the height of a fully growm trees of a specific species is normally  distrubted ,with the mean of 72.5  feet  and standard deviation 5.25 feet. Random samples of size 13 are down  from the population. use the central limit theorem to find the mean and standard error of sampling distrubution.

Q: Companies who design furniture for elementary school classrooms produce a variety of sizes for kids…

A: Given : -

Q: In a county male height is normally distributed with a mean of 175 cm and a standard deviation of 6…

A:

Q: A population of 2000 rods has a mean length 200cm and standard deviation 20cm. What is the mean and…

A:

Q: Samples of size 5 are selected from a manufacturing process. The mean of the sample ranges is .50.…

A: Explanation:Here given the sample size and mean range values  Then find the population of the…

Q: An organization claims that its product has a life of at least 19 days. if the sample size 36,…

A:

Q: For the following situation, find the mean and standard deviation of the population. List all…

A:

Q: A machine used for  filling plastic bottles with a soft drink has a known standard deviation of 0.05…

A: Sampling distribution of sample Mean:   From the central Limit theorem, the sampling distribution of…

Q: A recent study shows that out of 5, 000 people who moved to Arizona, 2, 350 did so to take a new…

A: From the given information, sample size n = 1000. Total number of people moved n(S) = 5000. Number…

Q: Suppose that striped dolphin lengths are normally distributed with a population standard deviation…

A: The formula for the minimum sample size is as follows: Here, zα/2 is the critical value at 95%…

Q: the mean number of minutes for app engagement is 8.2. suppose the standard deviation is 1 minute.…

A:

Q: In the population of drivers, the mean number of traffic violations in the last 10 years is 5.2. In…

A: It is given that Population mean = 5.2 Sample mean = 4.25

Q: If the sample has standard deviation 2.1, what is a reasonable approximation to the range of this…

A: It is given that the standard deviation of the data is 2.1.

Q: Suppose that the operating time in hours from a fully charged iPhone 8 has a mean of 7 hours and…

A: Here it is given that the operating time in hours from a fully charged iPhone 8 has a mean of 7…

Q: A ski gondola carries skiers to the top of a mountain. Assume that weights of skiers are normally…

A: a. Consider a random variable x, that defines the weights of skiers. According to the given…

Q: If the population standard deviation is 1.3, then Find the standard deviation of x for an SRS of…

A: Answer: From the given data, Population standard deviation(σ) = 1.3 Number of observation(n) = 82

Q: Find the minimum sample size needed to be ninety seven percent confident that the true mean is…

A: Given,margin of error(E)=2.3standard deviation(σ)=7.3α=1-0.97=0.03α2=0.015Z0.015 =2.1701

Q: random sample of eight ​people, the mean driving distance to work was 23.6 miles and the standard…

A: Given, sample mean (x̄) = 23.6 sample standard deviation (s) = 5.1 sample size (n) = 8

Q: Determine the minimum sample size needed if we want to estimate the mean age of Camden County…

A: Obtain the required sample size: The given confidence level 100*(1–α)% = 95%. The critical value is…

Q: Among health care workers at a local hospital, the average number of vacation days taken per year is…

A: The mean is 5 and the standard deviation is 2.5.

Q: The amount of bleach a machine pours into bottles has a mean of 36oz. with a standard deviation of…

A: The objective of the question is to find the mean of the sampling distribution of the sample mean.…

Q: living spaces of all homes in a city have a mean of 2050 square feet and a standard deviation of 300…

A: The mean and standard deviation are 20506 and 300, respectively.

Q: A researcher would like to estimate the mean amount of money that a family spends to within $28. If…

A:

Q: The population distribution of the useful lifetime of a cutting blade of a concrete saw has mean 50…

A: From the provided information, Population mean (µ) = 50 hours Standard deviation (σ) = 9 hours Let X…

Q: If the population standard deviation is 6.8, then Find the standard deviation of x for an SRS of 64…

A: Answer: From the given data, Population standard deviation σ = 6.8 Sample size (n) = 64

Q: Suppose a random sample of 4949 measurements is selected from a population with mean 6060 and…

A: We have given thatMean() = 60Standard deviation() = 10Sample size (n) = 49

Q: In a metal fabrication process, metal rods are produced to a specified target length of EXACTLY 10…

A: From the information, The sample size is, n = 25 The sample mean is, x¯=9.8 feet The sample standard…

Q: The average length of a trout caught from a certain lake is 10.4 inches, with a standard deviation…

A: Given that the population mean= 10.4 inches and standard deviation of 1.5 inches

Q: The percent fo Coloradans that own a Subaru is 56%. If you were to take a random sample of size 70,…

A: We have given that,  Let X be the random variable from binomial distribution with probability (p) =…

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: The dispersion of the copper determination in the seawater sample is 2.24%. How many parallel…

A:

Q: The population standard deviation for the heights of dogs, in inches, in a city is 5.7 inches. If we…

A:

Q: An analyst needs to estimate the mean length of time it takes workers from a department to come back…

A: It is given that the confidence level is 0.90, the population standard deviation is 14 minutes and…

Q: cm square plots, then randomly selected twenty of the fifty square plots and measured the size of…

A: Convenience Sampling: In this method of sampling, the sample units are selected according to the…

Q: For a particular process that is in good statistical control, the mean standard deviation value,…

A:

Q: The mean number of travel days per year for salespeople employed by three hardware distributors…

A:

Q: The published proportion of traffic fatalities attributed to motorcycle accidents is 0.14. A…

A:

Q: in a population of Yorkshire hogs, sample statistics indicate the following: Average Days to 250…

A: The question is about normal distribution.Given :Population average days (  ) = 160Population…

Q: A grocer finds that the cantaloupes in his store have weights with mean 0.7 kg and standard…

A: Given, Mean weight of cantaloupes is 700 gm. Standard deviation is 53 gm

Q: ppose that at Yellowstone National Park, they want to estimate the population mean weight of the…

A:

Q: The SAT scores X are normally distributed with mean 146 and standard deviation 43, if 8 SAT scores…

A: Answer: From the given data, Sample size(n) = 8 mean (μ) = 146 Standard deviation(σ) = 43

Q: The diameter of a brand of ping-pong balls is aproximately normally distributed, with a mean of 1.30…

A: Mean = 1.3Standard Deviation = 0.04n = 16The diameter of a brand of ping-pong balls is approximately…

Q: Assume the average amount of caffeine consumed daily by adults is normally distributed with a mean…

A: The detailed solution is as follows below:

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.