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
PolarNik [594]
3 years ago
12

A random sample of 100 college students is taken from the student body of a large university Assume that, in fact, a population

mean of 20 hours and a standard deviation of 15 hours describe the weekly study estimates for the entire student body. Therefore, the sampling distribution of the mean has a mean that:________.
a) approximates 20 hours.
b) equals 20 hours.
c) lies within a couple of hours of 20.
d) equals the one observed sample mean.
Mathematics
1 answer:
mixas84 [53]3 years ago
6 0

Answer:

b) equals 20 hours.

Step-by-step explanation:

The sampling distribution of means refers to the distribution of all the possible sample means, with a certain sample size (in this case, n=100) extracted from the population.

The sampling distribution of the means is equal to the population mean. That does not mean that every sample will result in a mean equal to the population, but that the population of sample means will have an average of 20 hours.

You might be interested in
There are 108 flights from an airport, 20 of which are longer than 3 hours.
Rainbow [258]

5/27 in  simplest form because 20 flights out of 108 are linger than three hours, 20/108. Simplify 20/108 to get 5/27!

5 0
3 years ago
Which expression is equivalent to 3(6m)+m<br> 3<br> 6<br> m<br> +<br> m<br> ?
svetlana [45]

Answer:

some Equivalent expressions to 3(6m)+m is;

18m+m

6(3m)+m

2(9m)+m

19m

Step-by-step explanation:

6 0
3 years ago
The product of a number and 8
Alex787 [66]

Answer:

8n

Step-by-step explanation:

The answer would be 8n because 8*n = 8n

5 0
3 years ago
SOLVE for x. log3 8 = x
Setler [38]
You are trying so solve
<span><span>3^x</span>=8</span>
and since 8 is not an integral power of x you need a calculator.
it is <span><span>ln(8)/</span><span>ln(3)</span></span>
or
<span><span><span>log(8)/</span><span>log(3)</span></span></span>
5 0
3 years ago
Hi w do you find c for standard normal distribution
siniylev [52]
You need to a table of the standard normal cumulative distribution 
Here is one:
https://math.ucalgary.ca/files/math/normal_cdf.pdf

the closest value I see is 0.85
5 0
3 years ago
Other questions:
  • The coordinates of pint Y are given. The midpoint of XY is (3,-5). Find the coordinates of point X.
    13·1 answer
  • The equation of a line?
    9·1 answer
  • What is the nth term rule of the linear sequence below 15, 7, -1, -9, -17
    9·2 answers
  • What is the answer to this math problem?
    6·2 answers
  • The table shows the heights that four people parachute from an airplane. What is the range of the heights? Write your answer as
    14·1 answer
  • How many wheels are on 27 cars?
    13·2 answers
  • The point T(-1, 4) is reflected over the line y = 3. What are the coordinates of the resulting point, T′?
    6·2 answers
  • What is the explicit rule for the arithmetic sequence shown in the graph?
    7·1 answer
  • Write the equation of a line that is BOTH PARALLEL and PERPENDICULAR
    8·1 answer
  • What numbers have the same value as 5% of 35?​
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!