Add.
A. 112
B. 123
C. 121
D. 122
Answer: D
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A hypothesis test is to be performed. State the null and alternative hypotheses.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.
A. Null hypothesis: proportion reporting improvement < 28% Alternative hypothesis: proportion reporting improvement > 28% B. Null hypothesis: proportion reporting improvement > 28% Alternative hypothesis: proportion reporting improvement = 28% C. Null hypothesis: proportion reporting improvement = 28% Alternative hypothesis: proportion reporting improvement > 28% D. Null hypothesis: proportion reporting improvement = 28% Alternative hypothesis: proportion reporting improvement ? 28%
Solve the problem.A wheel with radius 3 m rolls at 20 rad/s. How fast is a point on the rim of the wheel rising when the point is 
radians above the horizontal (and rising)? (Round your answer to one decimal place.)
A. 15.0 m/s B. 30.0 m/s C. 60.0 m/s D. 120.0 m/s
A spectator watches a rowing race from the edge of a river bank. The lead boat is moving in a straight line that is 110 ft from the river bank. If the boat is moving at a constant speed of 10 ft/sec, how fast is the boat moving away from the spectator when it is 600 ft past her? ? Round the answer to the nearest hundredth, if necessary. ? __________ ft/sec
Fill in the blank(s) with the appropriate word(s).
Determine whether the expression is a partial sum of a arithmetic or geometric sequence. Then find the sum.
2.1 + 2.7 + 3.3 + ... + 13.5