Suppose that in a large population, the proportion that is ...

[Diane]

Suppose that in a large population, the proportion that is left-handed is p = 0.10 . Suppose n = 20 people will be randomly selected and X = number of people in the sample who are left-handed. What probability model should be used to find the probability that X = 3?
 a. Binomial
  b. Normal
  c. Uniform
  d. Chi-square

Question 2

A random sample of 40 men drank an average of 20 cups of coffee per week during finals, while a sample of 30 women drank an average of 15 cups of coffee per week. The sample standard deviations were 6 cups for the men and 3 cups for the women. The standard error for the difference between the two sample means is
 a. 1.095
  b. 1.200
  c. 1.549
  d. 2.400

[vickybb89]

Answer to Question 1

A

Answer to Question 2

A

[Diane]

Both answers were spot on, thank you once again

[vickybb89]

Great! Please up vote