Given a binomial random variable x and p = 0.2, find the mean for a sample size of 15.

Q: Determine the minimum sample size required when you want to be 95% confident that the sample mean is…

A:

Q: The weight of a small Starbucks coffer is normally distributed random variable with a mean of 340…

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Q: what would the mean and standard deviation of the sample proportion ˆp be?

A: Let X be Pennsylvanians who have a high school diploma Given, n = 225 p = 0.83

Q: Determine and d H =0 % -0 from the given parameters of the population and sample size p=90, o = 24,…

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Q: Suppose that you wish to find a population proportion p with accuracy ±2% with 99% confidence. What…

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Q: Given a binomial variable with a mean of 30 and a variance of 21, what is p?

A: X~Binomial(n , p) Mean=30, Variance=21

Q: find the margin of error for a sample mean, given n=16, s=4, Xbar=17. for a 95% confidence interval.

A: The margin of error for sample mean is given by,

Q: When solving a problem related to one sample and the confidence interval of variance. Which table…

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Q: Determine and o from the given parameters of the population and sample size. p= 87, o = 13, n= 35 口

A: The mean of the sampling distribution of the sample mean is given by:

Q: The average cost to attend a particular university is 63,551. Assume the population standard…

A: Approach to solving the question:So, with a sample size of 60 students, we can be 95% confident that…

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: There are four brothers in a family.  Their ages are 7 years,10 years,15 years, and 21 years.…

A: From the provided information, Sample size (n) = 4 The data values are as follow: 7, 10, 15, 21

Q: Determine Px and ox from the given parameters of the population and sample size. μ= 44, o = 24, n=…

A: μ=44σ=24N=32

Q: Given that z is a standard normal random distribution, find z for each situation   The area to the…

A: The area to the left of z is 0.9750From the standard normal distribution tableLocate the value…

Q: If the sample size is n=16 what is likely true about the shape of the population?

A: Solution:  Central limit theorem: The central limit theorem state that as the sample size increases…

Q: Given the sample 2, 19, 6, −2, add one more sample value that will neither change the mean nor the…

A: Given data The sample is 2, 19 , 6 , -2

Q: FIND t a n = 15 for the 98% confidence interval for the mean.

A: Provided information that, n=15 Alpha (α)=1-0.98=0.02 α/2=0.01

Q: 2. If the mean and variance of a Binomial distribution are 9 and 6 respectively, find the number of…

A: Step 1: Start with the formulas for mean and variance of a Binomial distribution:Mean (μ) =…

Q: Suppose that you have obtained data by taking a random sample from a population. Before performing a…

A: For a random sample that is selected from a population, the following steps have to be done in order…

Q: Even if an investigated treatment has an effect it is still possible to obtain a sample mean that is…

A: Given Solution:

Q: f the 20th and 60th percentiles of a normal random variables are -4.3 and 15.8, respectively. What…

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Q: If it is known that a town with population 30,000 had 3,170 people who drive a Prius hybrid vehicle.…

A: Solution: The proportion of population who drive a Prius hybrid vehicle is From the given…

Q: Given a normal population with mean = 39 and variance = 16, what is the probability of obtaining an…

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Q: For a normal distribution, identify the z-score location that would seperate the distribution into…

A: Z- Score is the standardized value that provides the exact location of the values of X in the normal…

Q: Use the confidence interval to find the margin of error and the sample mean. (12, 20) O E = 4, X =…

A: confidence interval for mean : (12,20)

Q: Find the estimated standard error for the sample mean for n = 8 and SS= 5042.

A: Given n=8, SS=5042

Q: An experiment consists of rolling a eight-side doe (numbered 1 through 8) and observing the number…

A: Let X be a random variable denoting the the number that appears at the uppermost. x 1 2 3 4 5 6 7…

Q: It is known that the population variance equals 522. What is the sample size that needs to be taken…

A: It is given that:

Q: Assume that the population has a normal distribution. Thirty randomly selected students took the…

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Q: is computed from a sample and is used to estimate a population parameter.

A: 2. Parameter: The population parameter is the number that describes the population. Also, the…

Q: A racing car consumes a mean of 103 gallons of gas per race with a variance of 36. If 38 racing…

A: The probability of the sample mean would be greater than 101.5 gallons is 0.9382 and it is obtained…

Q: calculate the mean and ss for each of the following sample numbers 1,3,4,0

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Q: estimate the population proportion p,what is the minimum sample size we need in order to achieve a…

A: Solution: From the given information, confidence level is 0.95, p=0.1 and E=0.01.

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.