Apply the Slovin’s formula to calculate the minimum sample size for a population of 3,658 when e = 0.10.
Q: 5. Find the minimum sample size n needed to estimate the population mean for the give ralues of c,…
A: a. Given information; c=0.90sd=6.8E=1 Significance level is α=1-c=1-0.90=0.10 From the standard…
Q: equipment and were discharged into rivers. They were discovered to be a health hazard and were…
A:
Q: A hypothesis test for a population proportion p is given below H0:p = 0.10…
A: State the null and alternative hypotheses. That is, the population proportion equals 0.10. That…
Q: Contaminated water: Polychlorinated biphenyls (PCBs) are a group of synthetic oil-like chemicals…
A: given data n = 80x¯ =1.9σ =0.2698% ci for μ = ?
Q: Determine the minimum sample size required when you want to be 95% confident that the sample mean…
A: We have confidence level = 95% sample mean is within one unit of the population mean i. e margin of…
Q: Given the result F(3, 12) = 6.15, p < .01, how large was the sample size?
A: Given The data is as follows: F3, 12=6.15p<0.01
Q: A population of trees has a mean leaf length of 6.2 inches. A sample of 17 of these trees in a…
A: The standard deviation can be calculated as:
Q: Find the required sample size, n, if c=0.89, E=0.05, and is unknown.
A: Solution: Given, c=0.89 E=0.05 Proportion is unknown. The critical value for zα/2 =1.598 using Excel…
Q: A horticulture student is interested on the antifungal properties of three plant species. Leaf…
A: Number of plant species = 3 Number of petri dishes = 5
Q: Determine the minimum sample size to be 90% confident that the estimate is within 5 of the true…
A: Given Level of significance ɑ=0.10,E= Margin of error=5 Standard deviations σ=12
Q: A random sample of 10 universities gave the following data on student-to-faculty ratio and…
A: 3a) Let us define X as S/F ratio and Y as graduation rate. Excel Procedure: Enter X and Y in…
Q: find the minimum sample size and need to estimate the mean for the given values of c, sd, and margin…
A:
Q: Two samples of sizes 60 and 90 have 52 and 48 as the respective A.Ms. and 9 and 12 as the respective…
A:
Q: A state-by-state survey found that the proportions of adults who are smokers in state A and state B…
A: The following information is provided. Number of respondent from each state is 3000. n1=n2=3000 The…
Q: Find the sample size n needed to estimate p for each of the following situations: a. E = 0.04, p ≈…
A: given data (a) E = 0.04p = 0.51-α = 0.90α = 1-0.90 =0.10(b) E = 0.01p = 0.51-α = 0.90α = 1-0.90…
Q: The results of a study that used an independent samples t-test was t(28) = 2.14, p = .01. Based on…
A: t(28) means that degree of freedom = 28 Now, degree of freedom for a t-test one sample case = n-1.
Q: An IQ test is designed so that the mean is 100 and the standard deviation is 17 for the population…
A: Givenstandard deviaion(σ)=17Margin of error(E)=4confidence level =…
Q: Find the minimum sample size required to estimate the mean pulse rate of adult males. We want 90%…
A: Since we know population standard deviation, use z-distribution to find z-critical value. Find…
Q: A sample of n= 64 scores is selected from a population with u = 60 and o= 10. If the sample mean is…
A: From the provided information, Mean (µ) = 60 Standard deviation (σ) = 10
Q: given normally distributed sample x=12 and s=3, use the Empirical Rule determine the upper and lower…
A: According to the empirical rule,
Q: An IQ test is designed so that the mean is 100 and the standard deviation is 12 for the population…
A: We want to find the sample size (n)
Q: A researcher obtains M = 45 with SS = 250 for a sample of n = 10 women and M = 49 with SS = 270 for…
A:
Q: University Registrar office wants to see if the proportions of undergraduate students that will…
A: We have to find test statistics.
Q: A state-by-state survey found that the proportions of adults who are smokers in state A and state B…
A: p1 = 0.245, n1 = 3000 p2 = 0.177, n2= 3000 alpha = 0.01
Q: An educational study to be conducted requires a test score in the middle 60% range. If μ = 100 and σ…
A:
Q: 4.12. A machine is used to fill containers with a liquid product. Fill volume can be assumed to be…
A: From the provided information, Sample size (n) = 10 The data values are as follow: 12.03, 12.01,…
Q: Q3. Calculate Estimated Standard error (S»)from the following data:_ 3 4 5 2 y 3 4 5
A: Regression: Regression is a technique that is used to determine relationship between two or more…
Q: Thomas wants to compare the mean concentration of carbon monoxide (CO) on residential versus…
A: The hypothesis is, H0: There is no difference between the mean of residential and commercial…
Q: A state-by-state survey found that the proportions of adults who are smokers in state A and state B…
A: Consider p1 as the proportion of adults who are smokers in state A and p2 as the proportion of…
Q: The 2006 Statistical Abstract of the United States reports on a survey that asked a national sample…
A: Given that Sample size (n) = 80000 Suppose that one-third of all American households own a pet…
Q: The marketing manager of a large multinational corporation is concerned that some salespersons…
A:
Q: In order to compare a new variety of wheat with a standard, an experiment is used with six plots…
A: a) In the given situation, the new variety of wheat is compared with the standard variety of wheat.…
Q: a. In words, define the random variable X1 = b. Họ: and X2 = с. На
A: Given: Significance level α=0.1 Claim: Technology effectively increased fuel efficiency.
Q: An IQ test is designed so that the mean is 100 and the standard deviation is 16 for the population…
A:
Q: A sample of n=25 scores is obtained from a population with u=70 and o=25. If the sample mean is…
A: Z-score: The z-score value is a numerical measurement that describes a value of the relationship to…
Q: How large a sample is needed in Exercise 9.2 if we wish to be 96% confident that our sample mean…
A: The standard deviation is 40 hours and the margin of error (E) is 10.
