Question 1: Provide one example about descriptive statistics application when you

look for a job after you graduate.

Question 2: THP company would like to know how many bottles of energy drinks

that they sold last month. What kind of statistics that they can apply. Explain reasons.

Question 3: A study by Saigon Tourist co. indicated that 50% of tourists going to

Nha Trang, 40% visit Da Lat and 35% visit both Nha Trang and Da Lat. What is the probability that

a tourist will visit at least one of these places?

Question 4: A shop permits the return of shoes (the return is within five days after the

purchase date). Historical data show that 10 percent of shoes are returned. Five customers buy five pairs

of shoes. What is the probability that none of the pairs of shoes will be returned to the shop?

Question 5: The distribution of product defects follows a normal distribution with

a mean of 180 per month, a standard deviation of 25. About 90 percent of the incomes lie between what two amounts?

Question 6: The length of time FPT provides ADSL service is approximately normally

distributed with a mean of 7 days and a standard deviation of 2 days.

a: What is the probability that the customer must wait between 5 and 8

days?

b: What is the probability a customer waits more than 10 days?

c: Explain why FPT managers would like to estimate probability values

in questions a and b.

Question 7: When you set up a new business, how can you apply standard

deviation and the mean values for evaluating your sales?.