Determine what proportion (n) of a population N of 4,000 will make your research work scientific in terms of sampling? Use the Slovin's formula at 0.05 level of significance. Give the solution.

Q: 90% ci Given the population size with a corresponding margin of error, determine the sample size of…

A: Given that  N=2500 Margin of Error (e)=0.05 Then we have to determine sample size  Using the Formula…

Q: the random sample selected by the company will result in a value of e within 3 percentage pointe ef…

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Q: Apolster wishes to estimate the proportion of Unted ates voters who lavor capital punishment How…

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Q: A recent poll of 800 people who work indoors found that 208 of them smoke. If the researchers wnat…

A: The sample proportion can be calculated as: p=x/n=208/800=0.26 At a 98% confidence level, the z…

Q: You want to obtain a sample to estimate the proportion of a population that possess a particular…

A: Given that   Proportion having genetic marker (p) = 18% = 0.18 Confidence level (C) = 90%  The…

Q: For a population with  σ = 8,  X=13 and a z-score = 2.21, find the value of µ

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Q: A sample with a mean of M=8 has an EZ= 56  how many scores are in the sample?   the number of…

A: Given that, Mean = M = 8 EZ= 56  n = ?   Definition of mean :  Mean is defined as sum of all…

Q: you want to obtain a sample to estimate a population proportion. based on previous evidence, you…

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Q: What is the percent uncertainty in the measurement 5.38 0.21 m ? Express your answer using two…

A: The formula for calculating percent uncertainty is percent uncertainty =

Q: (e) forty-three percent of all trials of this type are completed within how many days?

A: Given Information: The duration of a particular type of criminal trial is known to be normally…

Q: A researcher at a major hospital wishes to estimate the proportion of the adult population of the…

A: Obtain the large sample size. The large sample size is obtained below as follows: Use EXCEL…

Q: Find the maximum percentage error in an approximate number –4.5

A: the relative error in approximation is  relative error =absolute errormeasured value

Q: Blood pressure Diastolic blood pressure in adults is normally |distributed with µ = 80 mm Hg and o =…

A: Solution: Given information: Let X be the diastolic blood pressure in adults is normally distributed…

Q: Q4. Among 100 fish caught in a certain lake, 18 were inedible as a result of chemical pollution.…

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Q: Approximately 7% of the population has the O- blood-type. If you drew a random and independent…

A: p= 0.07   n = 2065

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A: Given information- Margin of error, E = 7% = 0.07 Confidence level, c = 80% Since nothing is known…

Q: If you want to be 99​%confident of estimating the population proportion to within a sampling error…

A: GivenSampling Error(E)=0.06population proportion(p)=0.36confidence…

Q: b. If the study had found that 51 of the 80 students were working then: ZSTAT =| (Round your answer…

A: Given sample size, n = 80 students population proportion of working = p = 0.48 51 of the 80 students…

Q: Kai'Sa is doing her best to maintain her figure by following a strict calorie counting process.…

A: Given data Hypothesized mean µ= 370 Sample mean = 383 Sample Standard deviation s = 70 n = 60…

Q: Paola has a two-plates scale and two samples, one of 20 gr and the other of 30 gr. Paola must…

A: A two-pan scale has two pans one with the reference weight and the other with the unknown sample.…

Q: C) What percentage of CT scans in this target population would be positive?

A: Given: P(Cancer) = 3% = 0.03 P(No cancer) = 1-0.03 = 0.97. P(test positive|cancer) = 89% = 0.89…

Q: Do teachers find their work rewarding and satisfying? An article reports the results of a survey of…

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Q: d) What is the predicted amount of fireworks used in 1998?   e) What is the actual fireworks used…

A: 1998 means x = 8 (1998-1990).   The predicted amount of fireworks in 1998 can be calculated as:

Q: You sampled 20 students in a high school to try to predict the students' GPAs in 9th grade based on…

