1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nataly_w [17]
3 years ago
10

Pls help need ASAP Use the number line given to choose the best answer for the question.

Mathematics
1 answer:
DIA [1.3K]3 years ago
8 0

Answer:

-3

Step-by-step explanation:

You might be interested in
In the past, 21% of all homes with a stay-at-home parent, the father is the stay-at-home parent. An independent research firm ha
Afina-wow [57]

Answer:

A sample size of 79 is needed.

Step-by-step explanation:

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

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

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

For this problem, we have that:

\pi = 0.21

The margin of error is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

95% confidence level

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

What sample size is needed if the research firm's goal is to estimate the current proportion of homes with a stay-at-home parent in which the father is the stay-at-home parent with a margin of error of 0.09?

A sample size of n is needed.

n is found when M = 0.09. So

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.09 = 1.96\sqrt{\frac{0.21*0.79}{n}}

0.09\sqrt{n} = 1.96\sqrt{0.21*0.79}

\sqrt{n} = \frac{1.96\sqrt{0.21*0.79}}{0.09}

(\sqrt{n})^{2} = (\frac{1.96\sqrt{0.21*0.79}}{0.09})^{2}

n = 78.68

Rounding up to the nearest whole number.

A sample size of 79 is needed.

4 0
3 years ago
Solve for x<br> <img src="https://tex.z-dn.net/?f=%5Cfrac%7B11%7D%7Bx%2B5%7D" id="TexFormula1" title="\frac{11}{x+5}" alt="\frac
Vika [28.1K]
The answer is X = -4/3
8 0
2 years ago
Read 2 more answers
If 18% of the beads in a bag are green, 25% are red, and 40% are purple, what is the probability of choosing a green bead and th
Elina [12.6K]

the answer is a)22 %

3 0
3 years ago
Read 2 more answers
Does anyone under stand this one ??
Annette [7]

Answer:

its c i belive'

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Thank you for helping me
dedylja [7]

Answer:

thank you for giving me points ;)

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE HELP! WILL REWARD BRAINLIEST TO BEST ANSWER WRITE DOWN INFORMATION. Create all four digit numbers that are divisible by 8
    10·1 answer
  • How to determine if a number is prime or composite
    6·1 answer
  • Tuan answered 20 customer service calls in 3 hours. At this rate, how many customer service calls can Tuan answer in 7.5 hours?
    6·1 answer
  • 4. What is the y-intercept of the line
    14·1 answer
  • Evaluate the expression for s=9<br> 72/s
    9·1 answer
  • 1. -2x = 12
    13·2 answers
  • What is the range of each function given below let g(x)=3^2x?
    10·1 answer
  • Solve the following system: y = x + 3
    12·2 answers
  • Due to manufacturing error, three cans of regular soda were accidentally filled with diet soda and placed into a 24 pk. Suppose
    7·1 answer
  • 18. Curry powder is sold at $7.45 per 100 g. How much money will Thuy need in order to buy 3 kg of curry powder?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!