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1. A kindergarten class comprises of 14 boys and 11 girls. If the teacher chooses children from the class using random sampling.

a. Find out the probability that the first child selected will be a girl?

b. If the teacher chooses a random sample of n=3 children and first two children are both boys. Find out the probability that the third child chosen will be a girl?

2. Find out sampling with replacement, and why it is used?

3. For normal distribution, recognize z-score location which would separate the distribution in two sections so the there is

a. 70% in the body on right-hand side.

b. 80% in the body on right-hand side.

c. 75% in the body on left-hand side.

d. 90% in the body on left-hand side.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M922530

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