subject

Mathematics, 04.11.2020 04:00 tristanart5749

1. The American Red Cross says that about 15% of the U. S. population has Type B blood. A blood drive is being held at your school. a) What is the probability that exactly 3 of the first 20 blood donors have Type B blood? ( hint. Binomial) ( 2 Marks)
b) What is the probability the 8th Bloor donor is the first donor with type B blood type.
( hint: Geometric) ( 2 Marks)

ansver

Answers: 1

Show answers

Another question on Mathematics

question

Mathematics, 21.06.2019 16:00

What is the value of x in the diagram below?

Answers: 2

question

Mathematics, 21.06.2019 17:00

Convert 2000 swiss francs to dutch guilders

Answers: 1

question

Mathematics, 21.06.2019 17:00

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

Answers: 1

question

Mathematics, 21.06.2019 19:00

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?

Answers: 1

You know the right answer?

1. The American Red Cross says that about 15% of the U. S. population has Type B blood. A blood driv...

Questions

question

Health, 24.02.2020 23:22

Mytal has been diagnosed with unipolar depression. Most days, he cannot even get out of bed. On the days that he does manage to leave the house and go...

question

Computers and Technology, 24.02.2020 23:22

In the well-known attack, an attacker monitors (or sniffs) packets from the network, modifies them, and inserts them back into the network....

question

Social Studies, 24.02.2020 23:22

A interaction requires more time because a relationship has to be developed, and trust and friendship must be established. Question 41 options: a) pe...

question

Mathematics, 24.02.2020 23:22

If $10,000 is invested at 2 percent semi-annually for 5 years, what is the amount at the end of the term?...

question

Mathematics, 24.02.2020 23:22

3.4 - 2.8d + 2.8d - 1.8...

question

Mathematics, 24.02.2020 23:22

After buying some new coins, Andre has 80 coins in his collection. Last month, he had 50 coins. The size of his current collection is what percentage...

question

English, 24.02.2020 23:22

I nosed out, in my childish games, every last shark-toothed chamber and hall, every black tentacle of my mother's cave, and so came at las...

question

Mathematics, 24.02.2020 23:22

A motorboat starts from rest (initial velocity v(0)=v0=0 ft/s. Its motor provides a constant acceleration of 4 ft/s2 but water resistance causes a dec...

question

Engineering, 24.02.2020 23:22

Nitrogen at an initial state of 420 K, 116 kPa, and 3 m3 is compressed slowly in an isothermal process to a final pressure of 455 kPa. Determine the w...

question

Engineering, 24.02.2020 23:22

In problem 3, the queue did not completely clear after 30 second or after green signal was on. It took some time to discharge all the queue (queue dis...

question

Business, 24.02.2020 23:22

Assume Purity Ice Cream Company, Inc., in Ithaca, NY, bought a new ice cream production kit (pasteurizer/homogenizer, cooler, aging vat, freezer, and...

question

Computers and Technology, 24.02.2020 23:22

Write an expression that will cause the following code to print "18 or less" if the value of user_age is 18 or less. Write only the expression. Sample...

question

Physics, 24.02.2020 23:22

A low resistance light bulb and a high resistance light bulb are connected in parallel with each other. Which bulb is brighter if the parallel combina...

question

Physics, 24.02.2020 23:22

Currents of approximately 0.06 A can be potentially fatal. Currents in that range canmake the heart fibrillate (beat in an uncontrolled manner). The r...

question

History, 24.02.2020 23:23

Which are the ways American farming changed in the late 1800s? Choose all answers that are correct. new equipment for farming...

question

Physics, 24.02.2020 23:23

Suppose you want to use this human engine to lift a 2.35 kg box from the floor to a tabletop 1.30 m above the floor. How much must you increase the gr...

question

English, 24.02.2020 23:23

PLZ HELP.. Need this done as soon as possible,3.17 Literary AnalysisCry, The Beloved CountryBy Alan Paton...

question

Mathematics, 24.02.2020 23:23

How can you generate x-3y+5 from the expression x+y+4+2y+1...

question

Physics, 24.02.2020 23:23

Two known forces F1 = 3.75 N at 73.0° below the positive x-axis and F2 = 3.55 N at 33.0° above the negative x-axis are acting on an object. What is th...

question

Business, 24.02.2020 23:23

Issued a directive that "Absolutely no food or drink are allowed in the library." She issued this directive because several computers and keyboards in...

More questions: Mathematics Another questions

Questions on the website: 13722363