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
muminat
3 years ago
5

In order to determine an interval for the mean of a population with unknown standard deviation a sample of 61 items is selected.

The mean of the sample is determined to be 23. The number of degrees of freedom for reading the t value is
a. 22
b. 23
c. 60
d. 61
Mathematics
1 answer:
HACTEHA [7]3 years ago
4 0
You always have to think for the right answer
You might be interested in
The area under the normal curve between the mean and a score for which z= - 1.20 is
lawyer [7]

Answer: e. 0.3849

Step-by-step explanation:

We know that the mean lies exactly at the middle of the normal curve .

The z-score of the mean value is 0.

Also According to the standard normal probability table, the probability value of z=0 is P(z<0)=0.5.

And the probability value of z=-1.20 is P(z<-1.2) =0.1150697.

Now, the  area under the normal curve between the mean and a score for which z= - 1.20 is  given by :-

P(z

Hence, the area under the normal curve between the mean and a score for which z= - 1.20 is 0.3849 .

7 0
3 years ago
This one please and thank you !
Makovka662 [10]

Answer:

B

Step-by-step explanation:

We know that in 8 minutes she weeded 40% or .4 of her garden.

5 0
3 years ago
If AD BD, which of the following relationships can be proved and why?
VLD [36.1K]

IfIf AD BD, the following relationships that can be proved and why is: D. ΔACD ΔBCD, because of SAS.

<h3>Relationship that can be proved if AD=BD</h3>

The relationship that can be proved is ΔACD ΔBCD, because of SAS.

The reason is that m<CDA=M<CDB=90°

CD=CD

AD=BD

Hence, ΔACD=ΔBCD because of SAS. SAS congruence can tend to be proved when the length of the two side correspond and when  the angle between the two side is equal.

Therefore the correct option is D.

Learn more about Relationship that can be proved if AD=BD here:brainly.com/question/16906407

#SPJ1

7 0
2 years ago
Which of the following polynomials is in standard form?
Allushta [10]

Answer:

running a two year contract is the best i have to do with my life in this world and it has a great way to go through the

5 0
3 years ago
Read 2 more answers
1. What number is 27% of 52?
Goshia [24]
14 or 14.04 if you want to be more specific
8 0
4 years ago
Read 2 more answers
Other questions:
  • Anyone know the answer to these?
    8·1 answer
  • The graph shows a proportional relationship between the variables Y and X. Explain how you know there is a proportional relation
    11·1 answer
  • The points (
    11·1 answer
  • Use (r,16) to solve y=2x-4
    14·1 answer
  • While Sylvia trains for a long distance race, she wants to maintain an average of 6 miles an hour. She made a graph so that she
    15·1 answer
  • What are ways do you use math.How would the day have been different if you couldn't do math.
    7·1 answer
  • Gerald drives his car 48 miles each day for 32 days. How many miles does he drive in total?
    8·2 answers
  • Find the shaded area, please help ty (Geometry)
    13·1 answer
  • Algebra Toles help pt 2!
    5·1 answer
  • Show me 2 line up and down are they parallelside by side on a graph
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!