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4 years ago

Les sept dixièmes de 70

Mathematics

1 answer:

Tom [10]4 years ago

5 0

49 Est la réponse......

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Coopers & Lybrand surveyed 210 chief executives of fast-growing small companies. Only 51% of these executives had a manageme

densk [106]

Answer:

92% Of confidence intervals to estimate the proportion of all fast-growing small companies that have a management succession plan.

(0.46154 , 0.558)

Step-by-step explanation:

Given sample size 'n' = 210

The sample proportion 'p' = 51% = 0.51

Confidence intervals are determined by

$(p^{-} - z_{\alpha } \sqrt{\frac{p^{-} (1-p^{-} }{n} } , p^{-} +Z_{\alpha } \sqrt{\frac{p^{-} (1-p^{-} )}{n } } )$

The 92% of z-score value

$Z_{\frac{\alpha }{2} } = Z_{\frac{0.08}{2} } = Z_{0.04} = 1.405$

92% Of confidence intervals to estimate the proportion of all fast-growing small companies that have a management succession plan.

$(0.51 - 1.405 \sqrt{\frac{0.51 (1-0.51 }{210} } , 0.51 +1.405 \sqrt{\frac{0.51 (1-0.51)}{210 } } )$

on calculation , we get

(0.51-0.048 , 0.51 + 0.048)

(0.46154 , 0.558)

Final answer:-

92% Of confidence intervals to estimate the proportion of all fast-growing small companies that have a management succession plan.

(0.46154 , 0.558)

3 0

3 years ago

An empty swimming pool is being filled at a rate of 10 gallons per minute. Write an equation to represent the situation. Let x=n

KATRIN_1 [288]

Y•x

Explanation: The amount of gallons (y) multiplied by the amount of time (x) shows the relationship of how many minutes (x) it takes to fill the pool in gallons(y).

7 0

4 years ago

1500(0.04)(3)=1500(0.04)(3)=

san4es73 [151]

1500(0.04) = 60
60*3 or 60(3) = 180
Both equations are the same. I don't actually fully understand why you would use the same equation after the equal sign

4 0

3 years ago

Find the sum. Express your answer in-simplest form. -6u-9/v^2- 8 + 6u+3/v^2-8

Art [367]

-6 / v^2-8. That’s it

5 0

3 years ago

Write the expression in radical form.

Effectus [21]

I think it would be B

6 0

3 years ago

Read 2 more answers