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Sample Size Estimation
Page 2
Questions (82)
A researcher is interested in
estimating the average salary of teachers in a large urban school district. She wants to be 95%
4 answers
asked by
Anonymous
878 views
The estimate of the population proportion is to be within plus or minus 0.06%, with a 99% level of confidence. The best estimate
1 answer
asked by
Tiffany
881 views
An admissions director wants to estimate the mean age of all students enrolled at a college. The estimate must be within one
1 answer
asked by
badel
814 views
An economist wants to estimate the mean income for the first year of work for college
graduates who majored in biology. How many
2 answers
asked by
Panther
843 views
A researcher wishes to estimate the mean weekly wage of the several hundreds of workers employed
by a certain firm within
2 answers
asked by
katie
753 views
Suppose that a researcher is interested in estimating the mean systolic blood pressure, , of executives of major corporations.
1 answer
asked by
RILEY
727 views
Random samples of size n are selected from a normal population whose standard deviation is know to be 2. Suppose you want 90% of
1 answer
asked by
joe
741 views
It is known that the standard deviation for the number of minutes women spend applying makeup everyday is 17 minutes if you want
2 answers
asked by
Julio
719 views
Use the margin of error E = $10, confidence level of 99%, and ó = $40 to find the minimum sample size needed to estimate an
2 answers
asked by
Jessica
700 views
A survey is being planned to determine the mean amount of time corporation executives watch television. A pilot survey indicated
3 answers
asked by
Nathalia
694 views
If you have no preliminary estimate for p, how many business phone calls should you include in a random sample to be 98% sure
1 answer
asked by
Anonymous
677 views
A study is being planned to estimate the mean number of semester hours taken by students at a college. The population standard
1 answer
asked by
Jasmine
676 views
A researcher wishes to estimate the mean amount of money spent per month on food by households in a certain neighborhood. She
1 answer
asked by
MARY
676 views
A researcher is interested in estimating the average salary of Police officers in a large city. she want to be 95% confident
2 answers
asked by
rowlene
667 views
The table I have is:
Color of Candy Frequency Proportion (as a fraction and decimal) Percentage Red 13 13/100 or .13 13% Orange
1 answer
asked by
Destiny Park
635 views
You are sampling from a population with a known standard deviation of 20 and want to construct a 95% confidence interval with a
2 answers
asked by
Anonymous
564 views
2. An investigator wants to estimate caffeine consumption in high school students. How many students would be required to
2 answers
asked by
bobbie ann johansen
576 views
A doctor at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she
2 answers
asked by
jose
596 views
In a study to estimate a population mean, i start with a sample size 10 and calculate the 95% confidence interval. Suppose i am
2 answers
asked by
Zodra
540 views
Find the minimum sample size needed to estimate the population proportion if the margin of error is 0.07 confidence level is 95%
2 answers
asked by
Leslie667
567 views
A government survey conducted to estimate the mean of houses in a metropolitan area is designed to have a margin of error of
2 answers
asked by
Erma
522 views
A sociologist is interested in the proportion of people that would attend a fund raiser if the had to pay to enter the event.
2 answers
asked by
Kelly
526 views
If a major Internet store wants to estimate the percentage of adult Internet shoppers in order to determine the maximum impact
2 answers
asked by
Trish R
549 views
Find the minimum sample size needed to estimate the population proportion if the margin of error is 0.07 confidence level is 95%
2 answers
asked by
Leslie667
534 views
How large a sample should be taken if the population mean is to be estimated with 90% confidence to within $75? The population
1 answer
asked by
Megan
509 views
In order to estimate the mean amount of time computer users spend on the internet each month, how many computer users must be
2 answers
asked by
John
493 views
A government survey conducted to estimate the mean price of houses in a metropolitan area is designed to have a margin of error
1 answer
asked by
jennifer
483 views
One of the problems with a study such as this one is the small size of the samples. If you wanted to
estimate the proportion of a
1 answer
asked by
bECKY
460 views
A 90% confidence interval for a population mean based on 144 observations is computed to be (2.7,3.4). How many observations
1 answer
asked by
Prakash
464 views
A pilot study has revealed a sample standard deviation of 16 for age of people in the work force. How large a sample must be
3 answers
asked by
Sally
447 views
Nielsen Media Research wants to estimate the mean amount of time (in min) that full-time college students spend watching
1 answer
asked by
Nicole
440 views
A random sample of 100 voters is taken to estimate the proportion of a state's electorate in favor of increasing the gasoline
1 answer
asked anonymously
29 views
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Parent Categories (20)
Confidence Interval
Confidence intervals
Estimation
Experimental Design
Inferential Statistics
Power Analysis
Probability
Probability and Sampling
Probability Sampling
Research Methods
Sampling
Sampling and Confidence Intervals
Sampling and Estimation
Sampling and Sampling Distributions
Sampling Methods
Sampling Techniques
Statistical Inference
Statistics
Statistics and Research
Surveys