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2 years ago

5

In Lisa's class 24 of the students are tall and 12 are short. In Paul's class 15 students are tall and 20 are short. Which class

has a higher ratio of tall to short students?

1 answer:

Lelu [443]2 years ago

8 0

Lisa's class I think bc it's 24:12 vs 15:20

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Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $30,

REY [17]

Answer:

a) 217

b) 1351

c) 5403

Step-by-step explanation:

Given that:

confidence interval (c) = 0.95

$\alpha =1-0.95=0.05\\\frac{\alpha }{2} =\frac{0.05}{2}=0.025$

The Z score of $\frac{\alpha }{2}$ is from the z table is given as:

$Z_{\frac{\alpha }{2} }=Z_{0.025}=1.96$

Range = $45000 - $30000 = $15000

The standard deviation (σ) is given as:

$\sigma=\frac{Range}{4} =\frac{15000}{4}=3750$

Sample size (n) is given as:

$n=(\frac{Z_{\frac{\alpha}{2} }\sigma}{E} )^2$

a) E = $500

$n=(\frac{Z_{\frac{\alpha}{2} }\sigma}{E} )^2= (\frac{1.96*3750}{500} )^2$ ≈ 217

b) $n=(\frac{Z_{\frac{\alpha}{2} }\sigma}{E} )^2= (\frac{1.96*3750}{200} )^2$ ≈ 1351

c) $n=(\frac{Z_{\frac{\alpha}{2} }\sigma}{E} )^2= (\frac{1.96*3750}{100} )^2$ ≈ 5403

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2 years ago

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An internet company charges $8.95 per month for the first 3 months that it hosts your Web site. Then the company charges $11.95

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Answer:

$86.60

Step-by-step explanation:

1. Subtract 8-3=5

2. Multiply 3*8.95=$26.85

3. Multiply 5*11.95=$59.75

4. Add $26.85+$59.75=$86.60

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3 years ago

Someone please help me, I’m doing a final right now, and this question so confusing.

Sauron [17]

Answer:

C and D

Step-by-step explanation:

C: (2,0)

D: (0,4)

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2 years ago

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sattari [20]

Answer:

D is what I think

Step-by-step explanation:

It equals (0,0)

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3 years ago

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A father is ten times as old as his daughter. In 5 years he will be just five times as old as she will be. How old are they now?

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She is four years old which makes her father 40 that's ten times her age in five years she'll be 9 and he will be 45 which is 5 times her age. hope that helped you out.

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