Question

In: Statistics and Probability

The Red Cross honors and recognizesits best volunteers from time to time. One of the...

The Red Cross honors and recognizes its best volunteers from time to time. One of the Red Cross offices has received 12 nominations for the next group of 4 volunteers to be recognized. Seven of these 12 nominated volunteers are females. If Red Cross office decides to randomly select 4 names out of these 12 nominated volunteers, find the probability that of these 4 volunteers exactly 3 are females.

Expert Solution

Given Data

The Red Cross honors and recognizes its best volunteers from time to time.

One of the Red Cross offices has received 12 nominations for the next group of 4 volunteers to be recognized.

Seven of these 12 nominated volunteers are females.

We use binomial distribution

Where

n = 4 ,

= 0.6667

Exactly 3 are females.

= 0.3951

exactly 3 are females = 0.3951

orchestra answered 2 years ago

[Red Cross Red Shield] The distribution of the amount paid in health claims by Red Cross...

[Red Cross Red Shield] The distribution of the amount paid in health claims by Red Cross Red Shield (RCRS), a medical insurance company, on individual health insurance plans for college students has mean $500, median $400, and standard deviation $550. Consider the variation of the amount paid of a sample of 40 plan members. Do you think that the standard deviation of the sample mean of participants (Stdev[ ]) is smaller than, larger than, or equal to the standard deviation...

An urn contains 10 red and 12 blue balls. They are withdrawn one at a time...

An urn contains 10 red and 12 blue balls. They are withdrawn one at a time without replacement until a total of 4 red balls have been withdrawn. Find the probability that exactly 7 balls withdrawn/

Choose the statement which best describes the “Time Series Momentum”. Select one: a. In Time Series...

Choose the statement which best describes the “Time Series Momentum”. Select one: a. In Time Series Momentum, we form a portfolio of all assets in our universe. First, we use the volatility-scaled returns and then invest appropriately b. Time Series Momentum examines each asset individually. If its recent performance has been bad, then we go short, otherwise we go long. Finally, our portfolio will include all assets c. Time Series Momentum is a special case of Cross-Sectional Momentum where we...

Two students sign up to prepare an honors thesis with a professor. Each can invest time...

Two students sign up to prepare an honors thesis with a professor. Each can invest time in his own project: either no time, one week, or two weeks (these are the only three options). The cost of time is 0 for no time, and each week costs 1 unit of payoff. The more time a student puts in the better his work will be. A student will receive an A for a paper with two weeks of work, a B...

The Red Cross slogan for blood drive is “Blood Saves Lives”. This is true but there...

The Red Cross slogan for blood drive is “Blood Saves Lives”. This is true but there are several hazards that attend blood donation. Current trend is that a patient should be transfused only with the faction of blood that is required such as erythrocytes, platelets, clotting factors etc. Sometimes however, whole blood transfusion is needed. Describe one or two conditions in which blood or only a component of blood is transfused. Explain your answer in the light of what you...

Which of the following crosses best illustrates Mendel's First Law? a. Homozygous cross b. dihybrid cross...

Which of the following crosses best illustrates Mendel's First Law? a. Homozygous cross b. dihybrid cross c. testcross d. monohybrid cross

Demand for copper from the Red Dog mine is steady over time, at p = 1000...

Demand for copper from the Red Dog mine is steady over time, at p = 1000 - q for both this year and next year (where p is the price in dollars per ton and q is the number of tons). Your marginal cost of mining and marketing copper is constant at $100 per ton, and your discount rate is r = 0.05. You can price like a monopolist but your available supply is only S = 600 tons that...

How would you ensure the cross-training was best practice?

1) Aris uses a boat to cross from one side to the other side of a...

1) Aris uses a boat to cross from one side to the other side of a river of width w = 32 m. The river flows at VC = 8 m/min. and he can row at a speed of VB =30 m/min. in still water. He wants to land at a dock which is L=10 m downstream from a point directly opposite his starting point. a) In what direction (i.e. angle relative to the bank), should he aim his boat...

Chip goes into business with two friends (named A and B) from the Honors program after...

Chip goes into business with two friends (named A and B) from the Honors program after graduation. Unfortunately, B is very negligent (e.g. could be harassment, professional malpractice, etc.) and injuries someone in the course of business. Chip was in no way negligent himself. Nonetheless, the injured party can prove $1,000,000 in damages and is now seeking to recover. 1. If Chip, A, and B are operating as a general partnership, how much (a) is Chip liable for (b) is A liable...