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
hoa [83]
4 years ago
13

A sample of 64 was taken from a population, with the mean of the sample being 43 and the standard deviation of the sample being

6. What is the 95% confidence interval for the mean of the population?
A. (42.25, 43.75)
B. (37.3, 48.7)
C. (41.5, 44.5)
D. (37, 49)
Mathematics
1 answer:
zzz [600]4 years ago
5 0

Answer:

C. (41.5, 44.5)

Step-by-step explanation:

Point estimate of population variance:

64(6²)/63

256/7

xbar +/- [z × sqrt(var/n)]

43 +/- [1.96 × sqrt(256/7 ÷ 64l]

43 +/- 1.481620735

[41.51837927 , 44.48162073]

You might be interested in
Write the equation in slope intercept form of the perpendicular bisector of a segment with endpoints of (2,5) and (4.9). ​
m_a_m_a [10]
The slope from (2,5) to (4,9) is 4/2 or just 2.
A perpendicular will have a gradient of -1/2
The midpoint is (3,7)
Therefore y=mx+c becomes 7=-1/2 x 3 + c
c = 7 + 3/2
The perpendicular bisector has the equation y = -1/2x + 17/2
4 0
3 years ago
What is the answer to What Do You Get if a Bunch of Bad Guys Fall in the Ocean?
inn [45]
Acrimewave is the answer.
8 0
4 years ago
Kim rode her bicycle 135 miles in 9 weeks, riding the same distance each week. Eric rode his bicycle 102 miles in 6 weeks, ridin
Juli2301 [7.4K]

Answer:

Eric rode 2 more miles per week than Kim rode.

Step-by-step explanation:

Find how many miles per week Kim rode by dividing the number of miles she rode by the number of weeks:

135/9

= 15

Find how many miles per week Eric rode:

102/6

= 17

So, Kim rode 15 miles per week and Eric rode 17 miles per week.

The answer is Eric rode 2 more miles per week than Kim rode.

4 0
3 years ago
Help.please answer asap...............
anygoal [31]

Answer:

-11 1/3 If I am wrong please forgive me

Step-by-step explanation:

7 0
3 years ago
What is the value of this expression?<br> (-8)<br> Enter your answer in the box.<br> (-8)^3
Mumz [18]

Answer:

-512

Step-by-step explanation:

(-8)³ is the same is -8·-8·-8 so -8 times -8 is 64 times -8 is -512

I hope this helps and please don't hesitate to ask if there is anything still unclear!

7 0
3 years ago
Other questions:
  • Can you please factor this x^8-7x^4+12
    9·1 answer
  • Whats 1+11111111111111111111111
    12·2 answers
  • (V+5)9 use distributive property to remove parentheses
    15·1 answer
  • Solve x2 - 8x + 3 = 0 by completing the square.
    10·1 answer
  • Select all the expressions
    6·2 answers
  • Can u help me with this question please
    8·1 answer
  • True or False? 2 ∗ 3 + 10 ÷ 2 = 8
    6·1 answer
  • 7<br> Find the AREA of the regular polygon. Il<br> (2 points)<br> 20<br> 18.8<br> 13.68
    15·1 answer
  • FREE BRAINLIST 6
    9·2 answers
  • 2<img src="https://tex.z-dn.net/?f=_%7B2%7D%20%5Cfrac%7B3%7D%7B4%7D" id="TexFormula1" title="_{2} \frac{3}{4}" alt="_{2} \frac{3
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!