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
12345 [234]
3 years ago
11

A financial analyst wanted to estimate the mean annual return on mutual funds. A random sample of funds' returns shows an averag

e rate of 12%. If the population standard deviation is assumed to be 4%, the 95% confidence interval estimate for the annual return on all mutual funds is
A. 0.037773 to 0.202227
B. 3.7773% to 20.2227%
C. 59.98786% to 61.01214%
D. 51.7773% to 68.2227%
E. 10.988% to 13.012%
Mathematics
1 answer:
Feliz [49]3 years ago
3 0

A financial analyst wanted to estimate the mean annual return on mutual funds. A random sample of 60 funds' returns shows an average rate of 12%. If the population standard deviation is assumed to be 4%, the 95% confidence interval estimate for the annual return on all mutual funds is

A. 0.037773 to 0.202227

B. 3.7773% to 20.2227%

C. 59.98786% to 61.01214%

D. 51.7773% to 68.2227%

E. 10.988% to 13.012%

Answer: E. 10.988% to 13.012%

Step-by-step explanation:

Given;

Mean x= 12%

Standard deviation r = 4%

Number of samples tested n = 60

Confidence interval is 95%

Z' = t(0.025)= 1.96

Confidence interval = x +/- Z'(r/√n)

= 12% +/- 1.96(4%/√60)

= 12% +/- 0.01214%

Confidence interval= (10.988% to 13.012%)

You might be interested in
A. Brand A: $2.00 per meter; Brand B: $1.50 per meter; Brand A
erastova [34]

Answer:B

Step-by-step explanation:

3 0
3 years ago
Find the mean of the following: 158, 213, 107, 213, and 213. If needed, round your answer to the nearest tenth
Shalnov [3]

Answer:

180.8

Step-by-step explanation:

1. Add all the numbers

2. Divide the sum by 5

3. you get the answer

4 0
3 years ago
Read 2 more answers
I need help with 2 questions about circumference. ITS ALMOST DUE 20 POINTS thank you
aksik [14]

Answer:

This is against the honor code sry :(

Step-by-step explanation:

"Students are never allowed to post questions directly from tests, quizzes, and assessments, or copy answers found on Brainly during tests, quizzes, and assessments."

3 0
3 years ago
A pair of parallel lines is cut by a transversal, as shown below.
MA_775_DIABLO [31]

Answer:

x=45\degree

Step-by-step explanation:

In the diagram, the measure of the (x+30\degree) angle is equal to the 75\degree angle.

These two angles are alternate angles.

We therefore set up the following equation and solve for x.

x+30\degree =75\degree

\Rightarrow x =75\degree-30\degree

\Rightarrow x =45\degree

6 0
3 years ago
Read 2 more answers
Kaya devoted 2/5 of her study time to mathematics, 3/20 of her time to social studies, 1/3 of her time to chemistry and the rema
andrezito [222]

Answer:

  54 minutes

Step-by-step explanation:

The sum of fractions is ...

  2/5 + 3/20 + 1/3 = 11/20 +1/3 = (3·11 + 20·1)/(20·3) = 53/60

Then the 42 minutes devoted to English represents 1 - 53/60 = 7/60 of her study time.

Kaya's social studies time is 3/20 = 9/60 of her total, so the ratio of SS to Eng is ...

  SS : Eng = (9/60) : (7/60) = 9 : 7

When we multiply the numbers in this ratio by 6, we find ...

  SS : Eng = 54 : 42

Kaya spent 54 minutes studying social studies.

5 0
3 years ago
Other questions:
  • The cost to purchase a song from website 1 is $0.30 per song and a $5 membership fee. To purchase a song from website 2 there is
    14·1 answer
  • How many possibilities are there if you are creating a 4-digit password using the digits 0 through 9? You may repeat numbers.
    6·1 answer
  • Please help it would be appreciated!
    5·1 answer
  • What is the answer???
    5·1 answer
  • Which represents the square of the sum of a number and 4 is 36
    13·1 answer
  • Which pair of angles are corresponding angles?
    13·2 answers
  • If the sin 90° is 1, then the cos ________° = ________.
    8·1 answer
  • What is the interquartile range?<br><br> What is the range?
    12·2 answers
  • Ill give brainliest please answer right i need like 3 more questions
    14·2 answers
  • It looks easy i just dont know how to do it can someone help me out
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!