3. Use Slovin's Formula to compute for the value of n (number of samples) needed if the percentage of error is set at 4%. Then compute for the number of samples needed in each Year Level using Stratified Proportional Sampling. Show your complete solution.

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

A: Given,population proportion(p)=0.1margin of error (E)=0.025α=1-0.95=0.05α2=0.025Z0.025=1.96

Q: By how much the sample size n be increased if the width of the CI (T± za/2%) is to be halved? Show…

A: Given, The confidence interval is x¯±zα2σn Here, n is the sample size.

Q: Discuss the method of drawing a systematic sample of size 4 when N=24

A: Given - Pop. size = N = 24 Sample size = n = 4

Q: Suppose we take a random sample of 30 companies in an industry with 200 companies. We calculate the…

A: A random sample of 30 companies is selected from a population of 200 companies.

Q: In a pharmaceutical company, the proportion of injection bottles found defective were 0.2, 0.1, 0.8,…

A:

Q: That is the percentage of individual adult females, now, what is the percentage of samples of 64…

A: The mean is 79 kg and the standard deviation is 22 kg.

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: From provided information; Margin of error M.E = 4.5% that is 0.045 Confidence level= 90% The z…

Q: Insurance companies are interested in knowing the percent of all drivers who always buckle up before…

A: According to the given information in this question We need to find the minimum number you would…

Q: ou want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A:

Q: A sample selected from a population gave a sample proportion equal to 0.60.

A:

Q: Do you think that a margin of error greater than 5% is appropriate when conducting a research?

A: Margin of error helps to understand the confidence level of the research or survey. It is calculated…

Q: In survey of 3005 adults aged 57 through 85 years, if was found that 82% of them used at least one…

A: 1) The population of the provided information is adult aged 57 through 85 year. 2) The sample of the…

Q: a) find s^2 (and round it to two decimal places)  b) construct a 95% interval for B1  c) construct…

A: (a) Use EXCEL to obtain the value of S2   EXCEL procedure:   Go to EXCEL Go to Data>Data…

Q: hypotheses for this test are Ho: P1 – P2 = 0 vs. Ha: P1 – P2 # 0 and x=0.05. What is the p-value?…

A: For sample 1, we have that the sample size is N1=100N_1= 100, the number of dead cases is X1=22X_1 =…

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

A: Obtain the sample size of a preliminary estimate for p is 0.90.   The formula of sample size is,…

Q: researcher wishes to estimate the proportion of the adult population of the U.S. has sleep…

A: E=0.03 99% confidence interval for z=2.576 p=0.5

Q: From past experience a television manufacturer found that 15% or less of its sets needed any type of…

A: Given: Sample size (n) = 60 Number of sets needed repair (x) = 10 Hypothesized proportion (p) ≤ 0.15…

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: Given: The margin of error E=0.05 Confidence level = 90% Since the population proportion is not…

Q: student. Use 5% level of significance. Student A 10.08 10.11 10.09 10.10 10.12 Student B 9.88 10.14…

A: Here the Data is provided for 3 students , Student A , B and C We will use ANOVA for comparing the…

Q: How large a sample is needed (p= 0.70) if we wish to be 96% that our sample will be within 0.04 of…

A:

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A:

Q: You want to obtain a sample to esimate a population proportion. At this point in time you have no…

A:

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: sample size n=?

Q: In order to cut the margin error in half, what must we do? Group of answer choices Multiply the…

A: The margin of error is inversely proportional to the square root of the sample size. So, if you want…

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A:

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

A: Thus, it is given that the confidence level is 95%. Therefore, the significance level, α = 0.05.From…

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

A: Given, p=68%=0.68, c=0.99 and E=1.5%=0.015.

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: Given information Error = 2% = 0.02 Assuming Population proportion p = 0.5 Confidence level = 0.95

Q: Imagine that the figure below represents two means with their respective 95% Cls in a paired design.…

A: It is required to estimate the approximate p-value, given the figure representing the 95% confidence…

Q: A pharmaceutical researcher wants to determine the proportion of people who believes that branded…

A: Given that  Margin of error =E =1%=0.01 95% confidence.

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: It is given that margin of error (E) is 0.02 and the confidence level is 80%.

Q: A researcher wishes to estimate the proportion of college student who own a car. He wants to be 95%…

A: Given Confidence is 95% Error is 0.1

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

A: From the provided information, Population proportion (p) = 0.86 Confidence level = 99% Margin of…