nonlinear equations is given. Sketch the graph of the equation of the system and then determine the number of real solutions to the system. Do not solve the system.x2 + y2 = 522y + 3x = 0
A. Two
B. Two
C. Four
D. Two