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
iren2701 [21]
3 years ago
14

Based upon extensive data from a national high school educational testing program, the standard deviation of national test score

s for critical reading was found to be 115 points. If a sample of 500 students are given the test, what would be the standard error of the mean? (rounded to the nearest 100th)
Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
6 0

Answer:

The standard error of the mean is 10.11 points

Step-by-step explanation:

Standard error of mean = t×sd/√n

sd = 115 points, n = 500, degree of freedom = n-1 = 500-1 = 499, assuming a 95% confidence level, t-value corresponding to 499 degrees of freedom and 95% confidence level is 1.96501

Standard error of mean = 1.96501×115/√500 = 10.11 points (to the nearest 100th)

You might be interested in
The heights of american men aged 18 to 24 are approximately normally distributed with a mean of 68 inches and standard deviation
Rudik [331]
A normal distribution is symmetrical about the mean. Therefore half of all young men are shorter than 68 inches.
7 0
3 years ago
Read 2 more answers
Helpppp soon as possible please<br> 14) 4x - 4y= 12<br> -2x - 4y= 12
kolezko [41]
The answer is x equal 0 and y equal negative 3
3 0
3 years ago
A=2 b=3 c=4<br><br> 1) ab - c =<br> 2) 6c - 2b=<br> 3) a + b - c + 5 =<br> 4) 7c - 2a =
bekas [8.4K]

Step-by-step explanation:

1)ab-c

=2(3)-4

=6-4

=2

2)6c-2b

=6(4)-2(3)

=24-6

=18

3)a+b-c+5

=2+3-4+5

=10-4

=6

5)7c-2a

=7(4)-2(2)

=28-4

=24

7 0
4 years ago
Read 2 more answers
1234567791234556677889
Lapatulllka [165]
372819388338822814738288919147477483822 okay i guess
3 0
3 years ago
Read 2 more answers
After arianna completed some work, she figured she still had 78 21/100 pictures to paint. if she completed another 34 23/25 pict
dezoksy [38]

Subtract the number she completed from what she had left to paint originally.

The fractions have different denominators so first step is to rewrite the fractions with a common denominator.

23/25 can be rewritten as 92/100

Now you have 78 21/100 - 34 92/100

Because 21/100 is smaller than 92/100 subtract 1 whole number from 78 and rewrite 1 as 100/100 and add that to the fraction.

78 21/100 becomes 77 121/100

Now subtract :

77 121/100 - 34 92/100

77-34 = 43

And 121/100 - 92/100 = 29/100

Combine to get 43 and 29/100

3 0
3 years ago
Other questions:
  • When are fractions useful? When are ratios useful?
    6·1 answer
  • What is 1280 billion devided by 47.9%
    12·1 answer
  • The US courts are reviewing a case to see whether a work has been refused fairly. What is an example of something they might con
    12·1 answer
  • Which of the following equals cos 80°<br>A) sin 20°<br>B) sin 100°<br>c) sin 10°<br>D) sin 80°​
    11·1 answer
  • Flat screen tv cost $1,400 the tv is on sale 35% off what is the discounted price on the tv
    8·2 answers
  • Can someone help? I’m stuck
    5·1 answer
  • Form and solve an equation for x.<br> 6x +40<br> Х<br> 3x + 100
    11·1 answer
  • The graph below has the same shape as the graph of G(x) = x, but it is
    7·1 answer
  • PLS HELP QUICKKK its almost due
    8·1 answer
  • A fence is 8.5 feet tall. How many inches tall is it?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!