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3 years ago

F(-1) f(x) = -3x2 + 2x - 7

Mathematics

1 answer:

egoroff_w [7]3 years ago

3 0

Answer:

$f(-1) = -12$

Step-by-step explanation:

Step 1: Set x to -1 and solve

$f(x) = -3x^2+2x-7$

$f(-1) = -3(-1)^2+2(-1) - 7$

$f(-1) = -3(1) - 2 - 7$

$f(-1) = -3 - 2 - 7$

$f(-1) = -12$

Answer: $f(-1) = -12$

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Answer:

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A random sample is selected from a normally distributed population. The following sample statistics are obtained: n = 20, = 30,

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Answer:

b) The margin of error is approximately 3.24

e) The critical value is 1.7921.

Step-by-step explanation:

Step(i):-

Given sample size 'n' =20

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The level of significance ∝ =0.95

The degrees of freedom = n-1 = 20-1=19

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