STT 231: Exam 5 Questions and Answers | 2025
Update | 100% Correct-Galen College of Nursing.
Suppose that you select a random sample of people and ask for their politicalviewpoint and
whether or not they support a particular policy proposal. Supposethat 60% of liberals
support the proposal, compared to 35% of moderates and25% of conservatives. For which
sample size will this result provide strongerevidence that the three political groups do not
have the same populationproportions who support the proposal
Sample size of 200 for each group
Suppose a laboratory tested the amount (in milligrams) of cholesterol per egg ina random
sample of 30 chicken eggs in a poultry farm. For each of the following questions, indicate
the appropriate inference procedure
How old, on average, is a chicken egg in this farm?
i. z-interval for a proportion, 𝜋
ii. z-test for a proportion, 𝜋
iii. t-interval for a mean, 𝝁
iv. t-test for a mean, 𝜇
iii. t-interval for a mean, 𝝁
Suppose a laboratory tested the amount (in milligrams) of cholesterol per egg ina random
sample of 30 chicken eggs in a poultry farm. For each of the following questions, indicate
the appropriate inference procedure
, Do 75% of chicken eggs in this farm contain less than 230 milligrams of cholesterol?
i. z-interval for a proportion, 𝜋
ii. z-test for a proportion, 𝝅
iii. t-interval for a mean, 𝜇
iv. t-test for a mean, 𝜇
ii. z-test for a proportion, 𝝅
Suppose a laboratory tested the amount (in milligrams) of cholesterol per egg ina random
sample of 30 chicken eggs in a poultry farm. For each of the following questions, indicate
the appropriate inference procedure
What percentage of chicken eggs in this farm contain fewer than 235milligrams of
cholesterol?
i. z-interval for a proportion, 𝝅
ii. z-test for a proportion, 𝜋
iii. t-interval for a mean, 𝜇
iv. t-test for a mean, 𝜇
i. z-interval for a proportion, 𝝅
Suppose a laboratory tested the amount (in milligrams) of cholesterol per egg ina random
sample of 30 chicken eggs in a poultry farm. For each of the following questions, indicate
the appropriate inference procedure
How much cholesterol, on average, is contained in a chicken egg fromthis farm?
Update | 100% Correct-Galen College of Nursing.
Suppose that you select a random sample of people and ask for their politicalviewpoint and
whether or not they support a particular policy proposal. Supposethat 60% of liberals
support the proposal, compared to 35% of moderates and25% of conservatives. For which
sample size will this result provide strongerevidence that the three political groups do not
have the same populationproportions who support the proposal
Sample size of 200 for each group
Suppose a laboratory tested the amount (in milligrams) of cholesterol per egg ina random
sample of 30 chicken eggs in a poultry farm. For each of the following questions, indicate
the appropriate inference procedure
How old, on average, is a chicken egg in this farm?
i. z-interval for a proportion, 𝜋
ii. z-test for a proportion, 𝜋
iii. t-interval for a mean, 𝝁
iv. t-test for a mean, 𝜇
iii. t-interval for a mean, 𝝁
Suppose a laboratory tested the amount (in milligrams) of cholesterol per egg ina random
sample of 30 chicken eggs in a poultry farm. For each of the following questions, indicate
the appropriate inference procedure
, Do 75% of chicken eggs in this farm contain less than 230 milligrams of cholesterol?
i. z-interval for a proportion, 𝜋
ii. z-test for a proportion, 𝝅
iii. t-interval for a mean, 𝜇
iv. t-test for a mean, 𝜇
ii. z-test for a proportion, 𝝅
Suppose a laboratory tested the amount (in milligrams) of cholesterol per egg ina random
sample of 30 chicken eggs in a poultry farm. For each of the following questions, indicate
the appropriate inference procedure
What percentage of chicken eggs in this farm contain fewer than 235milligrams of
cholesterol?
i. z-interval for a proportion, 𝝅
ii. z-test for a proportion, 𝜋
iii. t-interval for a mean, 𝜇
iv. t-test for a mean, 𝜇
i. z-interval for a proportion, 𝝅
Suppose a laboratory tested the amount (in milligrams) of cholesterol per egg ina random
sample of 30 chicken eggs in a poultry farm. For each of the following questions, indicate
the appropriate inference procedure
How much cholesterol, on average, is contained in a chicken egg fromthis farm?
