A sample of size n = 25 with the population standard deviation o = 3, compute the margin of error of a 90% confidence interval for the mean u.

Q: A random sample of size n=16 is drawn from a population having a normal distribution. The mean and…

A: Given information Sample size n = 16 Mean x̅ = 23.8 Standard deviation s = 3.2 98 percent confidence…

Q: Find a 95% confidence interval for the sample mean of Y = X̄12 + X̄22 when X̄'s are obtained from…

A: Given X¯'s are obtained from standard normal population.

Q: A simple random sample from a population with a normal distribution of 97 body temperatures has…

A: From the provided information, Sample size (n) = 97 Sample mean (x̅) = 98.50o F Sample standard…

Q: A sample of size 10 has a sample mean of 1000 and a sample variance of 100. Then a 90% Confidence…

A: We have given that,  Sample mean (x̄) = 1000 and sample variance (s^2) = 100 and sample size (n) =…

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: Let a random sample of size 17 from the normal distribution N(μ, σ2) yieldx = 4.7 and s2 = 5.76.…

A: Consider the random sample size of n=17 from the normal distribution N(μ,σ2)yield  x=4.7, s2=5.76.…

Q: a sample of 64 measurements are randomly selected from a poulation with a mean of 30 and a standard…

A: We have given that Sample size (n) = 64 Mean(µ) = 30Standard deviations (σ) = 5

Q: Let X1.,X, be iid from Normal(0,e) population (0>0). Use the pivotal quantity to find (1-a)…

A:

Q: A statistical research yields to the sample proportion of a certain feature in a certain community…

A: Givensample proportion(p^)=0.80Margin of error(E)=0.09Confidence level(α)=90%

Q: In a sample of n=19 lichen​ specimens, the researchers found the mean and standard deviation of the…

A: We have to find out sample size

Q: A sample of 51 recent graduates from a specific program yielded an average starting salary of…

A: From the provided information, Sample size (n) = 51 Sample mean (x̅) = $38500 Sample standard…

Q: A sample of n = 25 scores is determined to have a standard error of 2 points. what is the standard…

A: Given data, SE=2 n=25 s=?

Q: A random sample of size 20 yields has a sample mean of 3.13 and a sample variance of 1.45. Calculate…

A:

Q: A random sample of size 15 taken from a normally distributed population revealed a sample mean of 75…

A: E. Given information: sample mean=75 sample variance=25 Sample standard deviation=5 sample size=15…

Q: A simple random sample from a population with a normal distribution of 106 body temperatures has…

A: Given that, A simple random sample from a population with a normal distribution of 106 body…

Q: A sample of size n = 10 is drawn from an approximately normal population whose standard deviation is…

A: Givensample Mean(x)=50.9standard deviation(σ)=12.5sample size(n)=10Confidence interval = 99%

Q: A random sample of 91 observations produced a mean x = 25.4 and a standard deviations=2.4. a. Find a…

A: Given that the mean is x-bar=25.4 and the standard deviation is s=2.4 Sample size is 91. Degrees of…

Q: 29. A sample of size 78 from a population having standard deviation o =51 produced a mean of 264.00.…

A: Given information- Population standard deviation, σ = 51 Sample size, n = 78 Mean, x-bar = 264.00…

Q: Let the mean of the chance sample with a width of n = 9 taken in a normally distributed population…

A: The confidence interval gives a plausible range of values for an unknown parameter based on the…

Q: A sample of 8 items has an average fat content of 18.6 grams and a standard deviation of 2.4 grams.…

A: Given : μ = 18.6σ = 2.4n = 8 As standard deviation is known so we will apply z test 99% confidence…

Q: A simple random sample from a population with a normal distribution of 97 body temperatures has…

A:

Q: The weights in grams of oranges grown in a certain area are normally distributed with mean µ and…

A:

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: A simple random sample from a population with a normal distribution of 103 body temperatures has x̄…

A: From the provided information, Sample size (n) = 103 Sample mean (x̅) = 98.70o F Sample standard…

Q: find the critical value t of alpha over 2 used to construct  the confidence interval for a mean from…

A: It is given that n is 5 and level of significance is 0.02.

Q: A researcher is interested in estimating the mean weight of a semi tracker truck to determine the…

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: A sample of 16 items has an average fat content of 20 grams and a standard deviation of 2 grams.…

A: The random variable fat content follows normal distribution. We have to construct 99% confidence…

Q: The sample size needed to estimate a population mean within 2 units with a 95% confidence when the…

A: Given,σ=8E=2Zc at 95% confidence is Zc=1.96n=?

Q: A random sample of size 36 drawn from the population of a known mean of 50 and standard deviation of…

A:

Q: Based on a large sample of capacitors of a certain type, a 95% confidence interval for the mean…

A: Solution: From the given information, a 95% confidence interval for the mean capacitance is (0.213,…

Q: A sample of size 12 has d mean of 29 and a standard deviation of 6. Assuming the population is…

A: Given that sample size n = 12 Sample mean = 29 Sample SD = 6 The critical value of t at (n - 1) = 11…

Q: The average earnings per share (EPS) for 10 industrial stocks randomly selected from those listed on…

A: Given data,n=10x=1.85s=0.395α=0.01df=n-1=9t-critical value is tc=3.250

Q: A sample of size n = 98 produced the sample mean of  22.1. Assuming the population standard…

A:

Q: A random sample of n measurements was selected from a population with unknown mean μ and known…

A:

Q: The required sample size for the interval estimation of the population mean µ can be computed if we…

A:

Q: The scores of a random sample of 100 high school students on a standardized mathematics test in a…

A: Given Data : Sample Size , n= 100 Sample Mean , x̄ = 78.0 population standard…

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

A:

Q: A random sample of size 30 from a normal population yields x̅ = 69  and s = 4.  The lower bound of a…

A:

Q: Find the critical value, t c,  used for a 97% confidence interval for the mean with a sample size of…

A: The confidence level is, 100 (1 – α) % = 97%. Hence, (1 – α) = 0.97, and the significance level is,…

Q: Let X1,.., Xn be a random sample from a population with Gamma(a, B) distribu- tion. If a is a known…

A: Given, xi~Gammaα,β ,i=1,2,..,n Where α is known constant and β is unknown. Here, α is the shape…

Q: A sample of size 25 drawn from a normally distributed population has a sample mean 12 and a sample…

A:

Q: An SRS of 20 orangutans is selected, and 65 cc of blood is to be drawn from each orangutan using a…

A:

Q: For a random sample of 36 items and a sample mean of 211, compute a 95% confidence interval for u if…

A: According to the given information, we have Population standard deviation = 23 Sample size = 36…

Q: suppose X has a mounded-shaped distribution with a standard deviation of O= 3. Find the minimal…

A:

Q: A simple random sample from a population with a normal distribution of 98 body temperatures has…

A:

Q: A sample of 120 students yielded a sample mean GPA of 3.35, end a sample standard deviation equal to…

A: Obtain the 95% confidence interval for the population mean GPA. The 95% confidence interval for the…

Q: Suppose that a simple random sample is taken from a normal population having a standard deviation of…

A: Given, n=64 σ=5.5α=0.05MOE=Zα/2*σn

Q: A simple random sample from a population with a nomal distribution of 100 body temperatures has x=…

A: