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
hram777 [196]
3 years ago
5

Find the sample size required to achieve the given margin of error with SD = 51.02 and z - score = 1.96. Round your answer to th

e nearest whole number. margin of error = 2
Mathematics
1 answer:
coldgirl [10]3 years ago
3 0

Answer:

The sample size required is 2500.

Step-by-step explanation:

z-score:

In function of the margin of error M, the z-score is given by:

Z = \frac{M}{\frac{\sigma}{\sqrt{n}}} = \frac{M\sqrt{n}}{\sigma}

In this question, we have that:

\sigma = 51.02, M = 2, Z = 1.96

So

Z = \frac{M\sqrt{n}}{\sigma}

1.96 = \frac{2\sqrt{n}}{51.02}

2\sqrt{n} = 51.02*1.96

\sqrt{n} = \frac{51.02*1.96}{2}

(\sqrt{n})^2 = (\frac{51.02*1.96}{2})^2

n = 2500

The sample size required is 2500.

You might be interested in
mrs corner makes a venn diagram on the subjects her students want to take. what is the probability a student wants to music and
nikklg [1K]

Step-by-step explanation:

A famer wants to divide 8085 ha of grazing into 9 or 15 cramp of equal size

4 0
1 year ago
4/5 in simplist form
Alexus [3.1K]

Answer:

45=810=2025=2835=4050=140175...

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Ava is 9 years old. Rose is 11 time as old as ava. How old is rose?
balu736 [363]
99 years old due to multiplying 9 x 11

7 0
3 years ago
Read 2 more answers
A school principal wants to determine which type of speaker the students prefer to invite to an assembly for the entire student
Lady_Fox [76]
When it comes to sampling methods, random sampling is one of the most effective. The principal wants the results of his or her sample to be as fair as possible, so it is best to choose students randomly, and in a neutral environment. The mall is not a neutral environment because not all students have access to the mall, and even those who do are not guaranteed to provide accurate results. The same goes for a basketball game, and student council. Samples taken from these environments are likely to produce more bias. However, collecting a survey from every tenth student entering the school one morning is more likely to produce accurate results that are representative of the school population.
3 0
3 years ago
Read 2 more answers
Compare the values of the underlined digits
katrin [286]
Unfortunately I can not answer this question because there are no underlined digits in your question
7 0
3 years ago
Other questions:
  • 35 POINTS PLS HELP WITH MATH (I post this like 3 times so you can get extra points by answering it again ;-;)
    8·1 answer
  • If 12 gallons cost $36. How much would 8 gallons cost?
    7·2 answers
  • He graph shown represents the funds in Sasha's checking account for 16 days.
    10·2 answers
  • Mrs. Summer's third grade class is putting on a play. If she has 13 1/8 yards of fabric, and each student needs 7/8 of a yard fo
    14·2 answers
  • A gum ball machine has 22 red 18 white 10 blue and 23 green. What chances of pulling out a red
    14·1 answer
  • I need help on letter a and how to wright a true if then statement with the facts i have here
    14·1 answer
  • If the total operating cost for a 20-acre organic strawberry farm is $551,520, how many acres are on a farm with a total operati
    11·2 answers
  • Rita and Tina each make $11 an hour working as cashiers at a supermarket. Last week, Rita worked r hours while Tina worked t hou
    11·1 answer
  • Carl can wash 8 windows in an hour. How many windows can he was in 3 hours
    12·2 answers
  • Please help help help help help​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!