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mixas84 [53]
3 years ago
13

Pls tell me the correct option

Mathematics
2 answers:
katrin2010 [14]3 years ago
8 0

Answer:

b. \frac{1}{16}

Step-by-step explanation:

A = {2, 3}

B = {4, 6}

C = set of all possible fractions where, the numerators are in set A and the denominators are found in Set B

The 4 possible fractions we can get for set C are as follows:

Set C: { \frac{2}{4} , \frac{2}{6} , \frac{3}{4} , \frac{3}{6} }

Multiply all to get the product of all elements in Set C:

\frac{2}{4}*\frac{2}{6}*\frac{3}{4}*\frac{3}{6}

Simplify where necessary

\frac{1}{2}*\frac{1}{3}*\frac{3}{4}*\frac{1}{2}

\frac{1*1*3*1}{2*3*4*2}

\frac{3}{48}

Simply further

\frac{1}{16}

Hoochie [10]3 years ago
5 0

Answer: I would go with C I hope i am right!!

Step-by-step explanation:

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krok68 [10]

The 95% confidence interval of the population mean, in years, is (4.3, 5.3). 4 years is not part of the confidence interval, which means that it contradicts the fact that 39% of students get their college degree in four years.

-----------------------------

To solve this question, we need to find the confidence interval for the amount of time it takes the students to get the degree.

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-----------------------------

The first step to solve this problem is finding how many degrees of freedom,which is the sample size subtracted by 1. So

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-----------------------------

95% confidence interval

Standard level of confidence, we have to find a value of T, which is found looking at the t table, with 79 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 1.9905.

-----------------------------

The margin of error is:

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-----------------------------

The lower end of the interval is the sample mean subtracted by M. So it is 4.8 - 0.3 = 4.3 years.

The upper end of the interval is the sample mean added to M. So it is 4.8 + 0.3 = 5.3 years.

-----------------------------

The 95% confidence interval of the population mean, in years, is (4.3, 5.3). 4 years is not part of the confidence interval, which means that it contradicts the fact that 39% of students get their college degree in four years.

A similar question is given at brainly.com/question/24278748

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3 years ago
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