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A statistics on Vietnamese population indicates that:

0.21 0.25 0.24 0.13

(i) All people have at least one smartphone. (ii) 70% of the population has more than one smartphone. (iii) 20% of the population has one iPhone. (iv) Of those who have more than one smartphone, 15% has an iPhone. What is the probability that a randomly selected person has exactly one smartphone and it is not an iPhone. |

Find the dice which is different from the rest.

Answer Answer Answer Answer

A quick COVID-19 virus test detects positive results 95% of the time when the virus is actually present. This test detects positive results 0.5% of the time when the virus is not actually present. Provided that 1% of the population actually are infected by the COVID-19 virus, calculate the likelihood that a person actually is infected by the virus given that the test detects a positive result. 0.950 0.324 0.657 0.945

The tour operator has sold all of 21 tickets for a tour bus to DA NANG which has only 20 seats. Each ticket costs 50 and it is not refunded if a tourist does not join the tour. The probability that an individual tourist will not join the tour is 0.02. If a tourist joins the tour and there is no available seat, 100 will be refunded. What is the expected revenue of the tour operator? 983 933 935 985

Given the data plot below. The correlation coefficient would be closest to: -0.75 0.25 -0.25 0.5

The histogram below shows the number of days to process insurance claims in a particular month from a random sample of claims. Which of the following statements is TRUE? Mean < Median Mean > Median Not enough data to determine the relationship Mean = Median

A company has a market capitalization of $2.0 million and 10,000 shares outstanding. The company awards existing shareholders an option to buy 1 additional share at the price of $150 for every 2 shares currently held. Assume that 1) Only 50% of the shareholders take up that option. 2) The post-option market capitalization of the company equals the pre-option market capitalization plus the additional money raised. 3) You owned 100 shares pre-option, and you fully exercise your awarded option. Calculate your total profit post-option. |

The probability that a randomly chosen person is infected by the COVID-19 virus is 0.25. Persons who are infected by the virus is twice as likely to be DANANG' citizen as those who are not infected by the virus. Determine the likelihood that a person is infected by the virus, given that this person is DANANG's citizen. 1/3 1/4 2/5 1/2

You are given the following information:1) The market value of a bond is estimated to be equal to the present value of all future payments from the bond at the current interest rate

2) The effective duration of a bond is a measurement of how the bond's market value responds to a change in interest rate. (e.g. A bond with duration 5 means that if interest moves by 0.1%, the market value of the bond will move by 5 x 0.1% = 0.5%)

A 5-year-tenor bond with a face value of $1000, pays an annual coupon of $25, $50, $75, $100, $125 at the end of year 1, year 2, year 3, year 4, year 5. At maturity, face value is also repaid. The current interest rate is 5% per annum, calculate the duration of this bond. 3.4 4.4 3.8 5.0

2) The effective duration of a bond is a measurement of how the bond's market value responds to a change in interest rate. (e.g. A bond with duration 5 means that if interest moves by 0.1%, the market value of the bond will move by 5 x 0.1% = 0.5%)

A 5-year-tenor bond with a face value of $1000, pays an annual coupon of $25, $50, $75, $100, $125 at the end of year 1, year 2, year 3, year 4, year 5. At maturity, face value is also repaid. The current interest rate is 5% per annum, calculate the duration of this bond.

Which of the following statements is TRUE? All of the other Outliers affect median more than mean The life expectancy of a 40-year-old is higher than the life expectancy of a 35-year-old If X and Y is negatively correlated, then E(X+Y) < E(X) + E(Y)

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None of the presenters is a teacher. All of the attendees are presenters. Teachers are not attendees Some presenters are teachers Some teachers are attendees Some attendees are teachers

Assume the one-year spot rate is 4%, the two-year spot rate is 4.5%, the three-year spot rate is 5%. Which of the following statements is TRUE? The two-year rate that will exist 1 year from today is 5.5% The rate that an investor can earn on a sum invested today for the next three years is 5.5% The one-year rate that will exist two years from today is 5% The one-year rate that will exist one year from today is 5.5%

Bottle A contains 8 white balls and 12 black balls. Bottle B contains 16 white balls and X black balls. One single ball is taken from each bottle. Provided that the probability that both balls are different color is 0.56, determine X. 20 4 34 24

If (teacher doer lawyer) means (task dangerously implemented) And (cooker mother doer) means (implement task immediately) And (father lawyer singer) means (mission implemented successfully) Then what does "teacher" mean? Implement Implemented Dangerously Task

What is the next figure in the series: C B D A

17 out of 16Đại học Kinh tế Quốc dân, 207 Giải Phóng, Đồng Tâm, Hà Nội, Việt Nam

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