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3 years ago

Compare and round decimals

Mathematics

1 answer:

Alexxandr [17]3 years ago

8 0

Answer:

is there a problem to go off of?

Step-by-step explanation:

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On a particular day, 112 of 280 passengers on a particular DTW-LAX flight used the e-ticket check-in kiosk to obtain boarding pa

Sonja [21]

Answer:

0.2348 = 23.48% probability that four will have used the e-ticket check-in kiosk to obtain boarding passes.

Step-by-step explanation:

Hypergeometric distribution:

The probability of x sucesses is given by the following formula:

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

In which:

x is the number of sucesses.

N is the size of the population.

n is the size of the sample.

k is the total number of desired outcomes.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In this question:

Population of 280, which means that $N = 280$

112 use e-ticket check-in kiosk, which means that $k = 112$

Sample of eight passengers means that $n = 8$

Find the approximate hypergeometric probability that four will have used the e-ticket check-in kiosk to obtain boarding passes.

This is P(X = 4). So

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

$P(X = 4) = h(4,280,8,112) = \frac{C_{112,4}*C_{168,4}}{C_{280,4}} = 0.2348$

0.2348 = 23.48% probability that four will have used the e-ticket check-in kiosk to obtain boarding passes.

3 0

3 years ago

NEED HELP ASAP WILL GIVE BRAINLIEST! :)

blagie [28]

Answer:

it adds up to 180 so the missing parts would be whats left.

Step-by-step explanation: 35 +105=( you fill it in)

the numbe you filled in minuse 180

5 0

3 years ago

Choose the kind(s) of symmetry. (Select all that apply.) the letter (D)

k0ka [10]

Answer:Point and line

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

The black figure is an ellipse, and the black line segment is its major axis. What is the length of the blue line segment?

andrezito [222]

The answer is: A. 20.3

The explanation is shown below:

1. By definition, the sum of the length of the strings (The length of the blue segment and the length of the red segment) is equal to the length of the major axis (The black segment).

2. Based on this, you can write the following expression, where $x$ is the length of the blue segment:

$x+10.7=31$

3. Now, you must solve for $x$ , as following:

$x=31-10.7$

$x=20.3$

4. Therefore, the answer is the option A.

6 0

4 years ago

Add 2/3 yards 4/9 yard and 23/36 yard and please show work

natta225 [31]

Answer:

7/4 yard

Step-by-step explanation:

36 is a suitable common denominator for expressing these fractions. All measures are in yards.

2/3 + 4/9 + 23/36 = (12·2)/(12·3) + (4·4)/(4·9) + 23/36

= 24/36 + 16/36 + 23/36

= 63/36 = (9·7)/(9·4)

= 7/4 = 1 3/4 . . . . . yards

3 0

4 years ago