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
Help<br> What is an equation of the line that passes through the points (-4, 4) and (8.1)?
Svetach [21]

Answer:

y = -1/4x +3

Step-by-step explanation:

Hope this helps!

3 0
3 years ago
There are six professors teaching the introductory discrete mathematics class at someuniversity. The same final exam is given by
musickatia [10]

Answer:

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Identify the property. ( x + y ) + z = x + ( y + z )
klemol [59]

Answer: Associative Property

Step-by-step explanation:

4 0
3 years ago
What is the answer to this question?<br> Y=x^2-1 with the input as 5
mixas84 [53]

We can see that, when the input is 5, the output is 24.

<h3>How to evaluate an equation?</h3>

Here we have the equation:

y = x^2 - 1

Where y is the output and x is the input.

We want to evaluate it with the input as 5, so we need to replace the variable x by the number 5, we will get:

y = 5^2 - 1 = 24

Then we can see that, when the input is 5, the output is 24.

If you want to learn more about evaluating functions:

brainly.com/question/1719822

#SPJ1

4 0
2 years ago
A media company wants to track the results of its new marketing plan, so the video production manager recorded the number of vie
Alisiya [41]

Answer:

f(x)=5120(1.25)^{x}

Step-by-step explanation:

As per the given question

As we know that

f(x) and x are related by following equation

f(x)=a( {b})^{x}

where

b is the common ratio

Now first we have to compute the value for b which are as follows

\frac{6400}{5120}= 1.25

\frac{8000}{6400}= 1.25

Like if we take the ratio by this method than it comes 1.25

Therefore the common ratio, b = 1.25

So,

a = 5,120

Hence, the equation which model the relationship between the number of weeks and the number of viewers is

f(x)=5120(1.25)^{x}

8 0
3 years ago
Read 2 more answers
Other questions:
  • How do you find percent change??
    9·2 answers
  • Diane has a rectangular poster that is 20 centimeters long and 15 centimeters wide. What is the area of the poster in square met
    5·1 answer
  • Find the area of the shape shown below.<br> 3.5,2,2,2,2,5
    7·1 answer
  • what is the scale if the scale drawing area is 5 square inches and the actual area is 125 square feet
    8·1 answer
  • 3. (a) Find the student's total displacement for the entire trip.
    11·1 answer
  • In triangle Uvw , the measure of angle w=90°, the measure of angle u=50 , and wu = 27 feet. Find
    9·1 answer
  • A landlord owns 3 condominiums, a l-bedroom condo, a 2-bedroom condo, and a 3-
    6·1 answer
  • A 4-pint carton of sour cream costs $9.12. What is the price per cup?
    7·1 answer
  • A drilling crew dug to a height of -45 1/4 feet during their first day of drilling. On the second day, the crew dug down 9 1/3 f
    9·1 answer
  • Caroline surveyed 380 of the students in her school about their favorite color. 209 students said their favorite color was blue.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!