On any given test, there is a 41% chance that a student will get a B or better. A teacher randomly selects tests until there is a B or better. Assume the selections are independent. What is the probability that it will take exactly 4 selections to get a B or better? What is the probability that it will take more than 3 selections to get a B or better?

Answers

Answer 1

Explanation:

Probability of exactly 4 selections

= (100% - 41%)³(41%) = 8.42%.

Probabiluty of more than 3 selections

= (100% - 41%)³ = 20.54%.


Related Questions

PLEASE PLEASE PLEASE!!! NEED HELP FAST!!! 100 Points!!! REAL ANSWER!!!

Calculate the return on investment in dollars and as a percentage for an investment that you purchase for $500 and sell for $600. TIP: if you dont remember how to calculate return on investment, review the Calculating ROI pages in Section 4, Lesson 2.

Answers

Answer:

if you bought it for 500 you should probably sell it for a little less if you and calculate how much you invested is 100

Answer:

if you bought it for 500 you should probably sell it for a little less if you and calculate how much you invested is 100

Explanation:

which interactions are not involved in the formation of a protein’s tertiary structure?


a. salt bridges

b. disulfide bonds

c. van der Waals interactions

d. hydrogen bonds

e. peptide bonds

Answers

The answer is A salt bridge

How does the role of the Mexican legislature compare to the Russian legislature?

Answers

Answer:

ewn ko po tanungin nyo po sa mama mong blue

Explanation:

sorrypo hope this help i just want points

Is there someone not mentioned in the story who may also bear responsibility for Kim's failing grade

Answers

I wish I could tell you but I am not that smart

bakit marami sa mga pilipino ang na akit pumasok sa paaralan​

Answers

Answer:

DAHIL GUSTO NILANG MATUTONG MAG BASA AT MAGSULAT . DAHIL MARAMI DIN SA MGA PILIPINONG GUSTONG MAKAPAGTAPOS AT MATUPAD ANG MGA PANGARAP NILA PARA SA KANILANG PAMILYA.

Which game most represents a wave?

hide and seek
tic-tac-toe
poker
tipping over dominoes

Answers

tipping over dominoes obviously

The tipping over dominoes game most represents a wave. Thus, option D is correct.

What is a wave?

An alteration or disruption that causes energy to be transferred gradually from one point to another in a medium; it may involve an elastic deformation or a change.

The game Tipping Over Dominoes most likely represents a wave. This game involves lining up the dominoes in sequence and pushes the starter. This will cause a delightful cascade of dominoes to fall across the push-up site to the final domino.

Every domino goes down with the wave's direction in mind. The wave of sound is a better physical illustration. The changes in the position of the dominoes as they fall have both horizontal as well as vertical elements.

Therefore, option D is correct.

Learn more about Wave, here:

https://brainly.com/question/29334933

#SPJ5

is the process of developing structures or organs for animals to survive​

Answers

Answer:

Protection

Explanation:

A company makes paper labels for paint cans. As shown below, each can is in the shape of a cylinder with a height of 9in and a diameter of 8in. The paper label is wrapped around the can and covers only the side of the can (not the top or bottom). If the company makes 15 labels, how many square inches of paper will be needed? Use 3.14 for π, and do not round your answer.

Answers

Answer:

Answer: 4,772.8 cm2

Explanation:

The company will need 3,583.2 square inches of paper to make 15 labels.

What is cylinder?

Traditionally, a cylinder was a three-dimensional solid, one of the most fundamental curvilinear geometric shapes. It is a prism with a circle as its base in elementary geometry.

The formula for circumference is:

Circumference = π × diameter

Circumference = 3.14 × 8in

Circumference = 25.12in

So the label will need to be 25.12 inches long.

The height of the label will be the same as the height of the can, which is 9 inches.

To find the total area of the paper needed for 15 labels, we need to multiply the length of each label by its height and then multiply that by the number of labels:

Total area = length × height × number of labels

Total area = 25.12in × 9in × 15

Total area = 3,583.2 square inches

Thus, the answer is 3,583.2 square inches.

For more details regarding cylinder, visit:

https://brainly.com/question/16134180

#SPJ2

The table below shows the population growth rates for three countries in 2009:

Answers

I don’t see anything I’m sorry


Biomagnification ____
a.causes a 90% loss of synergy higher on the food chain
b. is caused by the ecological succession from a disturbed area to a climax community
c. is introduced into an ecosystem through nonpoint pollution sources
d. happens when an increased concentration of a substance accumulates in body tissues
e. is the transportation of pollution from one ecosystem to another

Answers

Answer:

Causes of Biomagnification. The release of toxic chemicals and pollutants into the environments such as the seas, air, and land results in the accumulation of toxins and harmful substances in the environment.

Explanation:

Answer:

D) happens when an increased concentration of a substance accumulates in body tissues.

Explanation:

Which of the following is produced when sugar is processed in an animal cell

Answers

Answer:

Carbon dioxide

Explanation:

Glycolysis which is the breakdown of sugar in living things, is a metabolic process that helps to release energy. Pyruvate is a product of this process that involves ten steps. After glycolysis has occurred, pyruvate is moved to the cellular powerhouse (the mitochondria) in the presence of oxygen.

