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3 years ago

A pair of dice is rolled. find the probability of each P(Odd sum)

Mathematics

1 answer:

mestny [16]3 years ago

6 0

P(Odd sum) = 1/2 or 50%

For two dice rolls to have an odd sum either the 1st one is even and the 2nd is odd or the 1st one is odd and the 2nd is even.

The chance for the 1st one being even is 1/2, same for 2nd being odd. So the chance that the 1st is even and the 2nd is odd is 1/2 * 1/2 = 1/4. This also applies for the 1st one being odd and the 2nd being even, so the chance that the 1st is odd and the 2nd is even is also 1/4.

So then you add these two probabilities, 1/4 + 1/4 = 1/2 which is the answer.

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Find x, y<br><br> Please try to explain how you did it

BlackZzzverrR [31]

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2 years ago

The monthly amounts spent for food by families of four receiving food stamps approximates a symmetrical, normal distribution. Th

e-lub [12.9K]

Answer:

95% of monthly food expenditures are between $110 and $190.

Step-by-step explanation:

Given : The monthly amounts spent for food by families of four receiving food stamps approximates a symmetrical, normal distribution. The sample mean is $150 and the standard deviation is $20.

To find : Using the Empirical rule, about 95% of the monthly food expenditures are between which of the following two amounts?

Solution :

At 95% of the data is between two standard deviation to left and right of the mean is given by,

To the left side, $\bar{x}-2\sigma$

To the right side, $\bar{x}+2\sigma$

We have given,

The sample mean $\bar{x}=\$150$

The standard deviation $\sigma=\$20$

Substitute in the formula,

$\bar{x}-2\sigma$

$=150-2(20)$

$=150-40$

$=110$

$\bar{x}+2\sigma$

$=150+2(20)$

$=150+40$

$=190$

Therefore, 95% of monthly food expenditures are between $110 and $190.

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3 years ago

Gasoline costs 1.05 euro per liter in France. What is the price in dollars per gallon?

Alecsey [184]

The price in dollars per gallon is 4.02 dollars per gallons.

<h3>How to find the price of gasoline in dollars per gallon?</h3>

Gasoline costs 1.05 euro per litre in France.

The first thing to do is to determine the equivalent amount of the same litre in dollar while in France.

Then, equate it the quantity of litres to gallons.

Hence,

1 euro = 1.01 dollars

1.05 euro = ?

cross multiply

price = 1.05 × 1.01

price = 1.0605 dollars

1 litres = 0.264172 gallons

Therefore,

cost = 1.0605 / 0.264172

cost = 4.01552442257 dollars per gallons

cost = 4.02 dollars per gallons

Therefore, the price in dollars per gallon is 4.02 dollars per gallons.

learn more on price here: brainly.com/question/14501882

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1 year ago

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Korvikt [17]

Answer:

Here is your solution.

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3 years ago

What fractions are in between -1/3 any -2/3

UNO [17]

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3 years ago