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
ella [17]
3 years ago
7

A nutrition laboratory wants to construct a 95% confidence interval for the mean sodium content of "reduced sodium" hot dogs. A

preliminary study of reduced sodium hot dogs gives a standard deviation of 25mg of sodium. How many hot dogs should the researchers sample in order for the width of their confidence interval to be no more than 10 mg?
Mathematics
1 answer:
tatuchka [14]3 years ago
6 0

Answer:

n > 96

Therefore, the number of samples should be more than 96 for the width of their confidence interval to be no more than 10mg

Step-by-step explanation:

Given;

Standard deviation r= 25mg

Width of confidence interval w= 10mg

Confidence interval of 95%

Margin of error E = w/2 = 10mg/2 = 5mg

Z at 95% = 1.96

Margin of error E = Z(r/√n)

n = (Z×r/E)^2

n = (1.96 × 25/5)^2

n = (9.8)^2

n = 96.04

n > 96

Therefore, the number of samples should be more than 96 for the width of their confidence interval to be no more than 10mg

You might be interested in
The standard deviation of the midterm scores at ucb for stats 2 is 50 points. the teacher takes a sample of 100 students' scores
Alborosie
<span>The measure standard deviation quantifies the amount of variation or dispersion of a set of data values.</span>The standard deviation is the square root of the variance.
The standard deviation in this case is 50/ sqrt(100)= 50/10=5.



6 0
2 years ago
A function is represented by the values in the table.
emmasim [6.3K]

Answer:

IS LINEAR

Step-by-step explanation:

3 0
2 years ago
Could somebody help me with this question please?
ELEN [110]
The answer would be 20. Because the whole angle would have to be 90 so you already have 30 so that leaves you with 60 which you divide by 3 and gives you 20
4 0
3 years ago
Read 2 more answers
A car traveled 63 miles on 3 gallon of gas. What proportion can you set up to determine how many miles, m, the car can travel on
kari74 [83]
63/3= 21
So 21 miles per gallon of gas
To find 7, you multiply it by 7
21*7= 147
147 miles on 7 gallons of gas
5 0
3 years ago
Read 2 more answers
What’s the missing leg length
kow [346]

Answer:

15

Step-by-step explanation:

pythag theorum

6 0
3 years ago
Read 2 more answers
Other questions:
  • What is 14 52/60 simplified to
    12·2 answers
  • On a blueprint, every 3 inches is equal to 4 feet. One of the walls of a bedroom is
    9·2 answers
  • From 11:50 a.m. to 12:40 p.m. is
    12·1 answer
  • A theater charges $9.50 for adults and $6 for children. Which expression shows the total cost of buying 3 adult tickets and 2 ch
    9·2 answers
  • Of the ice cream cones sold yesterday at Erin's Ice Cream Shop, 1/3 were chocolate and
    6·1 answer
  • The sports bar owner runs a regression to test whether there is a relationship between Red Sox away games and daily revenue. Whi
    10·1 answer
  • Anyone? i need help asap plzzz i’ll mark you as brainlist and like it
    15·2 answers
  • Find the missing side of right triangle, where c= 13 in and a= 5 in
    7·2 answers
  • Help and thx helppppppppppppp
    7·1 answer
  • Polynomial Basics
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!