Compute the expectations and variances

Assignment Help Basic Statistics

Reference no: EM13116113

Four buses carrying 157 high school students arrive to Montreal. The buses carry, respectively, 33, 42, 34, and 48 students. One of the studetns is randomly selected. Let X denote the number of students that were on the bus carrying this randomly selected student. One of the 4 bus drivers is also randomly selected. Let Y denote the number of students on his bus. Compute the expectations and variances of X and Y?

Reference no: EM13116113

Questions Cloud

Find out coefficient playground slide with an acceleration : Find out the coefficient of kinetic friction between the child and the slide if the slide is inclined at an angle of 29.0 degrees below the horizontal.

Find the estimated index of satisfaction for a person : What is the estimated index of satisfaction for a person who first married at 18, has an annual income of $26,500, has three children living, has assets of $156,000.

Length of receivables conversion period : Last year Bizmart had credit sales of $32 million and a net profit margin of 8%. If Bizmart had accounts receivable of $4.5 million, what was the length of the receivables conversion period?

Cost of foregoing cash discount : Syntech is offered credit terms of 2/10, net 40, but decides to forego taking the cash discount and pays on the 45th day. What is Syntech's cost of foregoing the cash discount?

Compute the expectations and variances : One of the 4 bus drivers is also randomly selected. Let Y denote the number of students on his bus. Compute the expectations and variances of X and Y?

Find vapor pressure of water : Water has vapor pressure of 23.8 torr at 25 degrees celsius. Find vapor pressure of water at 40 degrees celsius if delta H of vaporization is 40.7 KJ/mol.

Explain how the work breakdown structure identify the risk : Explain how the work breakdown structure (WBS) helps assure that a good foundation will help identify the project risks and assure that they will be identified early?

Cost of equity capital-allegheny valley power company : The Allegheny Valley Power Company common stock has a beta of 0.80. If the current risk-free rate is 6.5%(Krf)and the expected return on the common stock as a whole is 16%(Km)

What type of genetic testing is worthwhile : With the completion of the human genome and the identification of various genes, it may be possible to determine whether an individual has a particular disease.

User Account

All Pages