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
Sergeeva-Olga [200]
3 years ago
5

The manager of a mall conducted a survey among two groups (n1 = 100, n2 = 100) of visitors to the mall on different days. She fo

und that the first group spent an average of 60 minutes in the mall, while the second group spent an average of 90 minutes in the mall. If the manager wishes to see the difference in the average times spent by the two groups in the mall,
Which of the following could be the alternative hypothesis?

a. The difference in the average times spent by the two groups in the mall is 30 minutes.
b. There is at least some difference in the average times spent by the two groups in the mall.
c. There is a difference in the average times spent by the two groups in the mall, with a standard deviation of 30 minutes.
d. There is no difference in the average times spent by the two groups in the mall.
Mathematics
1 answer:
DedPeter [7]3 years ago
8 0

Answer:

Option B - There is at least some difference in the average times spent by the two groups in the mall.

Step-by-step explanation:

A null hypothesis is a hypothesis that states that there is no statistical significance between the two variables. Thus, It is usually the hypothesis that a researcher or experimenter will try to disprove or discredit. While an alternative hypothesis is one that states there is a statistically significant relationship between two variables.

Now, applying these definitions to the question, we can see that;

Null Hypothesis is;

H0; There is no difference in the average times spent by the two groups in the mall

While the alternative hypothesis is;

Ha; There is at least some difference in the average times spent by the two groups in the mall

Thus, correct answer is option B

You might be interested in
Part of the process for evaluating a video is
Hunter-Best [27]

Answer:

The Correct answer is D Taking notes on information in the video. Hope this helps! Good Luck! Have a good day!

Step-by-step explanation:

I took the test.

5 0
3 years ago
Read 2 more answers
Whats 521,742 rounded to the nearest thousand
n200080 [17]
The answer is 521 000
4 0
3 years ago
Read 2 more answers
A carnival operator keeps track of the results of a carnival game. To play the game, players try to knock three blocks off of a
musickatia [10]
What the hell ion get it
4 0
3 years ago
Last year, a French restaurant used 792,800 ounces of cream. This year, due to a menu
ser-zykov [4K]
The correct answer is a 15% decrease. Explanation (792,800 - 673,880) / 792,800
8 0
2 years ago
Rename 5/6 and 5/8 using the least common denominator.
Marina CMI [18]

Answer:

5/6 = 20/24

5/8 = 15/24

Step-by-step explanation:

These are the answers because:

1) First, the least common denominator is 24 because 8 x 3 is 24 and 6 x 4 is 24

2) Next, multiply the numerators with the same number you multiplied with the denominator

5 x 3 = 15

5 x 4 = 20

3) Therefore, the answers are:

5/6 = 20/24

5/8 = 15/24

Hope this helps!

6 0
3 years ago
Other questions:
  • Plz help me ............
    9·2 answers
  • Answer any problem and I will be happy <br> (30) pts
    8·1 answer
  • What is the number 2,305,012 written in expanded notation?
    11·2 answers
  • Identify the vertex of the Parabola Please help!!
    8·2 answers
  • Prices of a certain item have a distribution that is skewed to the left with outliers in the left tail. Which of the measures of
    14·1 answer
  • What is capacity of measurement
    15·1 answer
  • How many solutions does 0.5(x−3)=3x−2.5 have?
    7·1 answer
  • A factory employs 98 workers. Of these, 10 receive a wage of $150
    11·1 answer
  • How many three-letter "words" can be made from 5 letters "FGHIJ" if repetition of letters
    14·1 answer
  • lilla On a coordinate plane, point J is located at (-1, -2) and point K is located at (8, 10). What is the distance, in units fr
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!