hi how do i do this please

Answer:

a) The minimum sample size is 601.

b) The minimum sample size is 2401.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which

z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].

The margin of error is:

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

For this problem, we have that:

We dont know the true proportion, so we use [tex]\pi = 0.5[/tex], which is when we are are going to need the largest sample size.

95% confidence level

So [tex]\alpha = 0.05[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.05}{2} = 0.975[/tex], so [tex]Z = 1.96[/tex].

a. If a 95% confidence interval with a margin of error of no more than 0.04 is desired, give a close estimate of the minimum sample size that will guarantee that the desired margin of error is achieved. (Remember to round up any result, if necessary.)

This is n for which M = 0.04. So

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

[tex]0.04 = 1.96\sqrt{\frac{0.5*0.5}{n}}[/tex]

[tex]0.04\sqrt{n} = 1.96*0.5[/tex]

[tex]\sqrt{n} = \frac{1.96*0.5}{0.04}[/tex]

[tex](\sqrt{n})^2 = (\frac{1.96*0.5}{0.04})^2[/tex]

[tex]n = 600.25[/tex]

Rounding up

The minimum sample size is 601.

b. If a 95% confidence interval with a margin of error of no more than 0.02 is desired, give a close estimate of the minimum sample size necessary to achieve the desired margin of error.

Now we want n for which M = 0.02. So

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

[tex]0.02 = 1.96\sqrt{\frac{0.5*0.5}{n}}[/tex]

[tex]0.02\sqrt{n} = 1.96*0.5[/tex]

[tex]\sqrt{n} = \frac{1.96*0.5}{0.02}[/tex]

[tex](\sqrt{n})^2 = (\frac{1.96*0.5}{0.02})^2[/tex]

[tex]n = 2401[/tex]

The minimum sample size is 2401.

9514 1404 393

Answer:

  10 cups

Step-by-step explanation:

The number of cups in a pitcher can be found by dividing cups by pitchers:

  (15 cups)/(1.5 pitchers) = 10 cups/pitcher

A full pitcher holds 10 cups.

Answer:

es 48876256542389087565

Answer:

$49 / hour

Step-by-step explanation:

343/7 = $49/hour

Answer:

49

Step-by-step explanation:

You do 343÷7 which equals your sum

Answer:

1/4

Step-by-step explanation:

using the product-to sum formulas, this is

1/2 (cos(75+15) + cos(75-15))

Answer:

1/4

Step-by-step explanation:

PLATO USER

Answer: A

Step-by-step explanation:

It's on edge i got a 100%

Answer:

One solution

Step-by-step explanation:

5x-8 = 3x+8

2x = 16

x = 8 = true once

Answer:

x=2

Step-by-step explanation:

5x-8=3x+8

= >

5x-3x=8+8

=8x= 16

therefore x= 16/8

ie) 2

Answer:

hello! :) have a good day!

1). 24

2). 27

3). 5

PICTURE 1:

The answer is 24: (13 7/10) Rounded To The Nearest Whole Number is: (14)

[tex]13 \frac{7}{10} = 14[/tex]

AND,

(10 1/8) Rounded To The Nearest Whole Number is: (10)

[tex]10 \frac{1}{8} = 10[/tex]

So, 14 + 10 = 24

______________________________________

PICTURE 2:

The answer is 5: (8 1/5) Rounded To The Nearest Whole Number is: (8)

[tex]8 \frac{1}{5} = 8[/tex]

AND,

(2 7/8) Rounded To The Nearest Whole Number is: (3)

[tex]2 \frac{7}{8} = 3[/tex]

So, 8 - 3 = 5

______________________________________

PICTURE 3:

The answer is 27: (58 5/12) Rounded To The Nearest Whole Number is: (58)

[tex]58 \frac{5}{12} = 58[/tex]

AND,

(30 5/7) Rounded To The Nearest Whole Number is: (31)

[tex]30 \frac{5}{7} = 31[/tex]

So, 58 - 31 = 27

______________________________________

HERE ARE ALL THE ANSWERS:

PICTURE 1: 24

PICTURE 2: 5

PICTURE 3: 27

HOPE THIS HELPS!! :)

Answer:

8 is the answer

Step-by-step explanation:

Answer:

8

Step-by-step explanation:

[tex]z=2^{3}[/tex]

This question is essentially asking what is two to the third power, or;

[tex]2 * 2 * 2[/tex]

[tex]= 8[/tex]

Answer:

As the x value increases, the y value also increases. So as one increases the other increases.

