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
ozzi
2 years ago
13

Given a sample mean difference of 23, a standard error of 4.2, and a critical t value of 2.262, what are the values for the conf

idence interval?
Mathematics
1 answer:
erastova [34]2 years ago
8 0

Answer: (13.4996, 32.5004)

Step-by-step explanation:

The confidence interval for mean difference is given by :-

(\overline{x}_1-\overline{x}_2)\pm t^*\times SE ,

where (\overline{x}_1-\overline{x}_2) = sample mean difference .

t^*= critical t value (two-tailed)

SE= Standard error.

Given : (\overline{x}_1-\overline{x}_2)=23

t^*=2.262

SE= 4.2

Now, the confidence interval for mean difference will be :-

23\pm (2.262)\times (4.2)\\\\= 23\pm9.5004\\\\=(23-9.5004,\ 23+9.5004)\\\\=(13.4996,\ 32.5004)

Hence, the required confidence interval : (13.4996, 32.5004)

You might be interested in
Mr. Davis divided his money in the ratio 4:6 between James and Brett. James got the smaller amount of $540. How much did Brett r
sattari [20]

Answer:

$810

LMK if you need an explanation.

3 0
2 years ago
Six less than 3/4 of a number is the same as the number. Find the number.
kap26 [50]

x - 6 =  \frac{3}{4} x \\  - 6 =  \frac{ - 1}{4} x \\ x = 24

5 0
3 years ago
PLEASE HELP ASAP ILL REALLY APPRECIATE IT
sesenic [268]

Answer:

see below

Step-by-step explanation:

2.5 = 2 5/10 = 250%

40% = .40 = 40/100 = 4/10 =2/5

220% = 220/100 = 2 20/100 = 2 2/10 = 2 1/5

1/4 = 25/100 = 25%

4% = 4/100 = .04

3 0
3 years ago
Read 2 more answers
Which of the diagrams correctly displays a→+b→=c→, using the parallelogram method?
adoni [48]

Answer:It’s. B

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Why lie about my free answers );
dimaraw [331]
I like your sketchers
3 0
3 years ago
Other questions:
  • F=G (m×M)/r^(2); solve for r
    10·1 answer
  • Divide 72 ft in the ratio 9:4:5
    5·2 answers
  • Plzzz help with this
    10·1 answer
  • What does it mean if your final exam grade is modeled by the function f(x) = 100 - 3.3x?
    10·2 answers
  • 20 POINTS AND BRAINLIEST FOR CORRECT ANSWER! A cone with height h and radius r has volume V = 13πr2h. If a certain cone with a h
    7·1 answer
  • An aquarium has the dimensions of 36 inches wide, 10 inches long and 9 inches high. It was filled with 7 inches of water. How ma
    14·1 answer
  • Sandeep says that the expression
    12·2 answers
  • Cheat with me on a test again ;)))
    12·2 answers
  • What is −1.64 as a mixed number in simplest form.
    15·1 answer
  • Claire tried to evaluate an expression step by step.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!