A sample of size 59 is take from a binomial distribution with parameters 59 and 0.38. The sample mean is used as an estimate of the population mean; what is the mean square error of the estimator?

Q: Assume that the population of serum amylase determinations from which the sample of size  15 (s = 33…

A: s = 33 n = 15 CL = 0.98

Q: 1. In a random sample of 400 observations from a population whose variance is o²=100, we calculated…

A:

Q: The sugar content of the syrup in canned peaches is normally distributed, and the variance is…

A:

Q: d) If the variance is 120 1b, what sample size is necessary to estimate true yield point to be…

A: Given that  Variance  ?2=120 Margin of error =E =3 99% confidence.

Q: Compute the variance square and Standard Deviation for the  POISSON Distribution of:   Find P(3)?…

A:

Q: Suppose x has a normal distribution with a population standard deviation of 2.2. If a random sample…

A:

Q: A sports statiscian claims that the mean winning times for Boston Marathon women's division open…

A: The claim is that “the mean winning times for Boston Marathon women's open division champions is at…

Q: A single sample of n = 16 scores has a mean of M = 65 and an estimated standard error of 2 points.…

A:

Q: What is the kurtosis for a distribution with a mean of 12.00 and a mode of 12.00?

A: The shape of a distribution is determined by 2 measures, skewness and kurtosis. Skewness for non…

Q: Compare the pdfs of three normal random variables, one with mean 1 and standard deviation 1, one…

A: solution: If we plot three pdf separately we get:

Q: A sample of 12 scores has a variance of s2 = 48. What is the estimated standard error for the sample…

A:

Q: If X is a normal variate with mean 5 and variance 4. Find P ( -1.5 < X < 2)?

A: Given,mean(μ)=5standard deviation(σ)=2

Q: The sugar content of the syrup in canned peaches is normally distributed, and the variance is…

A: Givensample size(n)=10standard deviation(s)=4confidence interval = 95%

Q: For a population mean of 50, a sample mean of 52, an estimated standard deviation of 3, and a sample…

A: Given information Population mean µ = 50 Sample size (n) = 20 Mean x̅ = 52 Standard deviation (s) =…

Q: A sample with a variance of s2 = 36 has a standard deviation equal to s = 6. Tru or false

A:

Q: A sample of n = 25 scores has a mean of x̅ = 65 and an estimated standard error of sx̅ = 2 points.…

A: The standard error is 2 points.

Q: A sample of n = 4 scores has a variance of s2 = 64. What is the estimated standard error for the…

A: Sample size, n = 4 Variance = 64

Q: In practice, when comparing two means using small samples, when would you recommend assuming equal…

A: We have to find current option from the given options.

Q: suppose the random variable X has a normal distribution with a mean of 10 and a variance of 16…

A: Given information: X is a random variable follows normal distribution. That means,

Q: The table to the right shows the cost per ounce (in dollars) for a random sample of toothpastes…

A: Note: According to our guidelines we can answer only first three subparts   The table to the right…

Q: A sample of 20 cans of tomato juice showed a standard deviation of 0.4 ounces. A 95% confidence…

A: we have given that, sample size = 20 standard deviation = 0.4 now, variance= (standard deviation)^2…

Q: A sample is selected from a population with a mean of 65 and a standard deviation of 15. If the…

A: It is given that:

Q: (b) The signals {x[0]. . „x[N – 1]} are observed, that are independent and normally distributed with…

A: GIVEN : Let X(0) , X(1) , X(2),....X(N-1) are independent and normally distributed with mean zero…

Q: A sample of 4 scores has a variance of s2 = 64. What is the estimated standard error for the sample…

A: Standard Error:  Standard error gives the accuracy of a sample mean by measuring the…

Q: Suppose a random variable, x, arises from a binomial experiment. Suppose n = 8 and p = 0.62 (Must…

A: Given data, n=8 p=0.62

Q: A sample of n= 4 scores has a variance of s 64. What is the estimated standard error for the sample…

A: Givensample size(n)=4variance(s2)=64

Q: Given a non-normal population with a variance of 49 and mean of 3. If the size of a sample is n =…

A: We have given that  Variance =49 , mean= 3 Sample size = 81 Then standard deviation = sqrt(…

Q: A sample of n =16 scores has a mean of M =65 and an estimated standard error = 2 What is the sample…

A: Given Information: Sample size (n) = 16 Mean  = 65 Standard Error (SE) = 2 To find the variance of…

Q: When a population mean is compared to the mean of all possible sample means of size 25, the two…

A:

Q: Assume the random variable X is normally distributed with a mean of 50 and a standard deviation of…

A:

Q: A random sample of size n= 16 was drawn from a population. If it is known that the population has…

A: Given : Mean = 32 Sample size =n = 16 Standard deviation = 5

Q: have a variance of 1.20 x 10-4. construct a 95% confidence interval for o, the standard deviation of…

A:

Q: If x, xy ... x be a random sample drawn from a normal population with mean u and variance o?, then…

A:

Q: P( x > 20 )

A: Given the random variable X has a normal distribution with a mean  µ=10 and Variance Ϭ^2=16. The…

Q: A researcher prepared a figure showing sample quantiles as a function of the quantiles of a standard…

A: Introduction: For a normally distributed random variable, X with mean μ, and standard deviation σ,…

Q: If a random sample of size n=160 has x¯=105 and s=9.5, find the standard error of the statistic.…

A:

Q: The standard z-value of an arbitrary 16-unit sample from the normal-class population with a mean of…

A: Given Z=2 Mean=60, variance=100, sd=10, n=16 Z=(X-mean)/sd  Z=(Xbar-mean)/sd/√n

Q: Consider a normally distributed population of scores with a mean μ = 100 and σx = 10. What score has…

A:

Q: A sample of size 400 is taken from a population whose standard deviation is 16. Find the standard…

A:

Q: Suppose a random sample of size 1000 is selected from a large population where the population mean…

A: Obtain the standard error of the mean of the sampling distribution. The standard error of the mean…

Q: Assume that you have a binomial experiment with p = 0.4 and a sample size of 50. The variance of…

A: X be a random variable that follows binomial distribution with probability of success 0.40 and…

Q: suppose the random variable X has a normal distribution with a mean of 10 and a variance of 16…

A: Given: The random variable X is normally distributed. The population mean is given as:…

Q: in a recent year , the mean number of strokes per hole for a famous golfer was approximalety 3.6…

A:

Q: A sample of n = 25 scores has a mean of x̅ = 65 and an estimated standard error of sM = 2 points.…

A: Given that, x̅ = 65sM = 2 n=25 The formula of sample variance is, Using the standard error of…

Q: At a particular academically challenging high school, the average GPA of a high school senior is…

A:

Q: (a) Calculate n . s for these data, the mean of the variances of the four samples and the value of…

A: Given Data :   Variety A Variety B Variety C Variety D   65 55 56 62   64 56 59 59   60 63…

Q: A company producing air conditioning units should decide how many units have to be tested for…

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.