Mathematics College

If random variable X has a binomial distribution with n=15 and P(success) =p= 0.6, find the mean of X. That is, find E(X). Round to the whole number. Do not use decimals. Answer:

Answers

Answer 1

Answer:

Step-by-step explanation:

E(X) = np

E(X) = (15) (0.6)

E(X) = 9

Answer 2

The mean of the X is 9.

What is the mean of the binomial distribution?

The mean of a binomial distribution is the expected value (long-run average) of the number of successes in the given number of trials.

Formula for calculating mean of binomial distribution

[tex]\mu_{x} = n.p[/tex]

where,

[tex]\mu_{x}[/tex] is the mean of the binomial distribution

n is the number of trials

and, p is the probability of success

According to the given question.

We have

Number of trials, n = 15

Probability of success, p = 0.6

Therefore, the mean of X is given by

[tex]E(X) = 15(0.6)[/tex]

⇒ [tex]E(X) = 9[/tex]

Hence, the mean of the X is 9.

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Related Questions

help meeee Simplify 7(A - 6).

Answers

Answer:
7A-42

Explanation;
Use the distributive property and multiply A and -6 by 7.

I hope this helps!

Answer:

[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{7A - 42}}}}}[/tex]

Step-by-step explanation:

[tex] \sf{7(A \: - 6)}[/tex]

Distribute 7 through the parentheses

[tex] \longmapsto{ \sf{7 \: ∗ \: A \: - 7 \: ∗ \: 6}}[/tex]

[tex] \longmapsto{ \sf{7A \: - 42}}[/tex]

Hope I helped!

Best regards ! :D

~TheAnimeGirl

is negative 73 a natural number

Answers

No.

Negative numbers are not natural numbers.

Natural numbers are positive whole numbers.

1, 2, 3.... and so on.

Step-by-step explanation:

Hey there!!

(-73) is not a natural number.

The reason is natural number always starts from 1 and ends at infinity. But as the given number is -73 it is below 1. So, it's not a natural number.

Hope it helps...

what is the capital of poland?

Answers

Answer:

Warsaw is capital of poland

Answer:

Warszawa

Step-by-step explanation:

What is the sum of the first 10 even multiples of 8?

Answers

the first 10 multiples of 8 are 8,16,24,32,40,48,56,64,72 and 80.

all of those numbers add up to the sum of 440

440 is ur answer :)

Tyler is paid time and a lovertime after 40 hours worked in a week. His hourly rate is $13/h. What is his
gross pay if he worked 48.5 hours last week?

Answers

Answer:

$630.50

Step-by-step explanation:

You work at a sporting goods store and make commissions on the products you
help sell. If you earn a 5.5% commission on all regular priced items, and a 4.5%
commission on all items on sale, how much do you earn in a week where you sell
$8,800 worth of regular goods, and $10,650 worth of items that are on sale?

Answers

Answer:

963.25

Step-by-step explanation:

8,800x0.055=484

10,650x0.045=479.25

484+479.25=963.25

What's 2|–9| – |–2|? Question 10 options: A) 20 B) –18 C) 16 D) –20

Answers

Answer:

Step-by-step explanation:

I think it would be 16
2 x -9 =-18 and which the absolute value sign would make it positive 18 then 18 - the absolute value of -2. 18-2= 16

not sure if that is the answer tho

tristan bought an orange that weighs 1 8th of a pound

Answers

Answer

Tristan bought an orange that weighs 1 8th of a pound. 1. See answer. Add answer. Log in to add comment.

Simplify the radical /1829.

Answers

Answer:

Step-by-step explanation:

PLEASE HELP!

What percent of the circle is shaded?
Can you also explain how to get the answer?

Answers

Answer:

40%

Step-by-step explanation:

1/5 = 20%

then 2/5 would equal 40%

Answer:

40%

Step-by-step explanation:

It is 40 because if you move the two shaded then its two and if you fill in the rest you will need three more.

A _______________________ is a conclusion after you have observed the patterns.

Answers

Answer:

Inductive Reasoning is the process of arriving at a general conclusion based on observations of specific examples. When you try to find the pattern for a list of numbers or visuals, you are using inductive reasoning.

i believe it is inductive reasoning based on me googling it- it may be wrong but

Please complete the venn diagram and list how many elements are in each region thanks :)

Answers

Answer:

Step-by-step explanation:

Region I = n(A) - n(A union B) - n(A uniton C) + region V

= 24 - 10 - 15 + 6

= 5

Round the following to three decimal places.
: A. 1.4366 B. 0.8792
C. 0.3455

Answers

Answer:

1.4370.8790.346

Step-by-step explanation:

A. 1.4366 = 1.437

B. 0.8792 = 0.879

C. 0.3455 = 0.346

[tex]0.1\:1\:1\:1\\0\:. 1\:2\:3\:4\:decimal \:place[/tex]

Note ;

(0 to 4 ); round down (0 to 5); round up

what the simplify form for –3(x + 3) + 4x

Answers

Answer:

x - 9

Step-by-step explanation:

First, distribute:

-3x - 9 + 4x

Then, simplify (add up x):

x - 9

And we're done ^^

Answer:

-3x -9 +4x

-3x + 4x - 9

x - 9

The answer is x - 9

you multiply -3 by x - 3

And there you go .

A man’s age today is three years less than four times the age of his oldest daughter,Let a represent the daughters age.Write an equation to match the scenario.

