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
Nikitich [7]
3 years ago
9

49 divided by ? makes the 49 a lower number?

Mathematics
1 answer:
ad-work [718]3 years ago
8 0

Answer:

im not sure what you mean can you elaborate

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
Use the formula D= RT to solve the problem. Mrs. Warren traveled 1,069 miles from Vian, OK to Raleigh NC at an average rate of 6
zalisa [80]
The answer is C!!!!!!!!!!!!!!!!!!
5 0
2 years ago
Nancy has nine books and she has read 8 total books Sally has two times more books the Nancy how many books does Sally have
ankoles [38]
Sally has eight-teen books.
7 0
3 years ago
A scalene triangle has two sides that are equal in length.
iogann1982 [59]

false that not true they have all unequal sides

8 0
3 years ago
The measure of an angle is 5 times as great as the measure of it's complement. Find the measure of the angle
horrorfan [7]
15 is the mesure of the angle
4 0
3 years ago
Read 2 more answers
Other questions:
  • Y = 2x + 3
    14·1 answer
  • Can anyone please answer answer question 7.<br> Also it takes awhile to load the picture.
    14·1 answer
  • The sum of the squeres of two consecutive positive even numbers is 340. Find the numbers
    7·1 answer
  • Is 0.1234 rational or irrational
    15·2 answers
  • Solve for v.<br>h = vt - 16t^2<br>What is v equal to?​
    15·1 answer
  • Present the trigonometric relations of the ratios via,<br> Pythagoras Theorem
    9·1 answer
  • 3v=4.8 what is v anwser
    8·2 answers
  • A study of a population of 600 turtles revealed that 6 out of 90 turtles in the
    14·1 answer
  • Please help me! I’ve already asked this but nobody answered me so-
    13·1 answer
  • Mr. Scott bought 5 2/5 yards of wood to build a bird house. If he used 4 7/10 yards to make one bird house, how much wood will h
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!