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
Veronika [31]
3 years ago
14

What is the value of the t score for a 99% confidence interval if we take a sample of size 22?

Mathematics
1 answer:
Elanso [62]3 years ago
5 0

Answer: 2.831

Step-by-step explanation:

As per given , we have

sample size : n= 22

Degree of freedom = n-1 = 22-1=21

Significance level for 99% confidence interval = \dfrac{1-0.99}{2}=0.005

Using student's t-value table, we have

t_{0.005,\ 21}=2.831

Hence, the  t score for a 99% confidence interval if we take a sample of size 22= 2.831

You might be interested in
Anna wants to take fitness classes. She compares two gyms to determine which would be the best deal for her. Fit Fast charges a
lutik1710 [3]

The number of classes Anna can take so the total cost for the month will be the same is 5.

The monthly cost would be  $37.50.

<h3>When would the total cost be the same?</h3>

When the monthly cost is equal, both equations would be equal: 7.5x = 5.5x + 10

In order to determine the value of x, take the following steps:

  • Combine similar terms: 7.5x - 5.5x = 10
  • Add similar terms: 2x = 10
  • Divide both sides by 2 : 10 /2 = 5

Monthly cost when the cost is the same: 7.5 x 5 = $37.50

To learn more about cost, please check: brainly.com/question/25711114

#SPJ1

7 0
1 year ago
Three fifths of the children in a school are boys. 7/8 of the girls in the school are right-handed. What fraction of the childre
Kaylis [27]

Answer:

To find the answer we only need to know,

Total no.of girls and Total no.of right handed girls.

So,

Total no.of right handed girls = 7/8

Total no.of girls                        = 8/8 (as given in question)

Total no.of left handed girls is,

(Fraction of total no.of girls) - (Fraction of total no.of left handed girls)

= 8/8 - 7/8

= 1/8

∴ 1/8 of the girls in the school are left handed.

7 0
3 years ago
On a unit circle, the vertical distance from the x-axis to a point on the perimeter of the circle is twice the horizontal distan
zalisa [80]

Answer:

(2√5)/5

Explanation:

CHECK THE ATTACHMENT BELOW FOR DETAILED EXPLATION

From the question we can deduced that the vertical distance from the x-axis to a point on the perimeter of the circle is twice the horizontal distance, we can say that the y-coordinate, is twice of the horizontal, then let call the horizontal "y", the vertical would be 2y.

from the attachment the question on the unit circle is interpreted using a figure,then, hypotenuse was first calculated

4 0
2 years ago
2. Lamar purchases comic books at garage
Otrada [13]

<u>Answer:</u>

Lamar will charge\$7 to the comic dealer for a comic book.

<u>Solution:</u>

It is given that lamar purchases a comic book for \$4. He then marks up the price of a comic book by 75\% which means he increases the price of the book by 75\% and then sells it to the comic dealer.

We have to find out how much will he charge the comic book dealer.

New price of the book after lamar marks up the price is given by

New price =  \$4 + \frac{75}{100} \times \$4

=\$4 + \$3= \$7

Thus, lamar will charge \$7 to the comic dealer for a comic book.

4 0
3 years ago
Can you tell me the answer and explanation of this problem
Lyrx [107]

Answer:

Step-by-step explanation:

The Beg balance means what she was having initially =$154.90

The pay check and deposit are credits on her account so they were added.

The wig, shoes and makeup she bought were debits, so they were subtracted

Closing balance is the amount left after the debits have been subtracted from the credits

3 0
3 years ago
Other questions:
  • The day after Halloween candy was marked down 40% which expression represents the new retail price
    14·1 answer
  • The product of what number and 7 is less than 49?
    14·1 answer
  • What is the value of 7z^2 + 4 x 3w when w= 8 and z= -3
    14·2 answers
  • What is the solution to 4w=2/3
    13·2 answers
  • PLEASE HELP
    6·1 answer
  • Jessie says to round 763,400 to the nearest ten thousand he will round to 770,000 Is he right ?
    5·2 answers
  • HELP PLEASE!!Which of the following is an asymptote for the graph below?
    10·1 answer
  • Graph f(x) = -|x-3| - 6
    15·1 answer
  • A dealership pays $580 for each electronic unit and sells it for $940. What is the percent markup in the price of each unit
    9·1 answer
  • Which table represents a function? A 2-column table with 4 rows. The first column is labeled x with entries negative 3, 0, negat
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!