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Q: When estimating the true proportion, how large a sample is needed to be 95% confident that the error…

A: It is given that Margin of error E = 0.06 Level of confidence = 0.95 The critical value of Z at 95%…

Q: A researcher is interested in maximum-security inmates. She groups inmates by the type of crime…

A: Here, the stratified random sampling method was used. Because the whole population was divided into…

Q: In an outbreak of typhoid fever among attendees of an acquaintance party, 99 persons ate spaghetti,…

A: Given that:  n1=99  x1=30 n2=63 x2=20

Q: In a random survey of 1500 adults in California and 1000 adults in Oregon, you found that 228…

A: Given that

Q: candidate for the municipal elections wishes to survey residents of her district to see what…

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Q: An educator desires to estimate, within 4%, the true percentage of high school students who study at…

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Q: A researcher wishes to estimate the proportion of adult males who are less than 5 feet 5 inches…

A: Given data,E = 45 - 0.04Ƶ -value at 90% confidence is Ƶc = 1.645

Q: Carter conducted an experiment to see how many people who passed by him at the park were wearing…

A: Given,          Carter conducted an experiment to see how many people who passed by him           at…

Q: A recent poll of 700 people who work indoors found that 280 smoke. If the researchers want to be 98%…

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Q: An environmentalist wants to find out the fraction of oil tankers that have spills each month. Step…

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Q: The proportion of people that own cats is 80%. A veterinarian believes that this proportion is…

A: Given that, Sample size n=200 Population proportion p=0.80 Sample proportion of people who owned…

Q: What is the percentage of area below z= -1.51? Round to nearest tenth as needed

A: The z-score value is -1.51.

Q: chnicians gather a random sample of fill amounts and find that the mean of the sample is 7.5 ounces…

A: We have,  μ=7.3 The null hypothesis states that the mean is equal to 7.3 whereas the alternative…

Q: In a survey of 1,500 high school s of sleep. What is the approximate get an average of 8 hours of…

A: Here it is given that - Number of sample (n) = 1500 Sample proportion (p) = 79100 = 0.79 So, q = 1-p…

Q: 2 Considering the 5800 enrollees in the College of Education, a researcher would like to make a…

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Q: What is the formula used to determine the proportion (P) of something in a sample population? ох in…

A: In proportion test estimate of the proportion is given as follows: p⏞=Xn Where X is number in the…

Q: Sleep Aids. The additional sleep, to the nearest tenth of an hour, obtained by a sample of 100…

A: Quantitative variable: A variable that provides numerical values of individual and Arithmetic…

Q: You are interested in the effectiveness of a new sample of 7 people's blood pressure before and…

A: By applying a paired 't'test, a)  sample size,n= 7 Mean (d̄) =Σd/n = 22/7 = 3.1429  standard…

Q: a. How many of the 125 people had resting pulse rates of more than 100? b. What percentage of people…

A: a. There are totally 125 people who had resting pulse rates. Count the number of dots that are above…

Q: f you want to be 99​% confident of estimating the population proportion to within a sampling error…

A: p = 0.42 z-critical value at alpha(0.01) is 2.576. ME = 0.05

Q: 4. In statistics, the formula E = t can be used to calculate a margin of error. Solve this formula…

A: This exercise concerns changing the subject of the equation from E (error) to n( the sample size)

Q: An environmentalist wants to find out the fraction of oil tankers that have spills each month.…

A: Givensample size = 563 tankers number of ships did not have spills = 445  number of ships have…

Q: Complete the parts below to perform a hypothesis test to see if there is enough evidence, at the…

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Q: C1. A computer spam filter is 98% effective at sending spam emails to my junk folder, but will also…

A: Solution

Q: Using the diagram above, what is the measure of KPN?

A: We have to use the relationship of angles and geometry.

Q: What percent of our campus is female? If no preliminary study is made to estimate, how large a…

A: Given that no preliminary sample is taken to estimate the proportion of females. let the sample size…