Question
An environmentalist wants to find out the fraction of oil tankers that have spills each month....
An environmentalist wants to find out the fraction of oil tankers that have spills each month. Step 2 of 2 : Suppose a sample of 432 tankers is drawn. Of these ships, 337 did not have spills. Using the data, construct the 85% confidence interval for the population proportion of oil tankers that have spills each month. Round your answers to three decimal places.
Homework Answers
Answer #1
The sample of 432 tankers is drawn. Of these ships, 337 did not have spills, so 432-337 = 95 have spills so the proportion of spills will; be:
The confidence interval is calculated as:
the Zc is critical Z score calculated at 85% confidence level computed using excel formula =NORM.S.INV(0.925) which results in Zc = 1.4395
so, now the confidence interval for population proportion is calculated as:
Not the answer you're looking for?
Similar Questions
An environmentalist wants to find out the fraction of oil tankers that have spills each month....
An environmentalist wants to find out the fraction of oil
tankers that have spills each month. Step 2 of 2 : Suppose a sample
of 712 tankers is drawn. Of these ships, 570 did not have spills.
Using the data, construct the 99% confidence interval for the
population proportion of oil tankers that have spills each month.
Round your answers to three decimal places.
An environmentalist wants to find out the fraction of oil tankers that have spills each month....
An environmentalist wants to find out the fraction of oil
tankers that have spills each month. Step 2 of 2 : Suppose a sample
of 370 tankers is drawn. Of these ships, 311 did not have spills.
Using the data, construct the 95% confidence interval for the
population proportion of oil tankers that have spills each month.
Round your answers to three decimal places.
An environmentalist wants to find out the fraction of oil tankers that have spills each month....
An environmentalist wants to find out the fraction of oil
tankers that have spills each month. Step 2 of 2 : Suppose a sample
of 281 281 tankers is drawn. Of these ships, 228 228 did not have
spills. Using the data, construct the 90% 90 % confidence interval
for the population proportion of oil tankers that have spills each
month. Round your answers to three decimal places.
An environmentalist wants to find out the fraction of oil tankers that have spills each month....
An environmentalist wants to find out the fraction of oil
tankers that have spills each month.
Step 1. Suppose a sample of 438 tankers is drawn. Of these
ships, 355 did not have spills. Using the data, estimate the
proportion of oil tankers that had spills. (Write your answer as a
fraction or a decimal number rounded to 3 decimal places) Answer::
______________
Step 2. Suppose a sample of 438 tankers is drawn. Of these
ships, 355 did not have...
An environmentalist wants to find out the fraction of oil tankers that have spills each month....
An environmentalist wants to find out the fraction of oil
tankers that have spills each month.
Step 1 of 2 :
Suppose a sample of 1453 tankers is drawn. Of these ships, 1018
did not have spills. Using the data, estimate the proportion of oil
tankers that had spills. Enter your answer as a fraction or a
decimal number rounded to three decimal places.
The state education commission wants to estimate the fraction of tenth grade students that have reading...
The state education commission wants to estimate the fraction of
tenth grade students that have reading skills at or below the
eighth grade level. Step 2 of 2: Suppose a sample of 310 tenth
graders is drawn. Of the students sampled, 46 read at or below the
eighth grade level. Using the data, construct the 85% confidence
interval for the population proportion of tenth graders reading at
or below the eighth grade level. Round your answers to three
decimal places.
The state education commission wants to estimate the fraction of tenth grade students that have reading...
The state education commission wants to estimate the fraction of
tenth grade students that have reading skills at or below the
eighth grade level.
Step 1 of 2:
Suppose a sample of 326 tenth graders is drawn. Of the students
sampled, 48 read at or below the eighth grade level. Using the
data, estimate the proportion of tenth graders reading at or below
the eighth grade level. Enter your answer as a fraction or a
decimal number rounded to three...
NASA is conducting an experiment to find out the fraction of people who black out at...
NASA is conducting an experiment to find out the fraction of
people who black out at G forces greater than 6. Step 2 of 2 :
Suppose a sample of 1373 people is drawn. Of these people, 576
passed out. Using the data, construct the 98% confidence interval
for the population proportion of people who black out at G forces
greater than 6. Round your answers to three decimal places.
NASA is conducting an experiment to find out the fraction of people who black out at...
NASA is conducting an
experiment to find out the fraction of people who black out at G
forces greater than 66.
Step 2 of 2:
Suppose a sample of
566 people is drawn. Of these people, 260 passed out. Using the
data, construct the 95% confidence interval for the population
proportion of people who black out at G forces greater than 6.
Round your answers to three decimal places.
Answer
Lower endpoint: Upper
endpoint:
The state education commission wants to estimate the fraction of tenth grade students that have reading...
The state education commission wants to estimate the fraction of
tenth grade students that have reading skills at or below the
eighth grade level. Step 2 of 2 : Suppose a sample of 313 tenth
graders is drawn. Of the students sampled, 235 read above the
eighth grade level. Using the data, construct the 80% confidence
interval for the population proportion of tenth graders reading at
or below the eighth grade level. Round your answers to three
decimal places.
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 13 minutes ago
asked 1 hour ago
asked 2 hours ago
asked 2 hours ago
asked 2 hours ago
asked 2 hours ago
asked 2 hours ago
asked 2 hours ago
asked 3 hours ago
asked 3 hours ago
asked 3 hours ago
asked 3 hours ago