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
ddd [48]
2 years ago
11

Suppose that a study of elementary school students reports that the mean age at which children begin reading is 5.9 years with a

standard deviation of 0.9 years. Step 1 of 2 : If a sampling distribution is created using samples of the ages at which 69 children begin reading, what would be the mean of the sampling distribution of sample means
Mathematics
1 answer:
Bas_tet [7]2 years ago
3 0

Answer:

5.9 years.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean \mu = p and standard deviation s = \sqrt{\frac{p(1-p)}{n}}

In this question:

Mean of the population is \mu = 5.9

If a sampling distribution is created using samples of the ages at which 69 children begin reading, what would be the mean of the sampling distribution of sample means?

By the Central Limit Theorem, the same population mean, of 5.9 years.

You might be interested in
Paul's company rents cars to people who are at least 25 years old. Which graph best represents the possible ages of people who c
Talja [164]

Answer:

A number line with a closed circle on 25, with shading to the right.

Explanation:

A closed circle means "greater than or equal to" or "less than or equal to".

A open circle means "less than" or "greater than"

Therefore, since the question says: "who are at least 25 years old", a closed circle is the correct answer.

And says it says "at least 25 years old" it means that it shaded to the right, and that the circle is on the number 25.

4 0
2 years ago
Read 2 more answers
The Great Speedster roller coaster runs 3 trains every 10 minutes. At that rate, how many trains does the roller coaster run eve
Natasha2012 [34]
<span>Two cars run at constant speeds around a one-mile racetrack. If the cars circle the track in the same direction, the faster car passes the slower car every 10 minutes. If the cars circle the track in opposite directions, the cars meet every 30 seconds.</span>
6 0
3 years ago
jill is thinking of two numbers. they have the sum of 27 and a difference of 7. what are the two numbers?
bezimeni [28]
17 and 10/ 17+10=27 17-10=7
8 0
2 years ago
Read 2 more answers
The expression
ANEK [815]

Answer:

5

Step-by-step explanation:

15-5(p-6)

15-5(8-6)

15-5(2)

15-10

5

6 0
3 years ago
A radio is being discounted 30%. If the sale price of the radio is $29.82, what was the original price of the radio?
meriva

Answer: $42.60

Step-by-step explanation:

Original price: p

Discount: 30%

Sale price: 29.82

p x 0.7 = 29.82

p = 29.82/0.7 = 42.60

3 0
3 years ago
Other questions:
  • Please help with algebra2. Solving for A
    7·2 answers
  • last summer at camp fun okey there boys and girls the ratio is 5:7 if there were a total of 195 campers how many girls and boys
    15·1 answer
  • Solving for y in this problem x + y= -3
    12·1 answer
  • A system of linear equations for the variables x and y is shown.
    7·1 answer
  • 4 × (h ×5) = (4 × h) ×5
    8·1 answer
  • I lost my calculator and i really need the answer to this 2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20 please help
    9·1 answer
  • On a map, 1cm represents 2km. Find the actual distance between two towns if they are 20cm apart on the map.​
    14·2 answers
  • HELP ASAP
    8·1 answer
  • Helppppppppppppppppp
    8·1 answer
  • Need help with pre-cal
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!