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3 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]3 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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If the points are connected what polygon is formed

aleksklad [387]

You need to include an image so I can help

4 0

3 years ago

6+9=?<img src="https://tex.z-dn.net/?f=6x%5E%7B2%7D%20%2B7x-9%3D" id="TexFormula1" title="6x^{2} +7x-9=" alt="6x^{2} +7x-9=" ali

ELEN [110]

Answer:

are u sure thet write the question right?

4 0

2 years ago

An article includes the accompanying data on compression strength (lb) for a sample of 12-oz aluminum cans filled with strawberr

Veseljchak [2.6K]

Answer:

The calculated value |t| = 2.375 > 2.1009 at 0.05 level of significance

Null hypothesis is rejected 

Alternative hypothesis is accepted

The extra carbonation of cola results in a higher average compression strength

Step-by-step explanation:

Step(i):-

Given data

First sample size (n₁) = 10

mean of the first sample(x₁⁻) = 537

standard deviation of the first sample (S₁) = 22

second sample size (n₂) = 10

mean of the second sample (x₂⁻) = 559

standard deviation of the second sample (S₂) = 17

Step(ii):-

Null hypothesis : H₀:- The extra carbonation of cola results in a lower average compression strength

Alternative Hypothesis :H₁

The extra carbonation of cola results in a higher average compression strength

Step(iii):-

By using student's t -test for difference of means

Test statistic

  $t = \frac{x^{-} _{1}-x^{-} _{2} }{\sqrt{S^{2} (\frac{1}{n_{1} }+\frac{1}{n_{2} } } )}$ 

 where 

  $S^{2} = \frac{n_{1}S^{2} _{1} + n_{2} S_{2} ^{2} }{n_{1}+n_{2} -2 }$ 

  $S^{2} = \frac{10(22)^{2} + 10 (17) ^{2} }{10+10 -2 } = \frac{ 7730}{18} = 429.4$ 

  $t = \frac{537-559 }{\sqrt{429.4 (\frac{1}{10 }+\frac{1}{10 } } )}$ 

 t = -2.375

|t| = |-2.375| = 2.375

Degrees of freedom

γ = n₁+n₂ -2 = 10+10-2 =18

 $t_{\frac{\alpha }{2} ,n-1}=t_{(\frac{0.05}{2} ,18)} = t_{(0.025,18)}}=2.1009$ 

The calculated value |t| = 2.375 > 2.1009 at 0.05 level of significance

Null hypothesis is rejected 

Alternative hypothesis is accepted

Final answer:-

The extra carbonation of cola results in a higher average compression strength

 

5 0

2 years ago

Solve for the ? angle

daser333 [38]

Answer:

Step-by-step explanation:

since all angles add up to 180

and since this is a right triangle the square in the corner is 90 degrees

so 40+90+x=180

130+x=180

subtract 130 from both sides

130-130+x=180-130

x=50

Hope that helps :)

7 0

3 years ago

Mariana is making a large pot of pasta. She mixes together 5 pounds of pasta, 6 pounds of sauce, and

Blizzard [7]

Answer:

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers