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
juin [17]
3 years ago
12

Suppose that the pages per book in a library are normally distributed with an unknown mean and standard deviation. The book leng

ths of 39 randomly sampled books are used to estimate the mean of the population. What t-score should be used to find the 99% confidence interval for the population mean?
Mathematics
1 answer:
Elanso [62]3 years ago
6 0

Answer:

A t-score of 2.0244 should be used to find the 99% confidence interval for the population mean

Step-by-step explanation:

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 39 - 1 = 38

Now, we have to find a value of T, which is found looking at the t table, with 38 degrees of freedom(y-axis) and a confidence level of 0.99(t_{99}). So we have T = 2.0244.

A t-score of 2.0244 should be used to find the 99% confidence interval for the population mean

You might be interested in
If rybirens (which each have 9 flowers) and figilbuttons (which each have 7 flowers). he says to his friend, i count 87 plants a
RideAnS [48]
You can subtract 9 from the 713 value and trace until you get a multiple of 7 or vice versa.

It could be one of :
 
80 figilbuttons and 7 rybirens

or

14 rybirens and 73 figilbuttons
5 0
3 years ago
is it possible for a number to be rational number that is not an integer is not an integer but is a whole number?explain.
Lostsunrise [7]
Yes it is possible because integers start at one, and do not include negative numbers while whole numbers are any numbers that are not a fraction or decimal.
3 0
3 years ago
Ariela is selling tickets to a play. adult tickets cost $12.25 and children's tickets cost $8.75. the total amount of money she
Romashka [77]
12.25x + 8.75y > = 90 (thats greater then or equal) <== ur inequality
4 0
3 years ago
Read 2 more answers
Please Help! The graph of y=f(x) is shown below. What are all of the real solutions of f(x)=0? (Picture of graph included)
qwelly [4]

Answer:

(7, 0), (-8, 0), (0, 0)

Step-by-step explanation:

y = f(x) = 0

the real solutions are the ones that cross the x-axis because when a point is on the x-axis, its y coordinate will be 0.

=> (7, 0), (-8, 0), (0, 0)

6 0
3 years ago
Find the value of the variable if P is between J &amp; K. <br><br> JP = 2x ; PK = 7x ; JK = 27
Nana76 [90]
J ---- P --- K

JP = 2x
PK = 7x
JK = 27

2x + 7x = 27
9x = 27
x = 27/9
x = 3

The value of P is 3.

JP = 2x = 2(3) = 6
PK = 7x = 7(3) = 21

7 0
2 years ago
Other questions:
  • The function describes the volume of a right circular cylinder of height 3 ft and radius r feet. find the instantaneous rate of
    14·1 answer
  • How many four - digit numbers can be made from the numerals 7,6,5, and 3<br><br> 4<br> 12<br> 24
    6·2 answers
  • Which expression can be used to convert 5 meters per second to km per hour?
    12·1 answer
  • I need helpp plss ///:
    8·1 answer
  • 2) (6 pts) A surveyor has taken the measurements shown below. Find the distance<br> across the lake.
    13·1 answer
  • The system of equations has .
    10·2 answers
  • Find the focus.<br> x2 = 6y<br> A. (0, 3/2)<br> B. (0,6)<br> C. (0, -3/2)<br> D. (3/2,0)
    12·1 answer
  • A vertical parabola goes through (1,-2), (-3, 10), and (4, 31). Use matrices to
    9·1 answer
  • Need help please don't know this
    12·1 answer
  • Domain range function explained
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!