There, carbon dioxide is extracted from pyruvate and acetyl coenzyme A is generated. This shows that carbon dioxide is produced when sugar is processed in animal cells.

The vapor pressure of ethanol is 54.68 mm Hg at 25°C.
How many grams of chlorophyll, C55H72MgN4O5, a nonvolatile, nonelectrolyte (MW = 893.5 g/mol), must be added to
174.9 grams of ethanol to reduce the vapor pressure to 53.25 mm Hg ?
ethanol = CH3CH2OH = 46.07 g/mol.
___g chlorophyll?

Answers

Answer:

88.19 g

Explanation:

From Raoult's law;

P° - P/P° = XB

XB = mole fraction of solute = number of moles of solute(n)/number of moles of solute(n) + number of moles of solvent (N)

But N>>n

So,

XB = number of moles of solute/number of moles of solvent

Number of moles of solute = mass of solute (WB)/molar mass of solute (MB)

number of moles of solvent = mass of solvent (WA)/molar mass of solvent (MA)

Hence;

P° - P/P° = WB/MB * MA/WA

WB = (P° - P/P°) (MB * WA/MA)

Substituting values;

WB = (54.68 - 53.25/54.68) * (893.5 * 174.9/46.07)

WB = 88.19 g

can anybody figure out why its like this

Answers

Answer:

Probably a computer bug.

Explanation:

Answer:

your system is just bugged your WiFi or connection may be to blame refresh until it works properly

Other Questions
Which statement best describes how an electromagnetic motor works? Electrons are moved through a magnet, creating a current. That current interacts with a circuit, moving theconductor in the orientation of the fieldElectrons are moved through a current, creating a circuit That circuit interacts with a magnet, moving theconductor in the orientation of the field.Electrons are moved through a circuit, creating a current That current interacts with a magnet, moving theconductor in the orientation of the fieldElectrons are moved through a magnet, creating a circuit That circuit interacts with a current, moving theconductor in the orientation of the field Helpp Ill mark you brainlist Select the correct answer. Which genre of art is most likely described in the following sentence? En este cuadro que tiene facetas abstractas, el artista ha experimentado mucho con los tonos y los colores. A el arte impresionista B. el arte clsico C. el arte moderno D. el arte renacentista Textra Plastics produces parts for a variety of small machine manufacturers. Most products go through two operations, molding and trimming, before they are ready for packaging. Expected costs and activities for the molding department and for the trimming department for this year follow. Molding Trimming Direct labor hours 52,000 DLH 48,000 DLH Machine hours 30,500 MH 3,600 MH Overhead costs $ 730,000 $ 590,000 Data for two special-order parts to be manufactured by the company in this year follow. Part A27C Part X82B Number of units 9,800 units 54,500 units Machine hours Molding 5,100 MH 1,020 MH Trimming 2,600 MH 650 MH Direct labor hours Molding 5,500 DLH 2,150 DLH Trimming 700 DLH 3,500 DLH Required: 1. Compute the plantwide overhead rate using direct labor hours as the base. 2. Determine the overhead cost assigned to each product line using the plantwide rate computed in requirement 1. How long is radioactive waste from nuclear plants radioactive?a-100 yearsb-10,000 yearsc-100,000 yearsd-1,000 years how do you find the x-intercept and y-intercept of an exponential function by looking at a graph The wire A and B are made of copper. Both wwires are inlong but wire A is 1mm thick and wire B is 2mm thick, thespecific resistance isa) more than Ab) more than Bc) same for bothd) cannot compared Lauren makes an art piece using the densities of various liquids to create layers of colors. She first determines the density of each liquid. Then she pours them into a glass container and watches them separate into layers. Draw the graph of the equation x y = 4Answer the following using graph paper:(i) Find the value of y, if x = 7 from the graph.(ii) Write the coordinate of the point where the graph intersect on x axis. Find the range of the data in the box plot below.cokiesNumber of cookies eatenby each contestant At the zoo 1/9 of the park is set aside for the monkeys. There are 4 different monkeys, each with an equal-sized area. What fraction of the zoo is set aside for the one monkey area? A block of lead has dimensions of 4.50 cm by 5.20 cm by 6.00 cm. The block weighs 1587 g. From this information, calculate the density of lead. Pls help me if your good at science Ill mark brainliest Susan incorrectly factored the expression below. (the top one is the original and the bottom is her factoring it) The question is on the left a ball is rolled of the edge of a table with ahorizontal relocity of 10 m/s .What will be the ball'svelocity 0.10s later? please help me!!!!!!! i really need help with this! A thunderstorm travels at a constant speed. In 15 minutes , the storm travels 12 miles. If the storm continues to travel at the same rate, how far would it travel in 90 minutes? uHhH sHe mEaNt 'diseases', Idrk what to say to put it in words, can someone help c': Help need help please!!