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
Korvikt [17]
3 years ago
10

A researcher initially plans to take an SRS of size 160 from a certain population and calculate the sample mean. Later, the rese

archer decides to increase the sample size so that the standard deviation of the sampling distribution of will be half as big as when using a sample size of 160.
What sample size should the researcher use?
Mathematics
1 answer:
lara [203]3 years ago
3 0

Answer:

640

Step-by-step explanation:

You might be interested in
ANSWER THIS PLS!!!!
astra-53 [7]

Answer and Step-by-step explanation: With the constant velocity motion formula, we can determine constant velocity of the object in motion whose data we collected:

x = x₀ + vt

Velocity can be calculated as:

v=\frac{x-x_{0}}{t}

v=\frac{70-40}{10}

v = 3 m/s

The beginning of the data collect, object is 40m away, then x₀ = 40.

So, equation modeling the object's path is x = 40 + 3t.

5 0
3 years ago
Guided Practice
frez [133]

Answer:

A. 15, 20, and 25

Step-by-step explanation:

Note that 3-4-5 is a pythagorean triple via following:

\sqrt{ (3^2 + 4^2 )} = 5^2

Dividing 15, 20, and 25 by 5 nets you the pythagorean triple 3-4-5.

7 0
3 years ago
Read 2 more answers
Solve the differential equation: dy/dx = 4y2x1/3
labwork [276]
The first thing you should do is use the method of variable separation. Then, integrate both sides to find the solution.
 In this case the answer is
  <span>D. - 1/y = 3x4/3 + C</span> 
 I attach the solution

4 0
3 years ago
Armando found the volume of the figure below by using the steps shown.
Gnesinka [82]

Answer:

Armando use the wrong demensions for the triangular prism?

Step-by-step explanation:

The height is actually 8 inches.

5 0
3 years ago
Read 2 more answers
2 1/2r + 1 + 2r = 9 1/10
GalinKa [24]

This should help you here are the steps of your problem :)


2*(1/2)*r+2*r+1 = 9*(1/10) // - 9*(1/10)


2*(1/2)*r+2*r-(9*(1/10))+1 = 0


2*(1/2)*r+2*r-9/10+1 = 0


3*r+1/10 = 0 // - 1/10


3*r = -1/10 // : 3


r = -1/10/3


r = -1/30


r = -1/30


So your answer would be 1/30

4 0
3 years ago
Other questions:
  • Please help thank you.
    13·1 answer
  • The sides of a triangle measure 2.24 inches, 3.56 inches, and 4.50 inches. What is the perimeter of this triangle? Report the an
    14·2 answers
  • Please answer this question !! Will give brainliest !
    12·1 answer
  • 1.) a^4 times 4a^7<br> 2.) | 3-2(4+3)+4^3 | those are absolute value signs<br> 3.) (3x^6)^3
    10·1 answer
  • The following data points represent the number of emails that the CEO of Rock Town Apparel sent each day since he started using
    6·1 answer
  • Of the 35 students in Student Council, 60% of the students are boys. How many girls
    8·2 answers
  • Four more than three times a number x is -26
    7·2 answers
  • Please hurry I will mark you brainliest
    12·2 answers
  • Can someone please help me out with this math work.
    12·1 answer
  • Vanessa has 24 marbles. she gives 3/8 of the marbles to her brother cisco. if you divide Vanessa's marbles into 8 equal groups,
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!