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14. Bank of America wishes to estimate the proportion of cash withdrawals that exceed $50 at...
Step by step please A researcher wishes to estimate with 95% confidence the proportion of people...
Step by step please A researcher wishes to estimate with 95% confidence the proportion of people that own home computers. No previous study was available for a proportion estimate. The researcher wants to be accurate within 2% of the true proportion. How large of a sample is necessary? *hint: when no proportion estimate is available, we use p-hat = .50
answer is not 194 A restuarant would like to estimate the proportion of tips that exceed...
answer is not 194
A
restuarant would like to estimate the proportion of tips that
exceed 18% of its dinner bills. Without any knowledge of the
population proportion, determine the sample size needed to
construct a 97% confidence interval with a margin of error of no
more than 6% to estimate the proportion.
A
restuarant would like to estimate the proportion of tips that
exceed 18% of its dinner bills. Without any knowledge of the
population proportion, determine the sample...
A restaurant would like to estimate the proportion of tips that exceed 18% of its dinner...
A restaurant would like to estimate the proportion of tips that exceed 18% of its dinner bills. Without any knowledge of the no more than 6% to estimate the proportion The sample size needed is (Round up to the nearest integer.) my knowledge of the population proportion, determine the sample size needed to construct a 96% confidence interval with a margin of error of
A researcher at a major hospital wishes to estimate the proportion of the adult population of...
A researcher at a major hospital wishes to estimate the proportion of the adult population of the United States that has high blood pressure. How large a sample is needed in order to be 95% confident that the sample proportion will not differ from the true proportion by more than 6%
9) A researcher wishes to estimate, with 95% confidence, the population proportion of students who did...
9) A researcher wishes to estimate, with 95% confidence, the population proportion of students who did not change their major. Her estimate must be accurate within 2.5% of the true proportion. a) What is the minimum sample size needed assuming that no prior information is available? b) What is the minimum sample size needed using a prior study that found that 34% of the students did not change their major?
2) A manufacturer wishes to estimate the proportion of washing machines leaving the factory that are...
2) A manufacturer wishes to estimate the proportion of washing machines leaving the factory that are defective. How large a sample should she check in order to be 90% confident that the true proportion is estimated to within 4%?
A researcher at a major clinic wishes to estimate the proportion of the adult population of...
A researcher at a major clinic wishes to estimate the proportion of the adult population of the United States that has a certain health condition. How large of a sample is needed in order to be 95% confident that the sample proportion will not differ from the true proportion by more than 3%? Group of answer choices 1113 1068 752 1344 1535
a. Assume that a sample is used to estimate a population proportion p. Find the 95%...
a. Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval for a sample of size 198 with 42 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. 95% C.I. = b. A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 0.5% margin of error at a 99% confidence...
A researcher wishes to estimate the number of households with two cars. How large a s proportion will not differ from the true proportion by more than 4%? ample is needed in order to be 95% confi...
A researcher wishes to estimate the number of households with two cars. How large a s proportion will not differ from the true proportion by more than 4%? ample is needed in order to be 95% confident that the sample A previous study indicates that the proportion of households with two cars is 22%.
A researcher wishes to estimate the number of households with two cars. How large a s proportion will not differ from the true proportion by more...
A researcher wishes to know with 95% confidence the proportion of people who own a desktop...
A researcher wishes to know with 95% confidence the proportion of people who own a desktop computer. A previous study showed that 40% of those interviewed owned a desktop. The researcher wishes to be accurate within 2% of the true proportion. Find the minimum sample size necessary.
answer is not 194
A
restuarant would like to estimate the proportion of tips that
exceed 18% of its dinner bills. Without any knowledge of the
population proportion, determine the sample size needed to
construct a 97% confidence interval with a margin of error of no
more than 6% to estimate the proportion.
A
restuarant would like to estimate the proportion of tips that
exceed 18% of its dinner bills. Without any knowledge of the
population proportion, determine the sample...
A restaurant would like to estimate the proportion of tips that exceed 18% of its dinner bills. Without any knowledge of the no more than 6% to estimate the proportion The sample size needed is (Round up to the nearest integer.) my knowledge of the population proportion, determine the sample size needed to construct a 96% confidence interval with a margin of error of
2) A manufacturer wishes to estimate the proportion of washing machines leaving the factory that are defective. How large a sample should she check in order to be 90% confident that the true proportion is estimated to within 4%?
A researcher wishes to estimate the number of households with two cars. How large a s proportion will not differ from the true proportion by more than 4%? ample is needed in order to be 95% confident that the sample A previous study indicates that the proportion of households with two cars is 22%.
A researcher wishes to estimate the number of households with two cars. How large a s proportion will not differ from the true proportion by more...
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