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Basile [38]
3 years ago
9

If there are 19 questions and each question has 4 answers, what is the probability she will answer at least one question correct

ly?
Mathematics
1 answer:
gregori [183]3 years ago
7 0

Answer:

0.9958

Step-by-step explanation:

P(being correct) = 1/4 = 0.25

Hence, p = 0.25

n = 19

P(x ≥ 1) = p(x = 1) + p(x = 2) +... + p(x = 19)

Using the binomial probability formula :

P(x =x) = nCx * p^x * (1 - p)^(n - x)

However, to save computation time, we could use a calculator :

Using a calculator,

P(x ≥ 1) = 0.99577

P(x ≥ 1) = 0.9958

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Desreumaux Inc's stock has an expected return of 12.25%, a beta of 1.25, and is in equilibrium. If the risk-free rate is 5.00%,
zhenek [66]

Answer:

MRP=\frac{12.25\% -5.00\%}{1.25}=5.8 \%

Step-by-step explanation:

Previous concepts

The Capital Asset Pricing Model (CAPM) is a concept that "analyze the relationship between risk  of any type and the definition of expected return  about the assets".

By definition the Market risk premium is defined as "the difference between the average return and the return on a risk-free".

The value of  \beta represent an adimensional number that allows to measure if we create more/low risk on any investment.  

Solution to the problem

Assuming that we can use the capital asset pricing model we can calculate the market risk premium (MRP) with the following formula:

MRP= \frac{ER -RFR}{\beta}

Where:

ER= Expected return = 12.25 %

RFR= Risk free rate= 5.00%

\beta = 1.25

So then if we replace we got:

MRP= \frac{12.25\% -5.00\%}{1.25}=5.8 \%

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3 years ago
Doess odd squad seem like a baby show now
Alenkinab [10]
Yeah......yeah it does
7 0
3 years ago
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Fully Factorise 3x-12
artcher [175]

Answer:

3(x-4)

Step-by-step explanation:

3×4=12 and 3 also goes into 3x

7 0
3 years ago
A chemist recorded the change in temperature of a cooling liquid as −25.5°F over a 1.5 minute period. The temperature fell at a
Strike441 [17]

The rate of change in temperature is −17°F/min

<h3>Rate of change of a function</h3>

The formula for calculating the rate of change of a function is expressed as:

Rate of change = rise/run

This is also known as the slope of the function

Given the following parameters

Temperature = −25.5°F

Cooling time = 1.5mins

Determine the rate of change

Rate = −25.5°F/1.5min

Rate = −17°F/min

Hence the rate of change in temperature is −17°F/min

Learn more on rate of change here: brainly.com/question/8728504

#SPJ1

5 0
2 years ago
2/3 greater than or less than 1/5
UkoKoshka [18]
2/3 is greater. 1/5 is less.
4 0
3 years ago
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