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
Alexus [3.1K]
2 years ago
9

After a ham is cured it may be smoked to add flavor or to ensure it lasts longer. Typical grocery-store hams are smoked for a sh

ort period of time, whereas gourmet hams are usually smoked for at least one month. A random sample of 36 grocery-store hams was obtained, and the length of the smoking time was recorded for each. The mean was
hours. Assume σ = 8 hours.

a) What assumptions are required so that you can construct a confidence interval?
b) Find a 99% confidence interval for the for the mean amount of time a grocery-store

ham is smoked.
c) Interpret your answer in part b).
d) The precision required for someone in the deli who cooks the grocery store hams is a

margin of error (half-width) of 2 hours. How large a sample is necessary for this precision?
Mathematics
1 answer:
Elza [17]2 years ago
3 0

Answer:

107

Step-by-step explanation:

Given that after a ham is cured it may be smoked to add flavor or to ensure it lasts longer.

Let X be the smoking time . Then X is N(mu, 8)

a) The sample is drawn at random

b) The sample represents the population

c) Sample size is sufficient to represent the population

b)For 99% conf interval z critical is taken since population std dev is given

Z critical = 2.58

Hence confi interval = (\mu+/- 2.58*\frac{\sigma}{\sqrt{n} } \\=(\mu +/- 2.58\frac{8}{6} )\\= (\mu -3.44, \mu+3.44)

c) As sample sizes are large and samples are randomly drawn, we can be 99% confident that sample mean falls within this interval

d) If margin of error is only 2, then we must have

2.58*\frac{8}{\sqrt{n} } =2\\10.32=\sqrt{n} \\n=106.50\\n~107

You might be interested in
Which sentence below best explains the process of upwelling
Andrews [41]

Answer:

Upwelling is a process in which deep, cold water rises toward the surface. ... Upwelling occurs in the open ocean and along coastlines. The reverse process, called “downwelling,” also occurs when wind causes surface water to build up along a coastline and the surface water eventually sinks toward the bottom

7 0
3 years ago
Read 2 more answers
The consumer price index is___.(apex)
klio [65]
Measures change in price levels of market s

7 0
3 years ago
40.00 jeans 20% discount
Svetllana [295]
20(40)
\frac{20}{100} = 0.2
0.2(40) = 8

After price: $32.00
But, you save: $8

4 0
2 years ago
The numbers of inches of snow per month in Portland, Maine, for a period of twelve months, are:
Gnom [1K]
The range is 19-0=19 so therefore your answer is C.
The range is the largest number subtracted by the smallest number.
8 0
3 years ago
Read 2 more answers
Jacky baked some biscuits.he kept 3/7 of the biscuits in container A.5/8 of the remainder in container B and rest in container C
Colt1911 [192]
Let "b" represent the number of biscuits Jacky baked.
.. container A holds (3/7)b
.. container B holds (1 -3/7)*(5/8)b = (5/14)b
.. container C holds (1 -3/7 -5/14)b = (3/14)b = 168

Then
.. b = 168/(3/14) = 784

Jacky baked 784 biscuits.
6 0
3 years ago
Other questions:
  • Can you simplify -3(x - 2y)
    15·1 answer
  • Housing prices in a certain neighborhood average at $97.89 per square foot. If one house in this neighborhood is 1420 square fee
    10·2 answers
  • MARKING BRAINLIEST I NEED HELPPPPP ASAPPPPP
    10·1 answer
  • 22<br> O Rational<br> 0 Irrational<br> Is it rational or irrational
    8·2 answers
  • I will give brainliest
    13·1 answer
  • Kevin is responsible for delivering sacks of grains to a grocery shop on the tenth floor of a departmental store. Each sack weig
    13·1 answer
  • Use the order of operations to simplify 3/4+8(2.50-0.5).
    5·1 answer
  • Match the Mixed Number to the Improper Fraction
    12·2 answers
  • In a survey of 400 people, 65% sald they owned a dog. How many people own a dog?
    7·1 answer
  • What are the x and y-intercepts of the line described by the equation?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!