The spinner is spun 75 times. A spinner has 4 sections labeled A, B, C, D. D is 75 percent, A is 25 percent, and B and C are both around 12.5 percent.
What is the experimental probability of spinning an "A" ? Round your answer to the nearest hundredth if necessary.
Outcome
A
B
C
D
Frequency
20
11
14
30

a.
0.73
c.
0.27
b.
0
d.
0.2

Muscles, a membership-only gym is hoping to open a new branch in a small city in pennsylvania that currently has no fitness centers. according to their research approximately 12,600 residents live within driving distance of the gym. muscles sends out surveys to a sample of 300 randomly selected residents in this area (all of who respond) and finds that 40 residents say they would visit a gym if one was located in their area. based on the past survey research, muscles estimates that approximately 30% of these respondents would actually join the gym if they opened one in the area. based on this information and the results of the sample survey, about how many residents should muscles expect to join its new branch? a) 134 b) 504 c) 1,680 d) 3,780

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

Adriver from the university of florida women’s swimming and diving team is competing in the in ncaa zone b championships