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vitfil [10]
3 years ago
10

What is the probability of getting a 3 or 7 when drawing a single card from a deck of 52

Mathematics
1 answer:
olga2289 [7]3 years ago
5 0

Answer:

1/52

Step-by-step explanation:

There are 52 cards you can draw from, 3 is one of them. 7 is another possibility.

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A research study investigated differences between male and female students. Based on the study results, we can assume the popula
garri49 [273]

Using the <u>normal distribution and the central limit theorem</u>, it is found that the interval that contains 99.44% of the sample means for male students is (3.4, 3.6).

In a normal distribution with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

  • It measures how many standard deviations the measure is from the mean.  
  • After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.
  • By the Central Limit Theorem, the sampling distribution of sample means of size n has standard deviation s = \frac{\sigma}{\sqrt{n}}.

In this problem:

  • The mean is of \mu = 3.5.
  • The standard deviation is of \sigma = 0.5.
  • Sample of 100, hence n = 100, s = \frac{0.5}{\sqrt{100}} = 0.05

The interval that contains 95.44% of the sample means for male students is <u>between Z = -2 and Z = 2</u>, as the subtraction of their p-values is 0.9544, hence:

Z = -2:

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

-2 = \frac{X - 3.5}{0.05}

X - 3.5 = -0.1

X = 3.4

Z = 2:

Z = \frac{X - \mu}{s}

2 = \frac{X - 3.5}{0.05}

X - 3.5 = 0.1

X = 3.6

The interval that contains 99.44% of the sample means for male students is (3.4, 3.6).

You can learn more about the <u>normal distribution and the central limit theorem</u> at brainly.com/question/24663213

7 0
2 years ago
Solve the missing side in the right triangle below​
maw [93]

Answer: the root of 145 so b

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Which expression uses the associative property to make it easier to evaluate 6(3/2x1/5) ?
agasfer [191]
I think the answer is B but I’m not sure, sorry if i got it wrong,

have a good day and have a good Christmas
7 0
3 years ago
A number is 6 less than its square?
Simora [160]
3 is 6 less than its square.

3^2 = 9

9-3 = 6

I hope this helps!
7 0
4 years ago
Read 2 more answers
PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer this correctly!!!! (80pts)
Valentin [98]

Answer:

I think its 57

Step-by-step explanation:

the difference of 6 divided by 2 is 3

i just divided 171 by 3 and got 57

3 0
3 years ago
Read 2 more answers
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