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tino4ka555 [31]
3 years ago
15

Find the probability of having 2,3 or 4 successes in five trials of a binomial experiment in which the probability of success is

40% Round to the nearest tenth of a percent

Mathematics
1 answer:
dexar [7]3 years ago
6 0

Answer:

65.3%.

Step-by-step explanation:

The general formula is:

nCr p^r (1 - p)^(n-r)    where n = number of trials, p =probability of success on one trial , r = the given number of successes

So for 2, 3 or 4 success ;

probability = 5C2 (0.4)^2 (0.60)^(5-2) + 5C3 (0.4)^3 (0.60)^(5-3)

                      +  5C4 (0.4)^4 (0.60)^(5-4)

= 0.3456 + 0.2304 + 0.0768

= 0.6528.

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Which best describes the strength of the model? a weak positive correlation a strong positive correlation a weak negative correl
Akimi4 [234]

Correlation coefficient helps us to know how strong is the relation between two variables. The strength of the model is a strong positive correlation.

<h3>What is the correlation coefficient?</h3>

The correlation coefficient helps us to know how strong is the relation between two variables. Its value is always between +1 to -1, where, the numerical value shows how strong is the relation between them and, the '+' or '-' sign shows whether the relationship is positive or negative.

  • 1 indicates a strong positive relationship.
  • -1 indicates a strong negative relationship.
  • A result of zero indicates no relationship at all, therefore, independent variable.

Hence, the strength of the model is a strong positive correlation.

Learn more about Correlation Coefficients:

brainly.com/question/15353989

3 0
3 years ago
Find the area of the parallelogram
jekas [21]

Answer:

120 cm^2

Step-by-step explanation:

The area of the parallelogram is

A = bh

A = 15*8

A =120

3 0
3 years ago
Find the total surface area of the cubic box below
Alik [6]
The answer is 24 square feet.

sa =surface \: area
sa  \:  \:  \: {of cube}= l \times w \times 6
l = 2 \: ft \\  w = 2ft
l \times w = 4
2 \times 2 = 4
(l \times w) \times 6
(2 \times 2) \times 6
(4) \times 6

= 24 \: square \:  \: feet

5 0
3 years ago
Read 2 more answers
Henry is being paid $11.25 an hour at his job before he pays taxes. However, 28% is subtracted from his wages earned for taxes.
vekshin1
Hi, Kaylasole99! :)

11.25*28%
=$3.15

11.25-3.15
=$8.10

With taxes deducted, Henry makes $8.10 an hour.

To find how many hours he needs to work to make $324, we can create an equation:
8.10x=324
x=hours

Solve for x.
8.10x=324
Divide both sides by 8.10.
(8.10x)/8.10=(324)/8.10
Simplify.
x=40

It would take Henry 40 hours in order to make $324.

Hope this helps.
-Benjamin
6 0
4 years ago
Rafael takes home $4200 per month. What is the maximum amount he can
galben [10]

Answer:

A bad debt ratio of more than 10% is considered high and often is a sign that you are in danger of credit overload. So, I'd $420 is the maximum amount he can spend on credit card payments and loan each month.

Step-by-step explanation:

Let's clear this with an example:

Rafael makes $4,200 a month and let's say he spends $550 on credit card payments and $450 on an loans.

Then, the ratio calculation would be $1000 / $4,200 = 0.24

Multiply that by 100 for a debt-income-ratio of 24%.

In this example, Rafael spends almost a quarter of his income on debt which is considered bad debt in economics.

6 0
3 years ago
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