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
kaheart [24]
2 years ago
8

Use a t-distribution to answer this question. Assume the samples are random samples from distributions that are reasonably norma

lly distributed, and that a t-statistic will be used for inference about the difference in sample means. State the degrees of freedom used.
Find the proportion in a t-distribution less than −1.4 if the samples have sizes n1=30 and n2=40.

Enter the exact answer for the degrees of freedom and round your answer for the area to three decimal places.
Mathematics
1 answer:
Dimas [21]2 years ago
8 0

Using the t-distribution, it is found that the proportion in a t-distribution less than −1.4 if the samples have sizes n1=30 and n2=40 is of 0.083.

<h3>How to find a proportion in a t-distribution?</h3>

The proportion is found using a calculator, with three inputs:

  • The tail of the test, if it is left, right, or two-tailed.
  • The test statistic.
  • The amount of degrees of freedom.

In this problem, we have a left-tailed proportion, as we want the proportion that is less than a value, with test statistic t = -1.4 and 30 + 40 - 2 = 68 df, hence the proportion is of 0.083.

More can be learned about the t-distribution at brainly.com/question/16162795

#SPJ1

You might be interested in
Julie manages a franchise restaurant and is analyzing the tips left at her location. From corporate informational material, she
Korolek [52]

Answer:

$6.66 and $7.04

Please give me brainliest, I really need it.

3 0
3 years ago
Read 2 more answers
Help me what is X/5-3/7
yaroslaw [1]

Answer:

15/7 or 2.142

Step-by-step explanation:

x=3/7×5

x=15/7

3 0
3 years ago
If 3 quarts of paint are needed for 50 ft of fence, how many quarts are needed for 300 ft of fence?
Zina [86]

Answer:

18

Step-by-step explanation:

First, you would do a proportion

\frac{3}{50}=\frac{x}{300}

Then you would cross multiply, getting 50x=900.

After that, you would do 900/50, which is 18.

5 0
3 years ago
What are all the power of threes through 1000
algol13
1000= 10^3 -- ten to the third power

assuming you mean whole numbers,

graba calculator, figure out what
1^3, 2^3 3^3 ... 9^3 are
or
1x1x1
2x2x2
3x3x3
...
9x9x9
6 0
3 years ago
Transformation !! Photos up above!
dlinn [17]
360 brainliest? Have a nice day
7 0
3 years ago
Other questions:
  • If a segment has an endpoint at (3, 2) and the midpoint at (-1, 2), what are the coordinates of the other endpoint?
    8·2 answers
  • Mrs. Chu's famous peanut butter cookies call for 1 cup of peanut butter for every 1/2 of a cup of oil. Today, she wants to make
    11·1 answer
  • What is the value of f(x) when x = -3? <br> f(x)= -2x-3 <br> f(-3)=???
    7·2 answers
  • Find the zeros of the function.
    13·2 answers
  • What is an integer?
    12·2 answers
  • Simplify the product 7x (x + 4)
    11·2 answers
  • What is the value of x? 40,000 mg = 10x g. A.400 B.40 C.4 or D 0.4
    8·2 answers
  • Solve and check the following equation<br> -15=5(3q-10)-5q
    15·2 answers
  • I need help on this if anyone can help
    11·1 answer
  • What should be the first step to solve the equation?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!