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Igoryamba
3 years ago
6

Is this a valid conclusion? A. B. C. D.

Mathematics
2 answers:
Fofino [41]3 years ago
8 0

Answer: a.

Step-by-step explanation:

qaws [65]3 years ago
5 0

Answer:

goodbye is a great conclusion

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2(x+10)+10-4+5<br><br> How can I solve this
Taya2010 [7]

Answer:

start witg parentecees, then multiplication then addind and substracting

Step-by-step explanation:

2(x+10)+10-4+5 = 2x + 20 +10 -4 +5

2x+31 is the final answer

5 0
3 years ago
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Q
kifflom [539]
7.3 is your answer my guy
8 0
2 years ago
Last Friday Cicely had $22.50. Over the weekend she received some money for
Bumek [7]

Answer:

It should be $32 - $22.50.

Step-by-step explanation:

This is because we're trying to find out the amount she received. So we will subtract the amount she already has from how much she now has to figure out how much she received. 32 - 22.50 = 9.50.

Hope this helps:)!

5 0
2 years ago
For a statistics class project, a college student randomly samples 75 men who exercise at a gym regularly and 68 women who exerc
raketka [301]

Answer:

iii. The data do not provide sufficient evidence to conclude that the mean number of minutes exercised per week is larger for men than for women at this gym

Step-by-step explanation:

1) The hypotheses are

H0: u1 ≤ u2 against the claim Ha: u1 > u2

The men spend less or equal time than the women  at the gym each week

vs

the men  spend greater time  than the women at the gym each week

2) The test statistic is

t= (x1`- x2`) / √ s1²/n1+ s2²/n2

t= 65.7- 64.8/√(13.9)²/75 + (9.6)²/68

t= 0.9/√2.57613 +1.35529

t=0.4539

and the degrees of freedom is

3) υ = [s₁²/n1 + s₂²/n2]²/ (s₁²/n1 )²/ n1-1 + (s₂²/n2)²/n2-1

=[(13.9)²/75 + (9.6)²/68]²/ [(13.9)²/75 ]² /74 + [ (9.6)²/68]²/67

= 139

The degrees of freedom is always rounded in this calculation

4) The Critical region is [1.656, ∞]

5) t-score is outside of the critical region, so there is not enough evidence to reject H₀.

iii. The data do not provide sufficient evidence to conclude that the mean number of minutes exercised per week is larger for men than for women at this gym

4 0
2 years ago
Here are the heights (in inches) of 8 students in a seminar.
EastWind [94]

Answer:

50%

Step-by-step explanation:

there are 8 students and 4 are shorter than 65 inches.

So 4 divided by 8 = 0.5 or 50%

7 0
2 years ago
Read 2 more answers
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