Assume the average income of workers in jordan equal 400 JD, a sample of 500 workers are taken and found that the sampling error is 10 and the standard deviation equal 5 ,what is the value of the sample mean ?

Q: If you want to be 99% confident of estimating the population mean to within a sampling error of ± 5…

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Q: From sample sizes of 36 adults find the proportion of sample means having values of at least 170.

A: Here Given  Sample size=n=36  Population mean=μ=162 Population SD=σ= 58

Q: At a computer manufacturing company, the actual size of computer chips is normally distributed with…

A:

Q: If the standard error (σX) of the mean distribution is 10 and the sample size is 25, then what is…

A: Given information Standard error of the mean distribution = 10 Sample size = 25

Q: Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

A:

Q: Assume that the mean and standard deviation of a sample 10 units respectively. if the sample size is…

A: Sample size is n=25, sample standard deviation is 10 and mean is 10. The critical value is 2.0639…

Q: From the empirical rule we can deduce that, for any distribution, 95% of the observations fall…

A:

Q: ​Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

A: We have to find test statistics..

Q: In Hidalgo County, Texas, 80% of those eligible for jury duty were Mexican- Americans. Assuming that…

A: Obtain the mean for the numbers of Mexican-Americans. The mean for the numbers of Mexican-Americans…

Q: At Intel, the sizes of processor chips have a mean of 1 cm with a standard deviation of 0.2 cm.…

A:

Q: Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

A: Solution: State the hypotheses. Null hypothesis: H0: µ=69 Alternative hypothesis: H1: µ≠69

Q: Suppose the number of dollars spent per week on groceries is normally distributed. If the population…

A: Given information: Population standard deviation, σ is 7 dollars. Margin of error, E is 3 dollars.…

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: 5. If you want to be 85% confident of estimating the population mean sampling error of +5 and the…

A: At 85% confidence level, the z value is 1.44 which can be obtained by using the standard normal…

Q: A researcher is interested in estimating the average monthly salary of bank managers in Bulacan. He…

A: Solution-: Given: σ=8500$2000,M.E.=E=1150,c=0.99 We find sample size needed =?

Q: Since the area under the normal curve within two standard deviations of the mean is 0.95, the area…

A: We have given that,  P(-2<Z<2) = 0.95 Then,  P(Z>2) = ?

Q: A researcher claims that the mean of the salaries of elementary school teachers is greater than the…

A: Given: The descriptive statistics given is as follows

Q: If you want to be 99% confident of estimating the population mean to within a sampling error of ±20…

A:

Q: the population standard deviation is 15, how large a sample is necessary to have a standard error…

A: Given  Population standard deviations σ=15, standard error=se>8

Q: Suppose that the mean of a set of data is 50.2 and the standard deviation is 4.2.  Assume that the…

A: Given  μ=50.2, σ=4.2, h=5.1  We want to find the new mean and standard deviation.

Q: If the manager of a bottled water distributor wants to​ estimate, with 99​% ​confidence, the mean…

A:

Q: An advertising executive wants to estimate the mean amount of time that consumers spend with digital…

A: a) The sample size is 117 and it is obtained below: From the given information, the population…

Q: Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

A: It is given that the claim is "The mean pulse rate​ (in beats per​ minute) of adult males is equal…

Q: If you want to be 99% confident of estimating the population mean to within a sampling error of ±6…

A: Obtain the sample size needed.   The sample size needed is obtained below as follows : Use EXCEL…

Q: A manufacturer claims that the mean weight of its ice cream cartons is 10 ounces with a standard…

A: The random variable is weight of ice cream cartons. The population mean is 10 ounces. The population…

Q: If you want to be 95% confident of estimating the population mean to within a sampling error of +6…

A:

Q: Suppose the mean blood glucose of a population of adults is 162 with a standard deviation of 58.…

A:

Q: Suppose a population that has mean 90 and standard deviation 20. How many observations, n, should…

A:

Q: Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

A: From the provided information, Population mean (µ) = 69 Sample size (n) = 181 Sample mean (x̅) =…

Q: Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69   bpm. For a…

A: GivenThe mean pulse rate in claim = 69 beats per minuteThe sample size = 129standard deviation =…

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

A:

Q: A consultant wants to estimate the average income of all the baby boomers in NYC. From prior…

A:

Q: ​Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

A:

Q: Miss Romero noted that the mean scores of a random sample of 15 Grade 8 students who had taken a…

A: Given: Sample size, n=15 Let PE denote point estimate Sample mean, x¯=80.5sample standard deviation,…

Q: Suppose that we will randomly select a sample of 106 measurements from a population having a mean…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: Assume the annual day care cost per child is normally distributed with a mean of $7000 and a…

A: Given information: Given that the annual day care cost per child is normally distributed with mean m…

Q: According to the Census Bureau, the mean number of people in a typical American household in 2010…

A: It is given that the mean number of people in a typical American household in 2010 was 2.6 with a…

Q: A random sample of 100 pumpkins is obtained and the mean circumference is found to be 40.5 cm.…

A: The summary of statistics is, The type of test is two tailed test

Q: In general, the standard error of the sampling distribution is __________the standard deviation from…

A: We know that, Standard error is given by, SE= sigma/√n Where sigma is standard deviation and n is…

Q: Based from the record, the mean weight of the newborn babies is 4.8 lbs with a standard deviation of…

A: Given that  Population Mean=4.8  Standard deviation=0.75 Sample size=60

Q: Suppose that blood chlorine concentration (mmol/L) has a normal distribution with mean=98 and…

A: Sampling distribution is the probability distribution of  a sample statistic (sample mean, sample…

Q: The board of examiners that administers the real estate broker's examination in a certain state…

A: Given data: Mean = 494 Standard deviation = 72 To find: The passing score

Q: A survey found that the average hotel room in New Orleans is $88.42 and the average room rate in…

A:

Q: Calculate the standard error for a sample mean when the population standard deviation is 250.1 and…

A: here given population standard deviation,σ=250.1 sample size , n=10,823   formula for standard…

Q: In order to have the standard error of the mean be 6, one from a would need to take a sample of size…

A: Given ,standard error=6Standard deviation (σ)=42

Q: If you want to be 95% confident of estimating the population mean to within a sampling error of ±3…

A: Given that, Critical values: Using the z-table, the critical value at 95% confidence level for a…

Q: A travel analyst claims that the mean price of a round trip flight from New York City to Los Angeles…

A: Solution:

Q: If you want to be 95​% confident of estimating the population mean to within a sampling error of ±4…

A: We are interested in the finding sample size for the given margin of error and confidence level.

Q: Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

A: Suppose, X be the pulse rate​ (in beats per​ minute) of adult males. and X follows Normal…

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.