On the basis of a random sample of 100 men from a particular province in USA, a 95% confidence interval of the mean height of men in the province is found to [176.50-178.26]. What is the value of the standard deviation of the population from which this sample was drawn?

Q: The mean tar content of a simple random sample of 25 unfiltered king-size cigarettes is 21.6 mg,…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: A random sample is selected from a normal population with a mean of µ = 30 and a standard deviation…

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A: Given data,μ=190σ=22P(X>160)=?

Q: If I have a mean of 60 dollars and a standard deviation of 10 dollars how would I find the IQR.  I…

A: Given Information Mean µ = 60 Standard deviation σ = 10 The curve follows Normal Distribution…

Q: In a random sample, the weights of 24 Black Angussteers of a certain age have a standard deviation…

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Q: On average, the parts from a supplier have a mean of 35.8 inches and a

A: Given information: μ=35.8σ=2.4 The probability that a randomly selected part from this supplier will…

Q: Suppose that a delivery truck, while on its route on six randomly selected days, made an average of…

A: The provided sample means are shown below: Xˉ1=14\bar X_1 = 14  Xˉ2=12\bar X_2 = 12 Also, the…

Q: A researcher knows from past studies that the standard deviation of the time it takes to inspect a…

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Q: A random sample is selected from a normal population with a mean of  = 30 and a standard deviation…

A: a. Null hypothesis: µ=30. Alternative hypothesis: µ≠30. Here, the sample mean, M is 33. Population…

Q: Based on surveys of random samples from people in a town, the proportion of people interested in a…

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Q: Nationally, social workers average 10.2 years of experience. In a random sample, 203 social workers…

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Q: A random sample of 40 adults with no children under the age of 18 years results in a mean daily…

A: given that,mean(x)=5.67standard deviation , s.d1=2.39number(n1)=40mean(y)=4.14standard deviation,…

Q: A random sample is selected from a normal population with a mean of μ=50 and a standard deviation of…

A: 1) To determine if the sample mean is sufficient to conclude that the treatment has significant…

Q: A random sample of 64 bags of white cheddar popcorn weighed, on average, 5.23 ounces with a standard…

A: Given data  n=64  x¯ =5.23  s=0.24 P value = ? H0:μ=5.5H1:μ<5.5

Q: A random sample of 50 wheat producers from the Earth Kingdom are selling their product at an average…

A: From the provided information,

Q: If X is a normal random variable with a standard deviation of 10, then 3X has a standard deviation…

A: Given: X is a normal random variable with standard deviation equals to 10.

Q: The mean tar content of a simple random sample of 25 unfiltered​ king-size cigarettes is 20.8 ​mg,…

A: Given: n1=25x¯1=20.8s1=3n2=25x¯2=13.0s2=3.9

Q: An article in a journal for college instructors recently stated that college students spend on…

A: We have to find given probability..

Q: A sample of 53 female workers and another sample of 75 male workers from a state produced mean…

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Q: A manufacturer of precision measuring instruments states that the standard deviation of the…

A: Introduction: Denote the true population standard deviation of the precision measuring instrument as…

Q: An engineer is comparing voltages for two types of batteries (K and Q) using a sample of 71 type K…

A: Given, nk = 71x¯k = 9.33sk = 0.153nQ = 50x¯Q = 9.68sQ = 0.366     To find, test the claim that the…

Q: On average, the parts from a supplier have a mean of 97.5 inches and a standard deviation of 12.2…

A: On average, the parts from a supplier have a mean of 97.5 inches and a standard deviation of 12.2…

Q: A 1987 study found that the distribution of weights for the population of males in the United States…

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Q: An electrical firm manufactures a​ 100-watt light​ bulb, which, according to specifications written…

A: According to Chebyshev’s theorem, the formula is given as follows:

Q: Suppose a math professor that teaches differential calculus has found that the average course grade…

A: Denote μ as the true average score grade over the years.

Q: On the basis of a random sample of 100 men from a particular province in USA, a 95% confidence…

A: The 95% confidence interval for the population mean height of men, will signify that, with 95%…

Q: The scores of a random sample of 100 high school students on a standardized mathematics test in a…

A: Given Data : Sample Size , n= 100 Sample Mean , x̄ = 78.0 population standard…

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Q: The proportion of defective microcomputer disks of a certain kind is believed to be anywhere from…

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Q: In a random sample of 75 eighth grade students scores on a national mathematics assessment test has…

A: GivenMean(x) = 266sample size(n)=75standard deviation(σ)=34α=0.09

Q: A random sample is selected from a normal population with a mean of μ = 30 and a standard deviation…

A: From the provided information, Population mean (µ) = 30 Standard deviation (σ) = 8 Sample mean (M) =…

Q: The mean tar content of a simple random sample of 25 unfiltered king-size cigarettes is 21.1 mg,…

A: Given Information: Unfiltered king size cigarettes: Sample size n1=25 Sample mean x¯1=21.1 Sample…

Q: The proportion of positive COVID-19 cases in Pakistan in May 2020 based on a sample of 100 patients…

A: Given Data: n=100 Mean=0.05 Standard deviation=0.1   z-value given =2

Q: From a sample of 32 eruptions, the mean duration time of the eruptions was 3.32 minutes with a…

A: Chebyshev’s rule: The Chebyshev’s rule states that, for any quantitative data set and any real…

Q: An engineer is comparing voltages for two types of batteries (K and Q) using a sample of 3939 type K…

A: From the provided information,

Q: The weights of a certain brand of candies are normally distributed with a mean weight of 0.8554g and…

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Q: A certain machine makes electrical resistors having a mean resistance of 50 Ohms and a standard…

A: Given,sample size(n)=49mean(μ)=50standard deviation(σ)=3

Q: The mean tar content of a simple random sample of 25 unfiltered king-size cigarettes is 21.4 mg,…

A: The following information has been provided: Sample Mean 1 (Xˉ1)(\bar X_1) = Unfiltered King…

Q: A TV manufacturer claims that the lifespan of its regular TV sets is longer than 10 years with a…

A: The hypothesis for the test is given below.

Q: A simple random sample of 2828 filtered​ 100-mm cigarettes is obtained from a normally distributed​…

A: Given information Sample size, n = 28 Sample standard deviation, s = 0.22 Significance level, α =…

Q: A researcher reports that the average salary of assistant professors in a certain state is $42,000.…

A: Hypothesized Population Mean, μ0 = $42000 Sample size, n = 30 Sample mean , x¯ = 43260 sample…

Q: A random sample of 40 adults with no children under the age of 18 years results in a mean daily…

A: We have to create 95% confidence interval for difference in means.

Q: The weights of a certain brand of candies are normally distributed with a mean weight of 0.8573 g…

A: Let , X be the weight of certain brand of candies. The random variable X follows Normal distribution…

Q: A random sample of 40 adults with no children under the age of 18 years results in a mean daily…

A: We will solve this using formula for 95% confidence level

Q: The mean tar content of a simple random sample of 25 unfiltered​ king-size cigarettes is 21.4 ​mg,…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…