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maxonik [38]
3 years ago
7

A bag contains 17 cards numbered 1 through 17 . a card is randomly chosen from the bag. what is the probability that the card ha

s an even number on it? write your answer as a fraction in simplest form.
Mathematics
2 answers:
SVETLANKA909090 [29]3 years ago
7 0

Probability of choosing a card that has an even number on it = \frac{8}{17}

<em><u>Explanation </u></em>

<u>Cards:</u> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

There are total 17 cards and we are choosing only one card randomly which has even number on it.

<em>The even number cards are: </em>2 4 6 8 10 12 14 16

That means there are total 8 even number cards.

So, Probability of choosing a card that has an even number on it = \frac{8}{17}

Strike441 [17]3 years ago
6 0
Solution:

Even number:
2, 4, 6, 8, 10, 12, 14, 16
TOTAL: 8

Therefore,
Probability = 8/17
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A veterinarian collects data on the number of times race horses are raced during their careers. The veterinarian finds that the
SpyIntel [72]

Answer:

c. (12.12, 18.48)

Step-by-step explanation:

Hello!

The study variable is X: number of times a racehorse is raced during its career.

The average number is X[bar]= 15.3 and the standard deviation is S= 6.8 obtained from a sample of n=20 horses.

To estimate the population mean you need that the variable has a normal distribution, in this case, we have no information about its distribution so I'll assume that it has a normal distribution. With n=20 the most accurate statistic to use for the estimation is a Students-t for one sample, the formula for the interval is:

X[bar] ± t_{n-1;1-\alpha /2} * \frac{S}{\sqrt{20} }

t_{n-1;1-\alpha /2} = t_{19;0.975}= 2.093

[15.3 ± 2.093 * \frac{6.8}{\sqrt{20} }]

[12.12; 18.48]

Using a significance level of 95% you'd expect that the true average of times racehorses are raced during their career is included in the interval [12.12; 18.48].

I hope it helps!

8 0
4 years ago
Can someone help please
marysya [2.9K]

I would say B. The mean is a good measure of central tendency.

I hope this helps!


6 0
3 years ago
At a sale, books are sold at $90.75 each, which is 75 percent of the original price. What is the original price
lions [1.4K]

\frac{75}{100}  =  \frac{90.75}{x}  \\ x = \frac{90.75 \times 100}{75}  =  \frac{9075}{75}   = 121
the answer is 121
6 0
3 years ago
Round the answer to the nearest hundredth.
aniked [119]
Answer is 5.85 see picture

5 0
3 years ago
What is the measurement of theta in degrees?
Olin [163]

Hello from MrBillDoesMath!

Answer:  48.2 degrees

Discussion:

In the diagram, "6" is the x- distance along the side adjacent to theta, and  

3 * sqrt(5) is the y-distance along the side opposite angle theta.

By definition of tangent of angle, using "@" for theta, we have

tan (@)        =  opposite/adjacent = 3 * sqrt(5) / 6  = sqrt(5)/2


So @ = (inverse tangent (sqrt(5)/2) )  =  48.189 degrees (approximately)

             

Thank you,

MrB

7 0
3 years ago
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