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3 years ago

10

PLS ANSWER I DO NOT HAVE A LOT OF TIME ANSWERING THIS IS THE ONLY WAY I CAN PASS

2 answers:

Sedbober [7]3 years ago

5 0

Answer:

the second choice 25x+75.50<525

Ghella [55]3 years ago

3 0

75.50 + 25x < 525

The car can be rented for 17 days.

On the line you will have a lone pointing to the left with an open circle on 17.

75.50 + 25x < 525

25x < 525 - 75.50

25x < 449.50

x < 449.50/25

x < 17.98

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In the game of roulette, a wheel consists of 38 slots numbered 0, 00, 1, 2,..., 36. To play the game, a metal ball is spun a

Oxana [17]

Answer:

$E(X)=-0.0526$

$Sd(X)=5.763$

Step-by-step explanation:

In statistics and probability analysis, the expected value "is calculated by multiplying each of the possible outcomes by the likelihood each outcome will occur and then summing all of those values".

The variance of a random variable Var(X) is the expected value of the squared deviation from the mean of X, E(X).

And the standard deviation of a random variable X is just the square root of the variance.

Let X be a random variable which denotes the money you may win or lose on each spin.

In the game of roulette, a wheel consists of 38 slots. To play the game, a metal ball is spun around the wheel and is allowed to fall into one of the numbered slots. If the number of the slot the ball falls into matches the number you selected, we win $35; otherwise we lose $1. So we have just one possibility to win and 37 of lose on an individual game.

___________________________

X P(X)

___________________________

35 1/38

-1 37/38

___________________________

In order to calculate the expected value we can use the following formula:

$E(X)=\sum_{i=1}^n X_i P(X_i)$

And if we use the values obtained we got:

$E(X)=(35)*(\frac{1}{38})+(-1)(\frac{37}{38})=-0.0526$

In order to find the standard deviation we need to find first the second moment, given by :

$E(X^2)=\sum_{i=1}^n X^2_i P(X_i)$

And using the formula we got:

$E(X^2)=(35^2)*(\frac{1}{38})+((-1)^2)(\frac{37}{38})=33.211$

Then we can find the variance with the following formula:

$Var(X)=E(X^2)-[E(X)]^2 =33.211-(-0.0526)^2 =33.208$

And then the standard deviation would be given by:

$Sd(X)=\sqrt{Var(X)}=\sqrt{33.208}=5.763$

4 0

3 years ago

A Statistics class has an enrollment of 300. Out of these, 95 are taking the Actuarial Statistics major, 120 are Data Science ma

AfilCa [17]

Answer:

0.2833 = 28.33% probability that a student in the class chosen at random is neither an Actuarial Statistics nor a Data Science major

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

In this question, we have that:

There are 300 students.

80 + 5 = 85 are not Actuarial statistics or data science majors. So

$\frac{85}{300} = 0.2833$

0.2833 = 28.33% probability that a student in the class chosen at random is neither an Actuarial Statistics nor a Data Science major

4 0

3 years ago

What is the expanded form for 114,006

____ [38]

In expanded form, the answer would look like this:

100,000 + 10,000 + 4,000 + 6

3 0

3 years ago

Read 2 more answers

1 Mrs. Castro has 100 spoon and 80 forks if she put them in buckets what is the biggest number of spoon or forks that bucket wil

Yuri [45]

Answer:

10

Step-by-step explanation:

Here, we want to get the biggest number of spoon or forks that the bucket will have

What we have to do here is to simply find the greatest common factor of 100 and 80

Finding the greatest common factor of both will

give the biggest number of spoon or forks that the bucket will have

Mathematically, the greatest common factor of 80 and 100 is 10

3 0

3 years ago

Rachel was playing a game on her computer out of 20 questions she answered 7 correctly at this rate how many questions should ra

Zanzabum

Answer:

56

Step-by-step explanation:

(7/20)=(x/160)

160(7/20)=x

x=56

6 0

3 years ago