4 years ago

From a club of 23 people, in how many ways can a group of five members be selected to attend a conference?

Mathematics

1 answer:

Artemon [7]4 years ago

4 0

Answer:

true

Step-by-step explanation:

If the total unit cost of manufacturing Product Y is currently $40 and the total unit cost after modifying the style is estimated to be $48, the differential cost for this situation is $8.

true

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Suppose that a random variable X is continuously uniform between the values of 3 and 8. Find the variance of the distribution of

Korolek [52]

The formula of the variance of the distribution of sample mean of a random variable X, which it will denoted by $V(\bar{X}),$ is

$\frac{\sigma^2_X}{n}\ ,\\$

where n is the size of the sample.

Since X is continuously uniform between 3 and 8, you have

$\sigma^2_X = \frac{(8-3)^2}{12} = \frac{25}{12} \ .$

Therefore, the variance wanted is $V(\bar{X} ) = \frac{25}{26\cdot12}\approx0.0801$

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3 years ago

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spin [16.1K]

Answer:

d 86

Step-by-step explanation:

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4 years ago

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On mr robinsons last history test for this marking period. the average score was 98. Fourty students took the test and 39 studen

BabaBlast [244]

Answer:

Step-by-step explanation:

$\displaystyle \frac{39(100)+x}{40}=98\\\\3900+x=3920\\\\x=20$

Therefore, the remaining student scored a 20 (which sounds weird, but I'm going with it).

6 0

2 years ago

* George scored on average of 80% of three tests.

Zigmanuir [339]

Answer: 100%

Step-by-step explanation:

100 + 80 + 80+ 80 = 340 (total scores of 4 tests)

340 divided by the number of tests 4 = 85

George would need to score 100% on his next test to bring his test average from 80 to 85.

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Ne4ueva [31]

Your answer will be $2.40

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3 years ago

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