Q: It is crucial to have a minimum weight difference for each bearing ball before they are assembled…
A: Random sample = 4 significance level = 0.10
Q: The average worker at a local brake manufacturer produces 10 brakes per day (other statistical…
A: The average worker at a local brake manufacturer produces 10 brakes per day.
Q: . Write R codes to solve the following problems: )) Generate a random sample with size 250 from the…
A:
Q: If the standard error of the mean for the sampling distribution of random samples of size 25 from a…
A: Given:
Q: An IQ test is designed so that the mean is 100 and the standard deviation is 13 for the population…
A: We have given that, Mean (μ) = 100, standard deviation (σ) = 13 and confidence level = 95% and…
Q: The finite population correction is most useful for which of the following? a. It adjusts…
A: The finite population correction is a factor that is used to correct the standard error of a sample…
Q: samples were drawn independently from two normal populations. Sample 1: 11.6, 11.35, 10.1, 10.85,…
A: Sample 1: 11.6, 11.35, 10.1, 10.85, 10.35, 10.6, 11.1 Sample 2: 5.85, 8.85, 9.85, 11.85, 7.85 Test…
Apply the Slovin’s formula to calculate the minimum
Step by step
Solved in 2 steps
- 3.) A population has a mean of 300 and a variance of 80. If we get 160 samples from this population, what wili be the mean and standard deviation of the sampling distribution of sample mean? A.) Hg = 300 and og =0.53 B.) µg = 300 and og =0.71 C.) µg = 300 and og =6.32 D.) µg = 300 and og =80 %3D %3DA researcher reports t(26) = 2.71 for a two independent samples t-test. How many participants were in the entire experiment? a. 28 b. 27 c. 30 d. cannot determine with the information providedDetermine the minimum sample size required when you want to be 95% confident that the sample mean is within two units of the population mean and = 4.3. Assume the population is normally distributed. n =
- You have a population mean µ=27, and a sample mean of 29. The sample variance equals 6. Compute Cohen’s dHave you ever been frustrated because you could not get a container of some sort to release the last bit of its contents? An article reported on an investigation of this issue for various consumer products. Suppose five 6.0 oz tubes of toothpaste of a particular brand are randomly selected and squeezed until no more toothpaste will come out. Then each tube is cut open and the amount remaining is weighed, resulting in the following data: 0.51, 0.63, 0.42, 0.5, 0.35. Does it appear that the true average amount left is less than 10% of the advertised net contents? USE SALT (a) Check the validity of any assumptions necessary for testing the appropriate hypotheses. O The sample was randomly selected and the normal probability plot is not acceptably nonlinear. The sample was selected to represent a range of results and the normal probability plot is not acceptably nonlinear. The sample was selected to represent a range of results and the normal probability plot is not acceptably linear. O…The pulse rates of 168 randomly selected adult males vary from a low of 39 bpm to a high of 111 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want 98% confidence that the sample mean is within 2 bpm of the population mean. Complete parts (a) through (c) below
- A previous study estimated the value of p to be 0.54. Find the minimum sample size required to ensure that your estimate ("p) will be within 0.01 of p with 90% confidence.Contaminated water: Polychlorinated biphenyls (PCBS) are a group of synthetic oil-like chemicals that were at one time widely used as insulation in electrical equipment and were discharged into rivers. They were discovered to be a health hazard and were banned in the 1970s. Assume that water samples are being drawn from a river in order to estimate the PCB concentration. Suppose that a random sample of size 80 has a sample mean of 1.90 parts per billion (ppb). Assume the population standard deviation is o = 0.26 ppb. Part 1 of 3 ▬▬ esc (a) Construct a 98% confidence interval for the PCB concentration. Use tables or technology. Round your answers to at least two decimal places. The confidence interval is 1.83 1.97 Part 2 of 3 Skip Part Check Type here to search 12 2 # * 3 14 $ 4 D Et % 5 6 & 7 4+ Save For Later © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center 55°F 8 9 ho Submit. ► 11 d 1 3/An IQ test is designed so that the mean is 100 and the standard deviation is 24 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 90% confidence that the sample mean is within 8 IQ points of the true mean. Assume that o = 24 and determine the required sample size using technology. Then determine if this is a reasonable sample size for a real world calculation. ... The required sample size is. (Round up to the nearest integer.) Would it be reasonable to sample this number of students? O No. This number of IQ test scores is a fairly small number. Yes. This number of IQ test scores is a fairly small number. Yes. This number of IQ test scores is a fairly large number. No. This number of IQ test scores is a fairly large number.
- Determine the minimum sample size required when you want to be 95% confident that the sample mean is within one unit of the population mean and o=17.2. Assume the population is normally distributedThe pulse rates of 162 randomly selected adult males vary from a low of 42 bpm to a high of 102 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want 98% confidence that the sample mean is within 2 bpm of the population mean. Complete parts (a) through (c) below. a. Find the sample size using the range rule of thumb to estimateTwo major automobile manufacturers have produced compact cars with engines of the same size. We are interested in determining whether or not there is a significant difference in the mean MPG (miles per gallon) when testing for the fuel efficiency of these two brands of automobiles. A random sample of eight cars from each manufacturer is selected, and eight drivers are selected to drive each automobile for a specified distance. The following data (in miles per gallon) show the results of the test. Assume the population of differences is normally distributed. Driver Manufacturer A Manufacturer B 1 36 30 2 31 31 3 30 28 4 30 27 5 29 27 6 33 30 7 35 25 8 29 31 The test statistic is 2.316. At ? = 0.10, the null hypothesis should be revised .should not be tested. should be rejected. should not be rejected.
