A survey asks a random sample of 1500 adults in Ireland if they support an increase in the plastic bag levy. Let p˄ denote the proportion in the sample that says they support the increase. Suppose that 30% of all adults support the increase. The standard deviation of the sampling distribution is?

Q: An officer of a certain agency claims that the mean monthly income of a family that lives in a…

A: The random variable monthly income of a family follows normal distribution. We have to write the…

Q: with a mean of µ = 70 and a standard deviation of σ = 10, what is the probability of obtaining a…

A: Given Data : Population Mean,μ = 70 Population Standard Deviation,σ = 10

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: How many standard deviations to either side of the mean must we go to ensure that, for any data set,…

A:

Q: Assume the sample size of the population is 20,000  n = 800, p = 0.749 determine the standard…

A: Givenp=0.749n=800Assume the sample size of the population is 20,000

Q: a) In the analysis of a barrel of powder, the standard deviation of the sampling operation is ±4%…

A: a) The standard deviation of the sampling operation is ± 4% or ± 0.04 and the standard deviation of…

Q: Let X denote the lifespan for a randomly selected fly. Suppose the mean and the standard deviation…

A: let X: the lifespan for a randomly selected fly  and mean of X=E(X)=μ=25 days    standard deviation…

Q: Consider a sample with a mean of 30 and a standard deviation of 5. Use Chebyshev's theorem to…

A:

Q: According to a survey by Harris Interactive conducted in February 2009 for the charitable agency…

A:

Q: Given a population where p = 0.10, find the standard deviation of the samping distribution when n =…

A: It is given that p is 0.10 and n is 500.

Q: A survey asks a random sample of 1500 adults in Ohio if they support an increase in the state sales…

A: From the given information, n =1500 and p =0.40.

Q: (d) If the sample size is n= 16, what is the standard deviation of the population from which the…

A: Using central limit theorem.

Q: In a two - tailed test, given that the population mean is 40 with a standard deviation of 2.5. A…

A:

Q: Suppose ? has a distribution with a mean of 20 and a standard deviation of 3. Random samples of size…

A: Mean = 20 standard deviation = 3 n = 49

Q: According to an officer in the Health Care Financing Administration, the average annual expenditure…

A: Given : Claim : The average annual expenditure on toiletries is RM110 per person in Malaysia.

Q: Compute the standard deviation of the sampled proportions if p=.4 and n=500. Round to three places.

A: We want to find standard deviation  X~Binomial(n=500,p=0.4)

Q: A survey showed the following probabilities of having X number of dogs per household X = number 1 3…

A:

Q: Suppose that the average amount of ice cream that children eat at birthday parties is 3.6 oz, with a…

A: a. Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: According to a college survey, 22% of all students work full time. Find the standard deviation for…

A:

Q: A normally distributed population has a mean of 88 and a standard deviation of 10. When a sample of…

A: Here the given population mean is 88 and population standard deviation is 10.

Q: A college professor noted that the grades of his students in an introductory statistics class were…

A: Given,mean(μ)=28.50standard deviation(σ)=9

Q: Suppose that, on average, electricians earn approximately u= $55,800 per year in the United States.…

A: Given: σ=11900n=4 The standard deviation for the sampling distribution of the sample mean is…

Q: A hypothetical distribution for a population of test scores has a mean of 60.4, a median of 62.8,…

A: According to the given information in this question We need to find standard deviation of sampling…

Q: Given a population where p = 0.10, find the standard deviation of the samping distribution when n =…

A: It is given that p is 0.10 and n is 2,000.

Q: In a certain province, the set of recorded midday temperature readings for the month of April is…

A: Given that 10.03% of recorded temperature readings were under 32.32 °C, and that 33% were above…

Q: The following are observations on the number of monthly Zoom sessions attended by a sample of 10…

A: Standard deviation is a measure of dispersion and important measure of dispersion. It used to…

Q: According to the IRS, the average refund in the 2011 tax year was $3,109. Assuming that the standard…

A: Given information- Sample size (n) = 50 Population Mean µ = $3,109 Standard deviation (σ) = $874

Q: 4) According to one pollster, 59 % of people are afraid of flying. Suppose that a sample of size 26…

A:

Q: Given a population where p = 0.10, find the standard deviation of the samping distribution when n =…

A:

Q: A USA Today poll asked a random sample of 1012 U.S. adults what they do with the milk in the bowl…

A: Given Data: n=1012 p=0.7

Q: Assume that, for a given test, the population mean is µ=50 and the population standard deviation is…

A: Mean = 50 Standard deviation = 10 Sample size, n = 25

Q: Is the standard deviation of the sample a good estimate of the variation of salaries of TV…

A: Sample standard deviation is always an unbiased estimate of population sd.

Q: Assume that, for a given test, the population mean is µ=50 and the population standard deviation is…

A: given: Population mean (μ)=50 Population standard deviation (σ)=10 Sample mean (M)=54 Sample size…

Q: At a small local college, 78% of all students are receiving some kind of financial aid. A local…

A: The formula of the standard deviation of the sampling distribution is,

Q: Given that X is normally distributed with a mean of 50 and a standard deviation of 4, determine P(45…

A:

Q: For a sample of n = 100, what is the standard deviation of the binomial distribution with p = .20…

A: Given : It is asked to find the of n = 100 With the given standard deviation p = 0.20 and q = .80

Q: Let ?̅ be the mean of a random sample of size 65 drawn from a population with a mean of 75 and a…

A: Solution-: Let, X= be the random variable Given: μ=75,σ=19,n=65 We find, (a) Mean of  X¯=? and…

Q: Assume that the heights of adult puffins are normally distributed, with a mean of u = 16.1 inches…

A: According to our guidelines we can solve only the first three-part of the question. ize (n) = 16

Q: Suppose the people living in a city have a mean score of 35 and a standard deviation of 9 on a…

A: A normal distribution has a bell shaped which is centred at mean. The standard normal distribution…

Q: The average student loan debt for collge graduates is$25,950. Suppose that that distribution is…

A:

Q: A recent analysis of the number of rainy days per month found the following outcomes and…

A: Solution x P(x) x*P(x) x2 x2*P(x) 3 0.4 1.2 9 3.6 4 0.2 0.8 16 3.2 5 0.4 2 25 10

Q: If the average low temperature of a winter month in Rochester, NY is 18∘18∘ and the standard…

A: According to the Chebyshev's theorem, 1-(1/k²) of the observation fall within k standard deviation…

Q: P(x) 0.186 1 0.362 0.295 3 0.128 0.027 4 5 0.002

A: From the provided information, The mean for the numbers of sleepwalkers in group of five can be…

Q: Suppose that we will take a random sample of size n from a population having mean and standard…

A: Here given sample size , population mean and population standard deviation from which calculating…

Q: Compute the standard deviation of the sampled proportions if p=.8 and n=50. Round to three places.

A: Given,n=50p=0.8

Q: A random sample of 12 students showed the following time (in hours) of sleep 4.5 5 5.5 6 6 7 7.5 7.5…

A:

Q: Assume that the heights of adult puffins are normally distributed, with a mean of μ=μ= 15.9 inches…

A: Given data, μ= 15.9  σ= 2.7  n=28 mean of the distribution of x¯  =?

Q: Given a test that is normally distributed with a mean of 100 and a standard deviation of 12, find:…

A:

Q: A survey showed the following probabilities of having X number of dogs per househol X = number of…

A: Obtain the value of mean. The value of mean is obtained below as follows: The value of mean is…

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.