Pumpkin weights have a mean of 18 lbs and a standard deviation of 6 lbs!” Assume that the weight of the basket does not add significantly to the weight. (a) Describe the sampling distribution of ?̅, the mean weight of the pumpkins: (Shape, center, dispersion): (b) If the basket contains 12 pumpkins, what is the probability that the mean weight is less than 20 lbs? (c) If the basket contains 45 pumpkins, what is the probability that the mean weight is more than 20 lbs?

Q: The operations manager of a motor vehicle accessories firm with branches in Limpopo and Durban wants…

A: Given that,mean(x)=355.2standard deviation , s.d1=151.5number(n1)=31mean(y)=265.6standard deviation,…

Q: 3. It was observed that the standard deviation of the number of hours people are glued to their…

A: 3. The provided information is  σ=13.43

Q: A large corporation employs 21,995 individuals. The average income of all employees is $64,372, with…

A: From the given information it is clear that,  Sample size n=180 Average income of all employees is…

Q: A large school district held a district-wide track meet for all high school students. For the 2-mile…

A: x1 = 8.8 s1 = 3.3 x2 = 7.3 s2 = 2.9 n1 = 8 n2 = 8

Q: The article “Unmarried Couples More Likely to Be Interracial” (San Luis Obispo Tribune, March 13,…

A: An article said that 7% of married couples in the united states are mixed racially or ethnically.…

Q: Normal, with mean 70 inches and standard deviation 8 inches. ) If you choose one student at random,…

A: We have given that.   X~N( μ , ?^2 )   μ =6 , ? =2.4  , n= 25   Z-score =( x - μ )/?

Q: 2. The head of a school clinic in a certain elementary school wants to estimate the mean height (in…

A: Given that alpha =0.05,s.d =30 ,M.E = 4

Q: In 1955, Life Magazine reported that a 25-year-old mother of three worked, on average, an 80 hour…

A: From the provided information, Sample size (n) = 71 Sample mean (x̅) = 83 Sample standard deviation…

Q: 1. According to a study done this year by Move.org, the cost of living in San Diego was right skewed…

A: The population mean is 2,665 and the standard deviation is 1344.

Q: average height of a giraffe in 10.3 feet with a standard deviation of 2.5 feet. If you were to…

A: We have given that  Sample size n = 50 Population mean =10.3 Population standard deviation = 2.5

Q: The scores of students on the SAT college entrance examinations at a certain high school had a…

A: Thank you for posting the question. As your question has more than 3 parts, as per the policy, we…

Q: The mean salary of an office clerk in America is $22,000 monthly with standard deviation equal to 5,…

A: Given,mean(μ)=$22,000standard deviation(σ)=$5,000sample size(n)=150

Q: the verac atemer company. 2. The average income of a customer service representative is P 23,000. A…

A: Given that  x̄ = 24000 ,  μ = 23000 , s = 5000 , n = 25

Q: A reading specialist wanted to estimate the mean word length, in number of letters, for an…

A: Given data Sample size ,n=100 Sample mean  x ̅  =4.9 letters Sample SD , s=0.15 letters

Q: Sally spent a lot of time during COVID-19 recording the age of every professional wrestler. The data…

A: We have to identify sampling distribution.

Q: The distribution of new car prices in a certain city is strongly skewed right with a mean of 45…

A: Given that the distribution of new car prices in a certain city is strongly skewed right with…

Q: Suppose that a study of elementary school students reports that the mean age at which children begin…

A: The provided information are: Population mean (µ) = 5.7 Population standard deviation (σ) = 1.2…

Q: According to a study done this year by Move.org, the cost of living in San Diego was right-skewed…

A: Given: Population Mean μ = 2665 Population Standard deviation σ = 1344   Formula Used: Z-score =…

Q: The chair of the operations management department at Quality University wants to construct a p-chart…

A: Given the data as Instructor Number of Failures Prof. A 13 Prof. B 0 Prof. C 11 Prof. D…

Q: The salaries of professional baseball players are heavily skewed right with a mean of $3.2 million…

A:

Q: Mrs. Bracken asks a random sample of 500 adults whether they favor giving vouchers to parents of…

A:

Q: The article “Unmarried Couples More Likely to Be Interracial” (San Luis Obispo Tribune, March 13,…

A: Given that p=0.07(7%) Sample size n=200 Mean of sampling distribution: p=0.07 Standard deviation of…

Q: 2. How is the sample size related to the deviation?

