A researcher wants to estimate the proportion of the population which possesses a given characteristic. A...
A researcher wants to estimate the proportion of the population which possesses a given characteristic. A random sample of size 1800 is taken resulting in 450 items which possess the characteristic. The point estimate for this population proportion is _______.
Homework Answers
Add Answer to:
A researcher wants to estimate the proportion of the population
which possesses a given characteristic. A...
A researcher wants to estimate the proportion of a population which possesses a given characteristic. A...
A researcher wants to estimate the proportion of a population which possesses a given characteristic. A random sample of size 200 is taken and 30% of the sample possesses the characteristic. The 90% confidence interval to estimate the population proportion is _______.
UTVU 4. If a researcher wants to estimate a population proportion to be within 4 percentage...
UTVU 4. If a researcher wants to estimate a population proportion to be within 4 percentage points with a 95% confidence if she uses the estimate from a recent study that showed its value to be 85%, what size sample should she obtain?
A market researcher wants to conduct a survey to estimate the population proportion who prefer Coca-Cola...
A market researcher wants to conduct a survey to estimate the population proportion who prefer Coca-Cola to Pepsi. Before conducting the survey, the researcher wants to choose a sample size so that the half width of the 99% confidence interval is no more than 2%, regardless what he will find. What is the required sample size? Hints: recall that we only deal with "large n" population proportion questions in the class, so use the Z distribution. Also recall that the...
A market researcher wants to conduct a survey to estimate the population proportion who prefer Coca-Cola...
A market researcher wants to conduct a survey to estimate the population proportion who prefer Coca-Cola to Pepsi. Before conducting the survey, the researcher wants to choose a sample size so that the half width of the 99% confidence interval is no more than 2%, regardless what he will find. What is the required sample size? Hints: recall that we only deal with "large n" population proportion questions in the class, so use the Z distribution. Also recall that the...
A researcher in campaign finance law wants to estimate the proportion of elementary, middle, and high...
A researcher in campaign finance law wants to estimate the proportion of elementary, middle, and high school teachers who contributed to a candidate during a recent election cycle. Given that no prior estimate of the population proportion is available, what is the minimum sample size such that the margin of error is no more than 0.03 for a 95% confidence interval?
A researcher wants to create a 90% confidence interval for the population proportion, with the margin...
A researcher wants to create a 90% confidence interval for the population proportion, with the margin of error of 3%. She has no idea what the population proportion is and she cannot take a trial sample. Calculate the required sample size.
A researcher wishes to estimate, with 99% confidence, the population proportion of a) No preliminary estimate...
A researcher wishes to estimate, with 99% confidence, the population proportion of a) No preliminary estimate is available Find the minimum b i F ind the minimum sapi·sue needed using a prior study that found that 32% of the respondents said they think their president c) Compare the results from parts (a) and (b) who think the president of their country can control the price of gasoline Her estimate must be accurate within 4% ofthe tw proportio control the price...
Determine the point estimate of the population proportion, the margin of error for the following confidence...
Determine the point estimate of the population proportion, the margin of error for the following confidence interval and the individuals in the sample with the specified characteristic, X. for the sample size provided. Lower bound = 0.146, upper bound= 0.634 n=1000 Point estimate of the population proportion=0.390 margin or error = 0.244 the number of individuals in the sample with the specified characteristic is? (round to the nearest integer as needed)
is pos5100 n= by A researcher wishes to estimate with 90% confidence, the population proportion of...
is pos5100 n= by A researcher wishes to estimate with 90% confidence, the population proportion of adults who support labeling logislation for genetically modified organisms (CMOS) Her estimate must be accurate within 6% of the true proportion io (a) No preliminary estimate is available. Find the minimum sample size needed. (b) Find the minimum sample size needed, using a prior study that found that 73% of the respondents said they support labeling legislation for GMOs (c) Compare the results from...
A researcher wishes to estimate, with 99% confidence, the population proportion of adults who say chocolate...
A researcher wishes to estimate, with 99% confidence, the population proportion of adults who say chocolate is their favorite ice cream flavor. Her estimate must be accurate within two% of the population proportion. (a) No preliminary estimate is available. Find the minimum sample size needed. (b) Find the minimum sample size needed, using a prior study that found that 44% of the respondents said their favorite flavor of ice cream is chocolate. (c) Compare the results from parts (a) and...
UTVU 4. If a researcher wants to estimate a population proportion to be within 4 percentage points with a 95% confidence if she uses the estimate from a recent study that showed its value to be 85%, what size sample should she obtain?
A researcher wishes to estimate, with 99% confidence, the population proportion of a) No preliminary estimate is available Find the minimum b i F ind the minimum sapi·sue needed using a prior study that found that 32% of the respondents said they think their president c) Compare the results from parts (a) and (b) who think the president of their country can control the price of gasoline Her estimate must be accurate within 4% ofthe tw proportio control the price...
is pos5100 n= by A researcher wishes to estimate with 90% confidence, the population proportion of adults who support labeling logislation for genetically modified organisms (CMOS) Her estimate must be accurate within 6% of the true proportion io (a) No preliminary estimate is available. Find the minimum sample size needed. (b) Find the minimum sample size needed, using a prior study that found that 73% of the respondents said they support labeling legislation for GMOs (c) Compare the results from...
Most questions answered within 3 hours.
-
For a 2-Level design, with 8 factors, a recommended screening
design model is:
a. Taguchi L12...
asked 5 minutes ago -
If domestic savings are insufficient to finance domestic private
investment and exports are greater than imports,...
asked 11 minutes ago -
Q.4.
Use the format in Exhibit 9-1 to compute the ending LIFO
inventory and cost of...
asked 17 minutes ago -
Discuss the different receiving and dispatch equipment required
for uploading and loading different types of material...
asked 21 minutes ago -
Which of the following is true for simultaneous testing?
a. Net specificity is greater than the...
asked 25 minutes ago -
Discuss the importance of homologous recombination and
transposition in natural horizontal gene transfer and evolution. Be...
asked 29 minutes ago -
Brittle material has the properties Sut = 30 kpsi and Suc = 90
kpsi. Using the...
asked 28 minutes ago -
*
write about Plastic recycling statistics ( Plastic recycling rate )
last two years , i...
asked 27 minutes ago -
The activation energy for a given reaction is 50.3 kJ/mol. If
the rate constant for the...
asked 1 hour ago -
An entomologist discovers a dung beetle rolling a ball of dung
along the ground, and decides...
asked 3 hours ago -
Humans have used horses for transportation for millions of
years. Therefore, they will use horses for...
asked 4 hours ago -
The following are the Jensen Corporation's unit costs of making
and selling an item at a...
asked 5 hours ago