Answer:
What is the question
Step-by-step explanation:
Answer:
The t-distribution is used.
Step-by-step explanation:
When we dont know the standard deviation of the population, we use the t-distribution(t-table).
Otherwise, the z-distribution(z-table) is used.
So the answer to this question is the t-distribution.
Answer:
b. 0.86, 0.87
Step-by-step explanation:
a. Find attached solution to a
18/50 people = 0.36
36% like the clothing store.
Then with 125 people..
125 * 0.36 = 45 people