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
AVprozaik [17]
3 years ago
8

Researchers doing a study comparing time spent on social media and time spent on studying randomly sampled 200 students at a maj

or university. They found that students in the sample spent an average of 2.3 hours per day on social media and an average of 1.8 hours per day on studying. If all the students at the university in fact spent 2.2 hours per day on studying, with a standard deviation of 2 hours, and we find the probability of observing a sample mean of 1.8 hours studying has an extremely low probability, we say that observed time is: statistically wrong. statistically unlikely. statistically significant. statistically rare.
Mathematics
1 answer:
larisa [96]3 years ago
5 0
Dachshund know what is this man what do frog is making
You might be interested in
QUESTION 1 Name the type of transformation depicted by the picture. reflection rotation translation none of the above
nydimaria [60]
I would be happy to help but it seems there are no pictures attached to answer from. 
7 0
3 years ago
What is the square root of 28
GrogVix [38]

Answer:5. 291503

Step-by-step explanation:

√28

2√7

5. 291503

8 0
3 years ago
Question 9 20% of a particular brand of light bulbs fail in one year. What is the probability that three bulbs out of a random c
Delvig [45]

Answer:

The correct answer is 0.15

Step-by-step explanation:

According to the given scenario, the probability is as follows:

X\sim Bin (n,p)

Here

n = 8

p = 0.20 or 20%

Now this is a binomial probability distribution

P(X) = ^nC_x \times p^x \tmes (1 - p)^{n-x}\\\\P(3) = ^8C_3 \tims 0.20^3 \times (1 - 0.20)^5

= 0.15

Hence, the correct answer is 0.15

5 0
3 years ago
-4 - 3= Please help if you know the answer please explane??
Doss [256]

Answer:

-7

Step-by-step explanation:

there is nothing to explain but anyways

-4 - 3 = -7

8 0
4 years ago
Read 2 more answers
F(x)=x^5+(x+3)^2 which value completed the table
galben [10]

Answer:

three boys shared D 10,500.00 in the ratio 6:7:8.find the largest share.

3 0
2 years ago
Other questions:
  • Kylee and two of her friends are at a museum. They find two quarters and a dime on the ground. If Kylee and her friends share th
    14·1 answer
  • Describe the locations of 3 and -3 with respect to 0 on a number line.
    8·1 answer
  • Falcon 13 miles an hour more than 6 times the speed of human how fast is the fastest human
    11·1 answer
  • Between which two whole numbers does square root of 150 lie
    7·1 answer
  • I need to know what to do and the answer
    8·1 answer
  • What is the total price of a $40 item including 6.5% sales tax
    14·1 answer
  • Does any know this answer
    15·1 answer
  • Determine whether the statement is true or false. If it is false, rewrite it as a true statement. Data at the ratio level cannot
    12·1 answer
  • On a coordinate plane, which point lies on the x-axis?
    13·1 answer
  • 0.11616.......
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!