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
photoshop1234 [79]
3 years ago
9

Two community service groups, J and K, each have less than 100 members. Members of both groups volunteer each month to participa

te in a community-wide recycling day. A study was conducted to investigate whether the mean number of days per year of participation was different for the two groups. A random sample of 45 members of group J and a random sample of 32 members of group K were selected. The number of recycling days each selected member participated in for the past 12 months was recorded, and the means for both groups were calculated. A two-sample t-test for a difference in means will be conducted. Which of the following conditions for inference have been met?I. The data were collected using a random method.II. Each sample size is less than 10 percent of the population size.III. Each sample size is large enough to assume normality of the sampling distribution of the difference in sample means.
A. I onlyB. II onlyC. III onlyD. I and III only E. I, II, and III
Mathematics
2 answers:
Ivanshal [37]3 years ago
7 0

Answer:

D. 1 and 3 only

Step-by-step explanation:

Ymorist [56]3 years ago
6 0

Hopefully this helps out!

You might be interested in
What is the value of this expression when c = -4 and d = 10?
lianna [129]

The complete question is

"What is the value of this expression when c= -4 and d= 10?

1/4 (c^3+d²)

A.2

B.9

C.21

D.41"

The value of this expression when c = -4 and d = 10 will be option B 9.

<h3>What is a simplification of an expression?</h3>

Usually, simplification involves proceeding with the pending operations in the expression.

Simplification usually involves making the expression simple and easy to use later.

The given expression is

1/4 (c^3+d^2)\\\\1/4 ((-4)^3+(10)^2)\\\\1/4 ( -64 + 100)\\\\1/4 (36)\\\\9

Hence, the value of this expression when c = -4 and d = 10 will be option B 9.

Learn more about an expression here:

brainly.com/question/1249625

#SPJ1

6 0
1 year ago
Question 14 of 25
Naily [24]

Answer:

A

Step-by-step explanation:

perpendicular lines are the negative reciprocals of each other, and a pair of these lines intersects at 90 degrees.

5 0
2 years ago
Read 2 more answers
What is the area of the triangle show above
ehidna [41]

Answer:

A = 64 units²

Step-by-step explanation:

A = 1/2bh

Step 1: Define

A = ?

b = 16 units

h = 8 units

Step 2: Substitute and Evaluate

A = 1/2(16 units)(8 units)

A = (8 units)(8 units)

A = 64 units²

4 0
3 years ago
(b)The graph of y = g(x) is shown. Draw the graph of g(2x). Will award 100 Brainly points
ivanzaharov [21]

Using the stated transformation, the graph of g(2x) is given at the end of the answer.

<h3>Horizontal stretch and compression</h3>

An horizontal stretch or an horizontal compression happens when a constant is multiplied at the domain of the function, as follows:

g(x) = f(ax).

The definition of stretch or compression depends on the value of the constant a, as follows:

  • If a > 1, it is a compression by a factor of 1/a.
  • If a < 1, it is a stretch by a factor of 1/a.

In this problem, the rule is:

f(x) = g(2x).

Meaning that f(x) is an horizontal compression by a factor of 1/2 of g(x), and then the vertices are given as follows:

  • (0,0).
  • (1,-4).
  • (2,-2).

That is, in each vertex, the x-coordinate was divided by 2, and thus the graph with these vertices is given at the end of the answer.

More can be learned about transformations at brainly.com/question/28725644
#SPJ1

8 0
1 year ago
What is 5.17490 rounded to the nearest thousandth
Annette [7]
<span>5.17490 rounded to the nearest thousandth is 5.175</span>
3 0
3 years ago
Read 2 more answers
Other questions:
  • Given: A(-7,8), M(-3,6) find the midpoint
    8·1 answer
  • A bakery sold 112 cupcakes in one day. The head baker predicted he would sell 92 cupcakes that day. What was the percent error o
    9·1 answer
  • What is 37% as a fraction and a decimal
    12·2 answers
  • Which statistic indicates the strength of the relationship between the length of the auction and final price?
    11·1 answer
  • 1. In Tulsa, Oklahoma the sales tax is 7.9%. If
    8·1 answer
  • If Marco has 5 apples and eats 3. how many does ge have left?
    5·1 answer
  • Help! Mad, range or Iqr?? <br> (Picture included)
    13·2 answers
  • 38.9 divided by 2.91<br> What is my answer
    12·1 answer
  • What is the result when 6x3 + 25x2 + 20x + 4 is divided by 3x + 2?
    5·1 answer
  • A $50 dallor shirt is on sale for $42. What percent does the costermer save
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!