A: We have to define how sample size is related standard deviation

Q: An April 2004 article on HearTheIssues.com stated that Americans watch an average of 4.5 hours of…

A: X¯ ~ N(μx¯, σx¯) Sampling distribution of the sample mean .

Q: reported that the 27-year-old mother of three worked, on average, a 75 hour week. Recently, many…

A: As the population standard deviation is not known, we will use a t-test. The null and alternative…

Q: In 2011, the number of text messages sent and received by teenage girls (ages 12 – 18) was strongly…

A: Hello thanks for your question. Since you have posted a question with multiple sub-parts, we will…

Q: те рreva ng ans 15 years Of age and OIuer was 9.1%6 2011(according to Statistics Canada). 125…

A: The sampling distribution of the sample proportion is approximately normal with at least 5 expected…

Q: According to the National Institute of Health, about 37% of high school seniors have vaped in the…

A: The Sampling Distribution of the Sample Proportion :  If repeated random samples of a given size n…

Q: How many times per day does an American access the internet? Suppose that the distribution of the…

A: Given that, The mean of the sampling distribution is, The standard deviation of the sampling…

Q: A government sample survey plans to measure the total cholesterol level of an SRS of men aged…

A:

Q: A positively skewed population has a mean of μ= 150 and a standard deviation of σ= 10. What is the…

A: Solution: From the given information, µ = 150 and σ = 10.

Q: What is the other term for the standard deviation of the sampling distribution of the sample means O…

A: We have given that the statement about to the standard deviation of sampling distribution of sample…

Q: if a population has a mean  of 75 and a standard deviation of 15    (a) what is the mean of the…

A: Given,sample size(n)=25mean(μ)=75standard deviation(σ)=15

Q: Suppose the true proportion of voters in the county who support a new fire district is 0.35.…

A: Here, n = 145 and p = 0.35.

Q: A hospital president claims that the average Salary of registered nurses at her hospital is more…

A:

Q: Explain why s p is called the pooled sample standard deviation.

A:

Q: An adventure company runs two obstacle courses, Fundash and Coolsprint. The designer of the courses…

A: From the provided information,

Q: Suppose the true proportion of voters in the county who support a new fire district is 0.53.…

A:

Q: How does the sample size affect how close to normal a distribution of either sample means or sample…

A: The larger the sample size, the more close the distribution is to that of a normal distribution. As…

Q: The Chancellor wants you to calculate the sample size needed with a margin of error of 15, 99%…

A: Since we know population standard deviation, use z-distribution to find z-critical value. Find…

Q: Suppose the true proportion of voters in the county who support a new fire district is 0.62.…

A: Solution: From the given information, the true proportion of voters in the county who support a new…

Q: In 1955, Life Magazine reported that the 27 year-old mother of three worked, on average, an 75 hour…

A:

Q: So, if you were a researcher and you desired a small standard deviation of sample means (a "skinny"…

A: The standard deviation of sample mean is:        = ​σ​/√n,     where n is the sample size

Q: A farmer picks pumpkins from a large field. The farmer makes samples of 260 pumpkins and inspects…

A: Solution:From the given information, the sample of pumpkins is 260, in one in50 pumpkins are not fit…

Q: For a large Internet seller their average customer spent $51.28 during the Black Friday sale with a…

A: Solution

Q: Is it worth pursuing a doctoral degree in education if you already have an undergraduate degree? One…

A: There are two independent samples which are doctoral degrees and undergraduate degrees. We have to…

Q: According to a Pew Research Center analysis of census data, in 2012, 20% of American adults ages 25…

A: As given, 20% of American adults ages 25 and older had never been married. That is, the population…

Q: Olson Agriculture company has determined that the weight of hay bales is normally distributed with a…

A: Sampling distribution of sample mean: If the population is normally distributed then the sampling…

Q: What would be the mean of the sampling distribution of all possible sample means obtained from this…

A: Given: μ=5σ=4

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.