So your answer is

Greater hours worked, more cakes delivered

Step-by-step explanation:Hope this helps :-)

Answer:

It would be no other than A. :) I got this by putting a very skinny strip of paper and making the graph then, I easily just went from the 0 points and saw how the numbers on each side are both even it would make more sense as A because it is just how this works! :)

Step-by-step explanation:

Answer:

m=2

Step-by-step explanation:

I calculated it sorry

Answer:

(x,y)= (4,-4)

Step-by-step explanation:

Thanks me later

Answer:

I love math anyways

the ans is in the picture and the steps hope it helps :D hehe

(hope it helps can i plz have brainlist it will make my day :D hehe)

Step-by-step explanation:

Answer:

The Answer is D

Step-by-step explanation:

Just took the quiz

1+3/8=(8+3)/8=11/8 used per day. 5+1/2=(10+1)/2=11/2 available.

(11/2)/(11/8)=(11/2)(8/11)=88/22=4

Answer:

x = 3

Step-by-step explanation:

5x + 2 = 7x – 4

-2x = -6 (Subtraction)

x = 3 (division)

divided by negative from a negative so,

negative/negative = positive.

Given:

The polynomial is

[tex]p(x)=x^3-2x^2+2x[/tex]

To find:

The real and complex zeros of the equation.

Solution:

We have,

[tex]p(x)=x^3-2x^2+2x[/tex]

For zeros, p(x)=0.

[tex]x^3-2x^2+2x=0[/tex]

[tex]x(x^2-2x+2)=0[/tex]

[tex]x(x^2-2x+2)=0[/tex]

[tex]x=0\text{ and }x^2-2x+2=0[/tex]

The real value of x is 0. The equation [tex]x^2-2x+2=0[/tex] will give complex roots. Here, a=1, b=-2 and c=2.

Using quadratic formula, we get

[tex]x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}[/tex]

[tex]x=\dfrac{-(-2)\pm \sqrt{(-2)^2-4(1)(2)}}{2(1)}[/tex]

[tex]x=\dfrac{2\pm \sqrt{4-8}}{2}[/tex]

[tex]x=\dfrac{2\pm \sqrt{-4}}{2}[/tex]

On further simplification, we get

[tex]x=\dfrac{2\pm \sqrt{-1}\sqrt{4}}{2}[/tex]

[tex]x=\dfrac{2\pm 2i}{2}[/tex]

[tex]x=\dfrac{2(1\pm i)}{2}[/tex]

[tex]x=1\pm i[/tex]

Therefore, the real zero is 0 and the complex zeros are 1+i and 1-i.

Answer:

the second one

Step-by-step explanation:

I think

Answer: 0.5

Step-by-step explanation:

17 is half of 34 and 1/2 = 0.5

Answer: 0.5  is this second grade

Answer:

log(41)/log(7) OR 1.90839852...

Answer: A 9 min

Step-by-step explanation:  54/6=9

-6-6-6-6-6-6-6-6-6=-54

Answer:

2

Step-by-step explanation:

This expression can be rewritten as

8

----

9

======

 4

 ---

  9

If we now invert the denominator fraction 4/9 and multiply the result, we get:

 8       9

----- * ----- = 2

 9       4

Answer:

Try your best! I know you can do it!

Answer:

full arrow going left from 46

Step-by-step explanation:

Inequalities are used to represent unequal expressions.

The inequality is: [tex]h \le 46[/tex]

The height (h) is said to be no greater than 46 inches.

The text "no greater than" means less than or equal to.

In inequalities, less than or equal to is represented with <=

So, the inequality is:

[tex]h \le 46[/tex]

See attachment for the graph of the inequality.

Read more about inequalities at:

https://brainly.com/question/18881247

Answer:

We know,

Area of parallelogram = b * h

= 2x * 7 = 14x

Hope it helped

All the best!!

Answer:

not parallel

Step-by-step explanation:

Actually they're Perpendicular.

Answer:

Step-by-step explanation:

Use the power rule for differentiation

[tex]f'(x)=nx^n^-^1[/tex]

[tex]f'(x)=(4\frac{d}{dx} 2x^2^-^1)-(8\frac{d}{dx} 1x^1^-^1)+\frac{d}{dx}2[/tex]

[tex]f'(x) =8x-8[/tex]

The derivative of a constant is always zero