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
ICE Princess25 [194]
3 years ago
10

A survey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet,

phone, etc.).
Based on the survey’s sample mean, which value could be the population mean?

2.3 hours
27.4 hours
75.3 hours
41.5 hours
Mathematics
1 answer:
lapo4ka [179]3 years ago
3 0

Answer: 27.4 hours

Step-by-step explanation:

According to the given statement "A survey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, etc.)."

Since the word average is synonym of word mean.

Therefore, the sample mean must have the nearest value to the given average.

From the given options 27.4 is the nearest value to the average of 258.6.

Hence, the population mean = 27.4 hours.

You might be interested in
Due in 5 mins!! FIND THE MISSING LENGTHS!!!!!
meriva
Since the shape is a square the sides are equal. Then we need to find x such that x * x = 169.
Sqrt(169) = 13
So x = 13
8 0
3 years ago
The GFC of 84 and 56 is ?
arsen [322]

Answer:

28

What is the GFC of 56 and 84? The gcf of 56 and 84 is 28.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Using traditional methods, it takes 9.5 hours to receive a basic flying license. A new license training method using Computer Ai
Aleonysh [2.5K]

Answer:

Step-by-step explanation:

Null hypothesis: u = 9.5hrs

Alternative: u =/ 9.5hrs

Using the t test

t = x-u/sd/√n

Where x is 10hrs, u is 9.5, sd is 1.6 and n is 15

t = 10-9.5 / (1.6/√15)

t = 0.5 / (0.4131)

t = 1.21

In order to make a conclusion, we have to find the p value at a significance level lot 0.1. The p value is 0.2263 which is greater than 0.1. This, we will fail to reject the null hypothesis and conclude that there is not enough statistical evidence to prove that the technique performs differently than the traditional method.

6 0
3 years ago
The volume of a prism is the base (B) times the length of its height (H). Which of the following is the formula for the volume o
lesya [120]

V=Bh

Volume =base ×height

7 0
3 years ago
Read 2 more answers
a triangle poster is twice as long as its height. a rectangular banner is 3 inches longer than its width. both the poster and th
Step2247 [10]

davqueeenwillk will know

8 0
3 years ago
Other questions:
  • Susie is thinking about changing her auto insurance policy at Fret-No-More Auto Insurance. Her current policy includes the follo
    7·2 answers
  • How many halves are in the following<br> 12, 10, 13, 15,8 and 5
    5·1 answer
  • The​ _______ represents the expected proportion of intervals that will contain the parameter if a large number of different samp
    15·1 answer
  • Please help! This is timed
    14·2 answers
  • The amount of time it takes p people to paint d doors varies directly with the number of doors inversely with the number of peop
    9·2 answers
  • Mrs. Potter divides the Grade 8 class of 21 students into few equal groups. The number of
    15·1 answer
  • Three groups of a number plus two.
    6·1 answer
  • If JK is tangent to circle L, find x​
    15·1 answer
  • Please explain and help me with this question.
    6·1 answer
  • Help I’m not sure if this is correct number 4
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!