An epidemiologist with the Florida Department of Health needs to estimate the proportion of Floridians who are infected with the corona virus but are asymptomatic (show no signs of the virus). The epidemiologist compiled a preliminary random sample of infected patients and found that 65% of the sample were also asymptomatic. How large a sample should be selected such that the margin of error of the estimate for a 96% confidence interval is at most 1.93%. Round the solution up to the nearest whole number.

Q: A company manufacturing some medicine tablets with the Average weight of 500 mg and population…

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Q: A manager needs to know the proportion of employees who have insurance. He selects 200 employees and…

A:

Q: Controls 2.4 0.0 0.9 -0.2 1.0 1.7 2.9 -0.6 1.1 -0.1 0.3 1.2 -1.6 -0.1 -1.5 0.7 -0.4 2.2 -0.4 -0.4…

A: 1) The stem and leaf plot is Control   Breast-feeders   -8 3   -7 8,0   -6 8,8,5,5,2   -5…

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Q: Create a 95% confidence interval for the proportion of U.S. adults who live with one or more chronic…

A: Here Given proportion of Us adults report that they live with one more chronic conditions=P¯=0.45…

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A: It is given that the proportion of computers that were repaired more than three times in the last…

Q: For a research, let's consider the 10-unit sample with s = 32,866 as a preliminary example. For a…

A: Given data,s=32866E=10z-value at 95% confidence is Zc=1.96n=?

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Q: A poll of 827 students at Alpha state college found that 61% of those polled preferred a quarter…

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Q: A researcher wanted to check whether the percentage of Canadian adults with obesity has decreased in…

A: Number of Canadian adults in 2005= 75 Number of Canadian adults in 2009 = 120   significance level =…

Q: sample standard deviation of $74.50. a. Develop a  95% confidence interval estimate of the mean…

A: The sample size, i.e., the sampled number of families, n=64.The sample average spent amount(in $)…

Q: In a recent year, a sample of the South American Redeye Piranha was collected by fishermen on a…

A: We have to interprete data.

Q: Find the critical value Z a/2 for the 92% confidence interval.

A: We have given information, The confidence level is C=0.92. Here we have to obtain critical value of…

Q: How large would the sample need to be so that a 95% confidence interval would have a margin of…

A:

Q: In a clinical trial, 50 patients who received a new medication are randomly selected. It was found…

A: Solution: Let X be the number of patients suffered serious side effects from this new medication and…

Q: Determine the sample size needed to create a 99%

A: Given that  Margin of error =E =0.05 The confidence level is 99%. The sample proportion can be taken…

Q: In a test of physical fitness, a fitness trainer for a group of men ages 65 and older from a local…

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Q: We plan to sample students to construct a 98% confidence interval for the proportion who uses Yelp…

A:

Q: mong 1815 randomly selected high school students surveyed by the Centers for Diseases Control, 300…

A: Given : Total number of high school students = 1815 Number of students said they were current…

Q: You are working as an assistant to the dean of institutional research at your university. The dean…

A: Here mean is not given and standard deviation is also not given.

Q: Construct a 95% confidence interval for the proportion of all mechanically ventilated patients at…

A: From provided information, a study examined patients who were mechanically ventilated in intensive…

Q: In a previous study, it was found that p-hat=0.68 for a particular sample. Suppose we would like to…

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Q: You are working as an assistant to the dean of institutional research at your university. The dean…

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A: A confidence interval is a numeric value that a researcher will be reasonably confident in and…

Q: Find the critical value tc for a 90% confidence level when the sample size is 24. Use Table 4 on…

A: Given, n = 24 α = 0.1

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A:

Q: You are working as an assistant to the dean of institutional research at your university. The dean…

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Q: The data below are yields for two different types of corn seed that were used on adjacent plots of…

A: From the provided information, Confidence level = 95% The difference table can be constructed as:…

Q: Sleep apnea is a disorder in which you have one or more pauses in breathing or shallow breaths while…

A: Obtain the 99% confidence interval for the proportion of individuals who suffer from sleep apnea who…

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Q: You are a data analyst for a health insurance company and want to estimate the population mean of…

A: The number of patients is 32.

Q: A survey conducted by the AAA showed that a family of four spends on average $215.60 per day while…

A: It is given that sample mean is 252.45 and the standard deviation is 74.50.

Q: Allen's hummingbird has been studied by zoologist Bill Alther. Suppose a small group of 16 Allen's…

A:

Q: A small business wanted to estimate the mean income from their customers. They took a sample of 256…

A: We have to find  the 90% confidence interval estimate for the population mean income of their…

Q: Allen's hummingbird has been studied by zoologist Bill Alther. Suppose a small group of 15 Allen's…

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Q: n a trial of 350 patients who received 10-mg doses of a drug daily, 49 reported headache as a side…

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Q: With data from the 2009 National Health Interview Survey, the Centers for Disease Control estimated…

A: The sample proportion is 0.12 and the standard error is 0.013.

Q: Take an SRS where n equals 50 and calculate at 95% confidence interval. If we took a different SRS…

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Q: How large of a sample needs to be taken

A: It is given that Confidence level = 98%Margin of error, E = 1.5% = 0.015

Q: In an engineering class, students want to determine the difference in the mean strength between two…

A: Here using the given information we give the answer such as

Q: Estimate the minimum sample size needed to achieve the margin of error E= 0.026 for a​ 95%…

A: Given The data is as follows: E=0.026CL=0.95