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cestrela7
11 days ago
11

15 cards are selected out of a 52 card deck such that after each card is selected, it is placed back into the deck and the deck

is reshuffled. Then the total number of hearts selected follows a binomial distribution.
a) true
b) false
Mathematics
1 answer:
lawyer [12K]11 days ago
7 0

Answer:

The assertion is a) true

Explanation step-by-step:

In a standard deck of 52 cards, there are 13 cards belonging to the heart suit.

Since the cards are returned back to the deck after each selection, every one of the 15 events operates independently and share an identical probability of occurrence. As such, this scenario adheres to a binomial distribution with the following characteristics:Number of trials (n) = 15

Success probability (drawing a heart) = 13/52 = 1/4

Failure probability (not drawing a heart) = 39/52 = 3/4

In conclusion, the statement is true.

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Wyatt is going to a carnival that has games and rides. Each game costs $1.25 and each ride costs $2.75. Wyatt spent $20.25 altog
Inessa [12117]

Answer:

Wyatt participated in 3 games and enjoyed 6 rides

Step-by-step explanation:

Let x represent the number of games

And let y represent the number of rides

Each game costs $1.25

Each ride costs $2.75

The total expenses incurred by Wyatt amounted to $20.25

Thus, the equation becomes: x1.25 + y2.75 = 20.25..... Equation 1

The number of rides he enjoyed is double the games he competed in

Y = 2x... Equation 2

By substituting the value of y into equation 1

x1.25 + y2.75 = 20.25

x1.25 + 2(x)2.75 = 20.25

x1.25 + x5.5 = 20.25

x6.75= 20.25

x= 20.25/6.75

X= 3

Y= 2x

Y= 2(3)

Y= 6

Thus, Wyatt participated in 3 games and enjoyed 6 rides

5 0
24 days ago
Ayesha works as a real estate agent. Her annual gross salary is $28,000. From this, she must pay 20% income tax on anything earn
Zina [11949]

Answer:

Step-by-step explanation:

Annual gross salary = $28000

Income tax = 20% applicable to earnings exceeding $15000

Thus, she has a taxable amount of $5000

Rent loan equals $140 monthly = $140 * 12= $1680 per year

Tax deductible annually would be 20% of $5000

20 / 100 * $5000 = $1000

Her total net income annually is equal to

Gross salary per annum - tax - loan =

($28000 - $1000 - $1680) = $25,320

Ayesha's take-home pay annually is $25,320.

8 0
15 days ago
How does the graph of mc024-1.jpg compare to the graph of the parent function mc024-2.jpg?
babunello [11289]
The question is as follows:
<span>In what ways does the graph of g(x)=1/x-5+2 differ from the graph of the parent function f(x)=1/x?
</span>
=================================================
Solution:
========
The given function ⇒ g(x) = \frac{1}{x-5} +2

The parent function of the provided function ⇒ f(x)= \frac{1}{x}

After graphing both equations, as illustrated in the attached image.
It can be concluded that
<span>g(x) is translated 5 units to the right and 2 units upwards from f(x).
</span>

Thus, the correct answer is option 2
<span />
6 0
1 month ago
Read 2 more answers
For every 10 yards on a football field, there is a boldly marked line labeled with the amount of yards. Each of those lines is p
zzz [11803]

Response:

D. The sidelines are parallel because they are perpendicular to a common line.

Justification:

According to the perpendicular transversal theorem, when a line is perpendicular to one of two parallel lines, it is also perpendicular to the other line. Furthermore, the converse of the theorem states that if two lines are perpendicular to the same line, they must be parallel. Therefore, the sidelines are indeed parallel and also perpendicular to this single line.

4 0
1 month ago
Read 2 more answers
There are 200 students in the 7th grade class at Brookside Middle School. Of these students, 12% play volleyball and 15% play ba
Svet_ta [12230]
P(volleyball and baseball) = 4/200 x 100 = 2%
P(volleyball or baseball) = P(volleyball ∪ baseball) = P(volleyball) + P(baseball) - P(volleyball and baseball) = 12% + 15% - 2% = 25%.

Thus, 25% of students participate in either volleyball or baseball.
4 0
14 days ago
Read 2 more answers
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