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Dahasolnce [82]
4 years ago
11

A box is filled with 9 blue cards, 4 green cards, and 3 yellow cards. A card is chosen at random from the box. What is the proba

bility that it is a blue or a yellow card? Write answer as a fraction.
Mathematics
2 answers:
VLD [36.1K]4 years ago
6 0
12/16 which would reduce to 6/8 which can also reduce further to 3/4! :) so the final answer is 3/4.
sp2606 [1]4 years ago
4 0
Start by finding the total sum of cards in the box.

9+4+3= 16

Now what we are looking for is how many cards we are looking for to pull (yellow or blue).

9+3 =12

We could pull 12 cards that would be yellow or blue out of a box of 16 cards.

Our answer would be 12/16 simplified to 3/4.
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Anyone who plays or watches sports has heard of the "home field advantage." Teams tend to win more often when they play at home.
AveGali [126]

Answer:

H0 : μ = 0.5

H0 : μ > 0.5

Kindly check explanation

Step-by-step explanation:

H0 : μ = 0.5

H0 : μ > 0.5

We perform a right tailed test :

Sample proportion :

Number of games won, x = 142

Number of games, n = 250

phat = x / n = 142 / 250 = 0.568 = 56.8%

Yes, it is consistent

Test statistic :

(phat - p) * √Phat(1-Phat)/n

1 -Phat = 1 -0.568 = 0.432

(0.568 - 0.5) /√(0.568*0.432)/250

0.068 / 0.0313289

= 2.17

The Pvalue using the z test statistic :

Pvalue = 0.015

α = 0.03

Since ;

Pvalue < α ; We reject the null and conclude that teams tend to win more often when they play at home.

8 0
3 years ago
Your paycheck this week is $138.25. You put the $42.54 in a savings account that pays an interest rate of 6%, compounded yearly.
ASHA 777 [7]
Amount of money you will have = 42.54(1+6/100)^5=56.9
3 0
3 years ago
Please help with this ! will give brainless
irakobra [83]

Answer:

x^13

2n^2x-5n^7

-6x^10-x

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6v^7

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pls mark as brainliest if its right :)

7 0
3 years ago
The question is:
Naddik [55]

Answer:

2.5 gallons of the 20% solution must be replaced by the 36% solution.

Step-by-step explanation:

.12(20 - x) + .36x = 20(.15)

2.4 - .12x + .36x = 3

2.4 - .24x = 3

- .24x =  - .6

.24x = .6

x = 2.5

7 0
2 years ago
If you were to spin a spinner at right what would be the probability of landing on green or purple
AURORKA [14]

depending on how many green and purple there are, lets say 4, and there are 10 other colors, it would be 4/10 so its 40%

5 0
3 years ago
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