Answers

The mans age(x)=(4•a)-3

Value of the expression when n=3
-2n(5+n-8-3n)

Answers

Answer:

Step-by-step explanation:

Substitute n into the equation:

-2(3)[5+3-8-3(3)]

-6[-9]

+54

I am genuinely so confused please help

Answers

Answer:

I hope it will help you :)

When considering different sampling methods, cluster sampling includes the steps: _______.
a. use simple random sampling to select a set of groups; every individual in the chosen groups is included in the sample
b. list the members of the population; use simple random sampling to select a starting point in the population; let k = (number of individuals in the population)/(number of individuals needed in the sample); choose every kth individual in the list
c. starting with the one that was randomly selected
d. divide the population into groups; use simple random sampling to identify a proportionate number of individuals from each group
e. identify individuals of the population that are easily accessible; obtain data from these individuals

Answers

Answer:

d. divide the population into groups; use simple random sampling to identify a proportionate number of individuals from each group

Step-by-step explanation:

Remember, a cluster represents a selection out of a group belonging to a larger population. Thus, cluster sampling includes the steps;

divide the population into groups;use simple random sampling to identify a proportionate number of individuals from each group.

For example, A bus company wants to survey all its customers for a particular day, using cluster sampling, they will randomly select 10 trips that day and survey some or all the passengers on those trips.

Answer:

Step-by-step explanation:

4. Rewrite the expression using the distributive property.
(7•3) + (7•7)

Answers

(7•7)+(7•7)

We can use the formula of distributive property
a(b+c)=ab+ac
So it will look like a(b+c)= (7•7)+(7•3)
A is 7, B is also 7, and C is 3. Plug those in and you get 7(7+3)

Answer: 7(7+3)

Hope this helps ʕ•ᴥ•ʔ

simplify: 6 + √27 / 3

Answers

Answer:

6 + √27 / 3

6+ (3√3/3)

6+√3

Step-by-step explanation:

Answer:

Step-by-step explanation:

So, the first step if simplifying the square root. Since 27/3 is equal to 9, you now have to take the square root of 9.

6+[tex]\sqrt{27/3}[/tex]=?

Since 27/3 is equal to 9, you now have to take the square root of 9.

6+[tex]\sqrt{9}[/tex]=?

The square root of 9 is 3.

So, you end up with this:

6+3=12

Describe the shape of the distribution shown on the dot plot.

The dot plot displays the golf scores from a golf tournament.

132 , 134, 136, 138, 148
(Golf Score Strokes)

A. Uniform
B. Bimodal
C. Left Skewed
D. Right Skewed
E. Symmetrical
F. Bell shaped

Answers

Answer:

Then it's probably D. Right-Skewed

In which table does y vary directly with x

Answers

Answer:

No. C

Step-by-step explanation:

please mark me brainleast

Table C shows the proportional relationship between x and y that y varies directly with x option (C) is correct.

What is a proportional relationship?

It is defined as the relationship between two variables when the first variable increases, the second variable also increases according to the constant factor.

We have:

y vary directly with x

y ∝ x

y = kx

k is the constant.

k = y/x

Checking table A:

k = -2/1 = -4/2 ≠ -16/3

Checking table B:

k = -5/1 ≠ 18/2 = 41/3

Checking table C:

k = 26/1 = 52/2 = 78/3 = 26

Thus, table C shows the proportional relationship between x and y that y varies directly with x option (C) is correct.

Learn more about the proportional here:

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.....................

Answers

Uhhhh not sure if you just added dots or I can’t see the question maybe try posting it again.

(57 + 4) x 4 - 16 I need this for my math test

Answers

Answer:

228

Step-by-step explanation:

(57 + 4) * 4 - 16

61 * 4 - 16( To get 61 solve the ones in brackets first)

244 - 16( Solve the multiplication to get 244 _ 61 * 4=244)

228 ( Then solve the subtraction - 244-16= 228)

SO THE ANSWER IS 228.

YOU JUST NEED TO FOLLOW BODMAS.

HOPE IT HELPED

find the distance between points J(13,2) and K(7,10)

Answers

Answer:

Step-by-step explanation:

√(13 – 7)^2 + (2 – 10)^2

√(6)^2 + (-8)^2

√36 + 64

√100

Write an equation for the cubic polynomial
function shown.
To find the equation of the function, first find the
of the graph.

Answers

Answer:

Step-by-step explanation:

It is zeroes

Answer to 1st question: Zeroes

Answer to 2nd question: 2 3 5

12a - 6 + 7a - 2a ; a = 4
Need help please

Answers

Answer:

Step-by-step explanation:

Plug in the value of a in the equation:

12(4) - 6 + 7(4) - 2(4)

Solve 12(4) - 6:

12(4) - 6 = 48 - 6 = 42

Solve 7(4) - 2(4):

7(4) - 2(4) = 28 - 8 = 20

Combine both answers (42+20):

42+20 = 62

Complete answer:

12(4) - 6 + 7(4) - 2(4) = 62

For Mindy's party, she bought 26.4 pounds of meat to make tacos. The night before, she split the meat evenly into 4 containers so it would fit into the refrigerator. How many pounds of meat are in each container?

Answers

Answer:

Step-by-step explanation:6x4.3

A rate of 5 yards per second is equal to how many yards per minute?

Answers

Answer:

300 yards per minute

Step-by-step explanation:

60 seconds in a minute 5 yards per second

5x60=300 yards per minute

Margo baked 120 cookies for the school big sale 84 of the cookies were chocolate chip what portion of the cookies were chocolate chip select the three correct answers a 42/60 B 84% C7/10 D 0.70 E 0.84

Answers

D

Explanation:
120*0.70
84

So, 70 percent of 120 is 84. Which means the chocolate chip cookies are 70% (0.70) of the cookies in all.

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