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Veseljchak [2.6K]

3 years ago

5

In a survey, 31 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped

with a mean of $49 and standard deviation of $8. Find the margin of error at a 80% confidence level. Give your answer to two decimal places.

1 answer:

Andrei [34K]3 years ago

7 0

Answer:

Step-by-step explanation:

i would help you but i dont know , sorry

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Keith_Richards [23]

no ye puedo ayudar amigo o amiga

8 0

3 years ago

The age that women in Virginia decide to get married for the first time is normally distributed with an average of 26.3 years an

Nuetrik [128]

Answer:

The answer is 0.9789 approximately equal to 0.9790

Step-by-step explanation:

See the attached files for the details, hope it is clearly understood.

<span class="sg-text sg-text--link sg-text--bold sg-text--link-disabled sg-text--blue-dark"> pdf </span>

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3 years ago

Where is the value of X in the equation

malfutka [58]

Answer:

x=-2

Step-by-step explanation:

Let's solve your equation step-by-step.

−6x=5x+22

Step 1: Subtract 5x from both sides.

−6x−5x=5x+22−5x

−11x=22

Step 2: Divide both sides by -11.

−11x

−11

=

22

−11

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7 0

3 years ago

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Factor the given polynomial completely.<br><br> a²-4a-32

zhuklara [117]

Answer:

(x + 4)(x - 8).

Step-by-step explanation:

a²-4a-32

We need 2 numbers whose product is -32 and whose sum is -4.

They are +4 and -8, so the factors are:

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7 0

2 years ago

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Write the point-slope form of an equation for the line passing through the point (3, -2) with slope 4.

satela [25.4K]

Equation of a line is given by y - y1 = m(x - x1); where m is the slope.
y - (-2) = 4(x - 3)
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3 years ago