proportion of individuals with a certain disease is 0.10. if we select a sample of size 1000 from this population, determine the value of the variance of the sample proportion

Q: If the standard Z value of a random Ferdin drawn from a normal distribution populason with an…

A: Given  Mean=mu=80 Variance=sigma^2=400 Z=1.2

Q: Compute for the variance of all the data on Table 2. Show your solution and  answer inside the box.…

A: Given are three sets of data, namely for student A, B and C: Enter data in Excel and calculate mean…

Q: Suppose we have two normal populations denoted A and B, and we want to compare their population…

A: Let the sample variance of A be SA2, the according to question the variance of B will be…

Q: Suppose the yield (lb/acre) of corn from 2 types of soil is studied for years and the means  and…

A: Type A Type B Mean   4500  3900 Variance 455,625 152,100  , For part a) n1 = 10 and n2 =…

Q: A juice factory buys apple concentrate from two different suppliers. The mean concentration is the…

A: F-test of equality variances is a test for the null hypothesis  that two normal populations have the…

Q: A variable with a population average of 50 and a variance of 100 is likely to have an average…

A:

Q: A drug company produces pills containing an active ingredient. The company is concerned about the…

A: Given: n=20s2=2.05σ2=1.5

Q: If X is normally distributed with a mean of 6 and a variance of 25, P(|X-6|<5) P(|X-6|<10)…

A: As per guideline expert have to answer first three subparts only dear student please upload other…

Q: In testing the lethal concentration of a chemical found in polluted water, it is found that a…

A: a)

Q: The mean, standard deviation, variances, and coefficient of variance of plant height from two rice…

A:

Q: An electronics company manufactures resistors that have a mean resistance of 105 ohms and a variance…

A:

Q: If X, Y and Z are uncorrelated and independent variables with the same variance o and zero mean.…

A:

Q: Suppose X has finite variance. Let Y = |X|. Does Y have the same, a smaller, or a larger variance…

A: Given that X has finite variance i.e. var(x)&lt;∞ Let Y =|X| that means Y can take 2 values i.e. X…

Q: A random sample of size 36, taken from a normal population, has a mean of 100. A second random…

A:

Q: Two random samples were drawn from two normal populations and their values were. Test whether the…

A: Test hypothesis: The data represents the values of two samples A and B drawn from two populations.…

Q: A researcher obtains t (20) = 2.00 and Md = 9 for a repeated measures study. If the researcher…

A: Given, t=2 df=20

Q: A sample of 60 items from population 1 has a sample variance of 8 while a sample of 40 items from…

A:

Q: Eighteen five-gallon containers of milk are selected, and each is tested to determine its weight in…

A: To test the claim: the population variance is greater than 6.2 at α = 0.01

Q: If you obtained all possible random samples of size 6 as above and computed the mean from each…

A: From the above data  If you obtained all possible random samples of size 6 as above and computed the…

Q: weight of 450kg with a variance of 70. A sample of 149 female lions had an average weight of 250kg…

A:

Q: Two samples are selected from a population, and a treatment is administered to the samples. If both…

A: Introduction: It is given that the two samples are collected separately, from the same population;…

Q: Consider a study in which the sum of squares based on an experimental group of 10 participants is…

A: Pooled variance:The pooled variance is given by,

Q: A one-way analysis of variances produces dftotal = 39 and dfwithin = 36. For this analysis, what is…

A: A one-way analysis of variances produces dftotal = 39 and dfwithin = 36. For this analysis, what is…

Q: 5.lf two samples are selected from the same population, under what circumstances will the two…

A: We uses t-test to test the hypothesis about an unknown population mean.

Q: population of N = 5 scores has a variance of σ 2 = 24. If the scores were from a sample, what value…

A:

Q: Here is a POPULATION of scores: 4 2 3 2 1 29. What is the variance for this population of scores?…

A:

Q: Independent random variables X_1 and X_2 are combined according to the formula L = 3*X_1 + 2*X_2. If…

A: It is an important measure of dispersion . It is widely used in statistics .

Q: Given that a random variable x is normally distributed with mean 3.5 and variance 15. Using standard…

A: Given Information: x is normally distributed with mean 3.5 and variance 15. Hence, The standardized…

Q: Let X and Y and Z are uncorrelated random variables with the same variance. Find the correlation…

A:

Q: The higher the value of a², the larger the variance of B2 given in var(ß,) =

A: Given that The variance of the estimator beta2 is given  We have to descriptive the higher the value…

Q: If two samples are selected from the same population, under which circumstances will the two samples…

A: Given that, The two samples are selected from the same population.

Q: The weights (in kg.) of 8 students of class VII are 38, 42, 43, 50, 48, 45, 52 and 50. Test the…

A: Data given  38,42,43,50,48,45,52,50  Population variance=σ2=48

Q: In analysis of variance problem if SST = 150 and SSTR = 100, then SSE is

A: It is known that, SSE = SST-SSTR.

Q: The formula for total variance (SST) is

A: Solution:-

Q: What term requires the variance of a person’s scores at time 1, time 2, and time 3 be equal?…

A: Variance is equal in a statistical test like analysis of variance also known as ANOVA. It assumes…

Q: Once a week, Haziq rows his boat from the island where he lives to the mainland. The journey time, X…

A: From the given information, Consider, X be the random variable that denotes the journey time in…

Q: The distribution of z-scores corresponding with a population of scores always has a variance of…

A: The distribution of z scores follows standard normal distribution.

Q: Then the value of the variance of X+Y is:

A: Variance of X + Y can be calculated as V(X + Y) = V(X) + V(Y) + 2Cov(X, Y)

Q: the standard Z value of a 16-unit sample taken randomly from a normal distribution populason with an…

A:

Q: A sample of 60 items from population 1 has a sample variance of 8 while a sample of 40 items from…

A: Given S1^2=10 S2^2=14

Q: If independent random variables 'X' and Y have the variances 36 and 16 respectively, find the…

A:

Q: Suppose we have two normal populations denoted A and B, and we want to compare their population…

A: Given, sample size 1=15 sample size 2=9 s2B=(0.3)s2As2Bs2A=0.3

Q: Assume the mean and variance of 5 observations are 1 and 5, respectively. If 5, as one of these five…

A: Given : mean = 1 variance = 5

Q: How many F ratios are figured in a two-way analysis of variance?     1     2     3     as many…

A: In two-way analysis of variance we calculate 3 F ratios.

Q: In clinical trials of a medication whose purpose is treat migraine headaches, 0.4% of the patients…

A:

Q: In the experiment of A and B consumers, 12 sample points are set for A consumers, and the average…

A: The null and alternative hypotheses are stated as follows: The pooled variance is computed as…

Q: From a population of 500 elements, a sample of 225 elements is selected. it is known that the…

A:

Q: Suppose it is known that the response time of healthy subjects to a particular stimulus is a…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.