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kobusy [5.1K]
3 years ago
11

In Marta's class, the ratio of students who ate tacos for lunch to the students who ate burritos was 12:18.

Mathematics
1 answer:
boyakko [2]3 years ago
3 0

Answer:

20 30

Step-by-step explanation:

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Determine # of solutions using discrimination
D = b^2 - 4 ac
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Two different weight loss programs are being compared to determine their effectiveness. Ten men were assigned to each program (t
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Answer:

WE reject the Null and conclude that one of the drug is more effective than the other.

Step-by-step explanation:

Given :

Diet 1 3.4 10.9 2.8 7.8 0.9 5.2 2.5 10.5 7.1 7.5

Diet 2 11.9 13.1 11.6 6.8 6.8 8.8 12.5 8.6 17.5 10.3

This is a matched pair sample :

The hypothesis :

H0 : μd = 0

H1 : μd ≠ 0

Hence, we intun the difference between the two groups of value :

Difference, d = -8.9,-2.2,-8.8,1,-5.9,-3.6,-10,1.9,-10.4,-2.8

The test statistic :

dbar ÷ (Sd/√n)

dbar = mean of difference = Σd / n = - 49.7 / 10 = - 4.97

Standard deviation of difference, Sd = 4.51

Test statistic :

-4.97 ÷ (4.51/√10)

Test statistic = - 3.485

The sample size, n = 10

df = n - 1 ; 10 - 1 = 9

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If Test statistic > |Critical value |

Since 3.486 > 1.833 ; WE reject the Null and conclude that one of the drug is more effective than the other

5 0
3 years ago
What is 3.96 × 0.4, please help me ​
Kisachek [45]

Answer:

1.584

Step-by-step explanation:

1.584 = 3.96 × 0.4

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Mazyrski [523]
10x=1/2x+3

I think it's right, but not 100% sure
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1. Write the following sentence as an equation: the product of w and 15 is 165.
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W+15=165
W=165/15
W=11
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2 years ago
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