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
wolverine [178]
3 years ago
8

The class sizes of elementary school classes in a public school district are normally distributed with an unknown population mea

n and standard deviation. A random sample of 27 classes is taken and results in a sample mean of 20 students and sample standard deviation of 6 students. The margin of error for a 98% confidence interval estimate for the population mean using the Student's t-distribution is 2.86. Find a 98% confidence interval estimate for the population mean using the Student's t-distribution.
Mathematics
1 answer:
weqwewe [10]3 years ago
8 0

Answer: (17.14,\ 22.86)

Step-by-step explanation:

The confidence interval estimate for the population mean is given by :-

\overline{x}\pm ME, where \overline{x} is the sample mean and ME  is the margin of error.

Given : Sample mean: \overline{x}=20

The margin of error for a 98% confidence interval estimate for the population mean using the Student's t-distribution : ME=2.86

Now, the confidence interval estimate for the population mean will be :-

20\pm2.86=(20-2.86,\ 20+2.86)=(17.14,\ 22.86)

Hence, the 98% confidence interval estimate for the population mean using the Student's t-distribution =  (17.14,\ 22.86)

You might be interested in
PLEAS HELP 2m · 2n would be the same as _____.<br><br> 4 mn <br>2 m + n <br>2 mn<br> 2 m - n
andriy [413]

4mn. You are multiplying them all together.

7 0
2 years ago
Read 2 more answers
Use the quadratic formula to solve 2x^2=5x+6. Leave your answer in radical form. Show all of your work!
Westkost [7]

Answer:

In radical from 169/50 , 177/200

Step-by-step explanation:

Given:

2x^2=5x+6\\\\2x^2-5x-6=0\\\\Where, a=2 , b=-5 , c=-6

Find:

Value of x

Computation:

Using quadratic formula:

\frac{-b\±\sqrt{b^2-4ac} }{2a}\\\\By\ putting\ all\ value\\\\ \frac{-(-5)\±\sqrt{(-5)^2-4(2)(-6)} }{2(2)}\\\\ \frac{5\±\sqrt{25+48} }{4}\\\\ \frac{5\±8.54 }{4}\\\\\frac{5+8.54 }{4},\frac{5-8.54 }{4} \\\\3.38 , 0.885

Value of x 3.38 , 0.885

In radical from 169/50 , 177/200

8 0
3 years ago
Y=(x+4)^3 what transformation will the following equation have from its parents ?
Contact [7]
Parent function: y =x3 ; shift
4 units to the left
4 0
2 years ago
Put these decimals in order starting with the smallest.
iVinArrow [24]

Answer:

8.008

8.018

8.088

8.808

8.88

<em><u>If this helped, please consider picking this answer as the Brainliest Answer. Thank you!</u></em>

3 0
2 years ago
Read 2 more answers
The boy to girl ratio in the class was 5 to 4 if there were 27 students how many boxes were there draw a ratio box for the probl
pogonyaev

Answer:

15 boys

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • Classify the following random variables as discrete or continuous:X: the number of automobile accidents per year in Virginia. Y
    9·1 answer
  • An average clementine is shaped like a sphere and has a diameter of 3.5 inches. What is the volume of the fruit? Use 3.14 for pi
    11·2 answers
  • © A boy has N800. He spends N160. What
    12·2 answers
  • I= ?<br> W= 3/4<br> H= 4<br><br> Volume= 4 1/2<br><br> An explanation would be nice
    15·1 answer
  • ( √2 - √3 )² =<br> a. 5 - 2√6<br> b. 5 - √6<br> c. 1 - 2√6<br> d. 1 - √2<br> e. 1
    13·1 answer
  • Someone please help I will give u 1¢
    9·1 answer
  • Write the equation of the line that passes through the points (1,-7)(1,−7) and (-6,-9)(−6,−9). Put your answer in fully reduced
    9·2 answers
  • What is the value of the y-coordinate of point A?
    8·1 answer
  • Can Anyone help me with 1-8
    5·1 answer
  • Please help! will mark brainly
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!