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
LenaWriter [7]
3 years ago
13

People were polled on how many books they read the previous year. How many subjects are needed to estimate the number of books r

ead the previous year within one book with 99​% ​confidence? Initial survey results indicate that sigmaequals12.4 books.
Mathematics
1 answer:
Dmitry_Shevchenko [17]3 years ago
8 0

n = [z*s/E]^2

n = [2.5758*14.1/1]^2 = 1320 (rounded up)

You might be interested in
Find the length of the missing side. the triangle not drawn to scale. (Image attached)
3241004551 [841]

Answer: 8

Step-by-step explanation:

 The triangle shown in the image attached is a right triangle.

Therefore, to calculate the missing lenght of the triangle you can apply the Pythagorean Theorem, which is shown below:

a^2=b^2+c^2

Where <em>a</em> is the hypotenuse and <em>b</em> and <em>c</em> are the legs.

The problem gives you the value of the hypotenuse and the value of one leg. Therefore, you must solve for the other leg from a^2=b^2+c^2, as following:

17^2=15^2+c^2\\c=\sqrt{17^2-15^2}\\c=8

Therefore, the lenght of the missing side is: 8

6 0
3 years ago
Read 2 more answers
Math please help! Solve for x.
S_A_V [24]
I think the answer should be
x \geqslant 2
7 0
3 years ago
Please help me solve this problem with step by step explanation.​
Kisachek [45]

Answer:

Im not rally sure but maybe 5.71 , here is my explanation :

Step-by-step explanation:

Tan 55 =x/4

tan 55 = 1/42814

1/42814 = x /4

×=5.712592027 .

3 0
3 years ago
Cindi deposited $300 at 7.5% simple interest rate. How much interest will she earn after 5 years?
pav-90 [236]

Answer:

$431

Step-by-step explanation:

using the formula P(1+r/100)^n,

we can substitute the P with $300,

substitute the r with 7.5%,

and substitute the n with 5.

8 0
2 years ago
An algebraic equation is an equation that includes:
MrRissso [65]

Answer:

ç

Step-by-step explanation:

fufujphgfhjunkksbkbbdkdbkdldbdjdbdkdjjdkdmdljdbdivdjbdkd

5 0
3 years ago
Read 2 more answers
Other questions:
  • Since Neil Armstrong was the first person to walk on the. moon, the contrapositive is
    8·1 answer
  • The equation shown is used to find the volume of a cylinder, V, where r is the radius, and h is the height.
    12·1 answer
  • Which picture frame has an area of 54 square units
    12·1 answer
  • Simplify the expression ​
    13·1 answer
  • What percent of the surface area of the ottoman is green not including the bottom .The radius of the ottoman is 22 in and the cu
    11·1 answer
  • What is the anwser pls and thanks
    13·2 answers
  • I have to factor polynomials by grouping
    10·1 answer
  • Help plz will give brainliest
    10·2 answers
  • Given that
    11·1 answer
  • The average grade for an exam is 74, and the standard deviation is 7. The grades are curved to follow a normal distribution.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!