Probability from two-way tables Problem set B Answers

1. (a) \(\frac{7}{25}=0.28\)
2. (b) \(\frac{67}{150}\)

1. (a) \(\frac{48}{175}\)
2. (b) \(\frac{3}{5}=0.6\)

1. (a) \(\frac{9}{50}=0.18\)
2. (b) \(\frac{9}{76}\)

\(\frac{1}{3}\)

1. (a) k = 44
2. (b) \(\frac{37}{75}\)
3. (c) \(\frac{11}{34}\)

1. (a) \(\frac{19}{30}\)
2. (b) \(\frac{11}{19}\)

1. (a) Liked it, 30 or over: 26; Did not like it, Under 30: 30; Did not like it, 30 or over: 34
2. (b) \(\frac{13}{80}=0.1625\)
3. (c) \(\frac{3}{10}=0.3\)