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4 years ago

A store is having a sale on trail mix and jelly beans. For

Mathematics

1 answer:

loris [4]4 years ago

4 0

I would need the numbers but in this case it would be x represented for pounds

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Small sample: During an economic downturn, companies were sampled and asked whether they were planning to increase their workfor

leva [86]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The confidence level interval is $0.016 \le C \le 0.404$

Step-by-step explanation:

The sample size is $n = 20$

The number planning to increase workforce is $x = 3$

The confidence level is $c = 98$ %

The value of proportion for a plus 4 method is

$p = \frac{x+2}{n+4}$

substituting values

$p = \frac{3+2}{20+4}$

$p =0.21$

The z-critical value at confidence level of 98% is

$z_{c}=z_{0.98} = 2.33$

This values is obtained from the standard normal table

The confidence level interval can be mathematically represented as

$C =p \ \pm z_{c} * \sqrt{\frac{p(1-p)}{n+4} }$

substituting values

$C = 0.21 \pm 2.33 * \sqrt{\frac{0.21(1- 0.21)}{20 +4} }$

$C = 0.21 \pm 0.194$

=> $0.016 \le C \le 0.404$

7 0

3 years ago

What is the point-slope form of a line thats has a slope of-4 and passes through point (-3,1)

ANEK [815]

Answer:

y - 1 = -4(x+3)

Step-by-step explanation:

We will use the point slope form of a line

y-y1 = m(x-x1) where m is the slope and (x1,y1) is the point

y - 1 = -4(x--3)

y - 1 = -4(x+3)

4 0

4 years ago

I got every other question but this one. please help

bogdanovich [222]

$\csc( \alpha ) = \frac{1}{ \sin( \alpha ) } \\$
------------------
$\sin( \alpha ) = \frac{11}{5 \sqrt{5} } = \frac{11 \sqrt{5} }{25}$

5 0

3 years ago

You can fly from Seattle to Boise for $137.50, from Boise to Witchita for $92.50 and from Witchita to Austin for $162.50. Use me

jonny [76]

That would be 392.50

6 0

3 years ago

Read 2 more answers

If point P(4, 7) is on line l, what is the equation of line l in slope intercept form?

alexira [117]

Answer:

A. y=2x-9

Step-by-step explanation:

A. Parallel lines have the same slope. That means the line y=2x+3 has the same slope as any line parallel to it. So the slope is 2.

Using m=2, substitute it and (4,-1) into the point slope form and simplify to find the y-intercept.

8 0

3 years ago