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svet-max [94.6K]
2 years ago
5

Please please help me with this question please

Mathematics
1 answer:
slavikrds [6]2 years ago
8 0

Answer:

1. Theoretical probability is the probability or likelihood something will happen based on reasoning and expectations.

3. Experimental probability is the probability that something actually happened based on an experiment being done multiple times.

2.

a) 1/52

b) 0.5

c) 25%

d) 1/6

e) 50%

f) 100%

Step-by-step explanation:

2.

a) There are 52 cards in a deck of cards, and you are pulling one specific card. There is only one 9 of clubs in the deck of 52 cards. 1/52

b) There are only two options for flipping a coin, heads and tails. 1/2 = 0.5

c) 1/4 of the deck of cards are diamonds, and 1/4 = 25/100 = 25%

d) one die has 1, 2, 3, 4, 5, 6 as options. Rolling a 3 is a 1 out of 6 chance = 1/6

e) Again, our options are 1, 2, 3, 4, 5, 6. Of those, 2, 4, 6 are even. 3 out of 6 chance it is even. 3/6 = 1/2 = 0.5

f) There are only two options, heads or tails. Landing on either heads or tails is guaranteed...so 100%

Please let me know if you have questions.

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Write an equation to represent the following statement 29 is 6 more than K solve for K<br><br> K =
Lerok [7]

Answer:

<h2>23</h2>

Step-by-step explanation:

29 is 6 more than K

Let's create an equation

29 = 6 + k

Move variable to L.H.S and change its sign

Similarly, move constant to R.H.S and change its sign

- k = 6 - 29

Calculate

- k =  - 23

Change the sign on both sides of the equation

k = 23

Hope this helps..

Best regards!!

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3 years ago
What is 500% in a fraction in simplest form.
Mashutka [201]
100 is in a full fraction, so we have 5 100's. The answer is 5.
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Janson has quarters and dimes in his pocket. he counted 42 coins that added up to $7.50
vlada-n [284]

Answer:

28 quarters and 5 dimes

7(Q)+5(D)

7(4)+5(10)

28Q      50D          Q=quarters  D=dimes

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When will the equation xn = c, where c is a whole number, have two solutions? Explain.
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3 0
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Researchers have noted a decline in cognitive functioning as people age (Bartus, 1990). However, the results from other research
kolbaska11 [484]

Complete Question

The complete question is shown on the first uploaded image

Answer:

a

Yes the researcher can  conclude that the supplement has a significant effect on cognitive skill

b

d =  0.5778

c

The result of this hypothesis test shows that there is sufficient evidence to  that the supplement had significant effect.The measure of effect size is  large due to the large value of Cohen's d (0.5778 > 0.30 )

Step-by-step explanation:

From the question we are told that

  The sample size is  n=16

    The sample mean is  M  =  50.2

    The standard deviation is \sigma  = 9

    The  population mean is  \mu =  45

     The level of significance is  \alpha =  0.05

The null hypothesis is H_o  \mu =45

The alternative hypothesis is H_a  \mu \ne 45

Generally the test statistics is mathematically represented as

          z =  \frac{M -  \mu}{\frac{\sigma}{\sqrt{n} } }

=>       z =  \frac{50.2 - 45}{\frac{9}{\sqrt{16} } }

=>       z =  2.31

Generally the p-value is mathematically represented as

     p-value  =  2 *  P(Z >  z )

      p-value  =  2 *  P(Z >  2.31 )

From the z-table  

      P(Z >  2.31 ) = 0.010444

=>     p-value  =  2 *  0.010444

=>     p-value  =  0.021

From the obtained values we see that p-value <  0.05

 Decision Rule

 Reject the null hypothesis

Conclusion

There is sufficient evidence to conclude that the supplement has a significant effect on the cognitive skill of elderly adults

Generally the Cohen's d for this study is mathematically represented as

    d =  \frac{M  -  \mu}{\sigma }

=>  d =  \frac{50.2 -45}{9 }

=>  d =  0.5778

3 0
3 years ago
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