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
nadezda [96]
3 years ago
13

PLEASE HELP ASAP 25 POINTS GOOD ANSWERS ONLY!

Mathematics
1 answer:
timama [110]3 years ago
6 0

Answer:

128

Step-by-step explanation:

You might be interested in
An investigator wants to estimate caffeine consumption in high school students. how many students would be required to estimate
astraxan [27]

We can solve this problem by referring to the standard probability distribution tables for z.

We are required to find for the number of samples given the proportion (P = 5% = 0.05) and confidence level of 95%. This would give a value of z equivalent to:

z = 1.96

Since the problem states that it should be within the true proportion then p = 0.5

Now we can find for the sample size using the formula:

n = (z^2) p q /E^2

where,

<span> p = 0.5</span>

q = 1 – p = 0.5

E = estimate of 5% = 0.05

Substituting:

n = (1.96^2) 0.5 * 0.5 / 0.05^2

n = 384.16

<span>Around 385students are required.</span>

6 0
3 years ago
Sanjay begins to correctly graph the function f(x) = (x + 1)2 – 3. Based on the axis of symmetry and the vertex, which graph cou
Vilka [71]
Given the function f(x) = (x + 1)^2 - 3, we recognize that because of the x^2 factor we have a parabola that opens up.  Its vertex is (-1, -3), which I have swiped from the given equation.  The axis of symm is x= -1.
3 0
3 years ago
Read 2 more answers
We’ve built a machine that follows these instructions:
DaniilM [7]
Hm
10 + 4 x 2 - 3
=10 + 8 - 3
=18 - 3
=15
5 0
2 years ago
Do the ratios 1:5 and 3:4 form a proportion?​
bagirrra123 [75]

Answer

no

Step-by-step explanation:

yw

3 0
3 years ago
I need help with math!!!!
PilotLPTM [1.2K]

Answer:

id say caculate :) 649.99 and 20% and the same for the others

Step-by-step explanation:

7 0
2 years ago
Other questions:
  • 3.6(5x4)divided 3+5.0=
    11·1 answer
  • Ann has a business mowing lawns
    6·1 answer
  • Simplify. (2x5+x3−3x4−x+8)−(7x5+2x4−12+6x−5x3+x2) Enter your answer, in standard form, in the box.
    9·1 answer
  • What is the equation represented​
    12·1 answer
  • What are the coordinates of the vertices of A L'M'N'?
    9·2 answers
  • PLZ help ASAP
    8·2 answers
  • What does B x h stand for?
    5·2 answers
  • Enter the degree of the polynomial below:<br><br> 2x4 + x9 + 5x6 + 5x5 - 7x3
    8·1 answer
  • Enter the value that belongs in the<br> green box
    6·1 answer
  • Kate made 180 ounces of punch for a party. She serves the punch in 8-ounce cups.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!