e standard deviation of a population of 100 volumes is 60 cm. In the case of "non-refundable selection", find how many units the sample should consist of so that the standard error of the mean is not more than 20 cm? a) 14 B) 36 C) 9

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Q: The distribution os scores on the SAT is approximately normal with a mean of 500 and a standard…

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A: Given, Class interval is 10 Minimum value =21 Maximum value = 77 Range = 83-21 =62 Number of class=…

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A: We have to find given probability.

Q: Compare the scores: a score of 220 on a test with a mean of 200 and a standard deviation of 21 and a…

A: Given The data is as follows: A score of 220 with μ=200 and σ=21. A score of 90 with μ=80 and σ=8.

Q: 6. Exam Scores -A final examination for a Statistics course has a mean of 80 and a standard…

A: We have given that my =80 ,sigma=3 X~N(mu,sigma^2) Z socre=(x-mu) /sigma

Q: 25 - It is known that the average of blood pressure values in a community show normal distribution…

A: Given,   Mean = 130 Standard deviation = 25   The objective is to find the percentage of people with…

Q: WHAT WOULD BE THE EFFECT OF TAKING A LARGE SAMPLE ON THE WIDTH OF THE INTERVAL?   a) the width of…

A: Solution Answer is option (b)

Q: Assume that the duration of human pregnancies can be described by a normal model with mean 269 days…

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Q: The weights of people in a certain population are normally distributed with a mean of 154 lb and a…

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Q: Directions: Given a normal distribution with µ = 410 and o = 50, compute for the corresponding…

A: Note: As per our guidelines we are supposed to answer only 3 subparts of any questions so i am…

Q: a machine package shirt in bags with a mean weight of 3kg. A random sample of 20 bags has a mean…

A: Solution: From the given information, a population mean weight is 3kg, n=20, sample mean weight is…

Q: The standard deviation of the population of IQ score is standardized to be 85 points. Calculate  the…

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Q: state are µ=$13,525 and o-$4,180, respectively. Suppose random samples of 100 are drawn from the…

A: A random sample of size 100 is drawn; n=100 The mean and standard deviation of vehicles is…

Q: A statistics practitioner selected a random sample of 75 observations from a population with a known…

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Q: Globally, women’s heights are normally distributed, with a mean of 65 inches and a standard…

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Q: "The weights of 1,000 children, in average, is 62kg with standard deviation of 16kg. Suppose the…

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Q: The compressive strength of samples of cement can be modeled by a normal distribution with a mean of…

A: From the provided information, Mean (µ) = 6000 kilograms per square centimetres Standard deviation…

Q: The sum of the deviations around the mean is    A) greater than zero if data are right-skewed.…

A: The sum of deviation is the difference between individual data points and central measures such as…

Q: The weight of students in a very large statistics class vary according to a normal distribution with…

A:

Q: 1) The weight of a group of nursing students has a normal distribution, with a mean of 148 pounds…

A: Mean()=148Standard deviation()=22

Q: A company gave their employees a survey to determine the average number of hours they sleep on a…

A: Here Given Mean : μ=50 hoursσ=6 hours X=Employees sleep on week in hour It is Normally distribution.…

Q: For a population with a mean equal to 150 and a standard deviation equal to 25, calculate the…

A: given data,μ=150σ=25standard error of the mean  formula =σn

Q: "The weights of 1,000 children, in average, is 64kg with standard deviation of 18kg. Suppose the…

A: Given that n=1000, mu =64 ,s.d =18 ,p(x<59 ) =?

Q: A livestock company reports that the mean weight of a group of young steers is 1153 pounds with a…

A: Normal distribution is generally denser in the center, and basically less denser at the tails. There…

Q: he mean weight of a breed of yearling cattle is 1123 pounds. Suppose that weights of all such…

A: Normal distribution in the center is generally denser and basically less dense at the tails. There…

Q: It is known that the mean of blood pressure values in a population is 130mmHg, and the standard…

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Q: When the weight of a parcel of oranges was measured, it was seen that the average 200 grams and…

A: Given: Population mean (μ)=200 Population standard deviation (σ)=25 Let X be the weight of a parcel…

Q: For a population with a proportion equal to 0.37, calculate the standard error of the proportion for…

A: The Population proportion isp=0.37The sample size is 40,80,120

Q: The weights of 300 males were measured. The mean weight was 80kg and the standard deviation was…

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Q: Suppose you want to test the claim that μ ≤ 25.6.  Given a sample size of n = 53 and sample mean of…

A: Solution: State the hypotheses. Null hypothesis: H0:µ≤25.6 Alternative hypothesis: H1:µ>25.6

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Q: I need to also know and show the steps on how to use the calculator in order to solve it, along with…

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Q: The standard deviation of a 1200 volume population is 90cm. Find out how many units the sample…

A: 6.

Q: Given a normal distribution with u = 35 and o = 8, find: a) the normal curve area to the right of x…

A: Given Data Population Mean,μ = 35.0 Population Standard Deviation,σ = 8.0  follows…

Q: For a sample of size 36, the standard deviation of the sample mean is 50. In order to cut this…

A: Sample size (n)= 36 Standard deviation = 50   Now,   If standard deviation = 20  Sample size = ?

Q: that the heights of students at a university follow a normal distribution with a mean of 170 cm and…

A: It is given that Suppose that the heights of students at a university follow a…

Q: If the standard deviation of the lifetimes of vacuum cleaners is estimated to be 300 hours, how…

A: 97% ci for mean.  margin of error (E) = 40 σ = 300 n = ?

Q: A livestock company reports that the mean weight of a group of young steers is 1119 pounds with a…

A: Given: μ = 1119 σ = 81 Formula Used; Z-score = X-μσ

Q: The diameter of a steel rod has a normal distribution with a mean of 3.41cm and a standard deviation…

A: Given that, Mean = 3.41 Standard deviation = 0.02

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A: From the provided information, Mean (µ) = 1121 pounds Standard deviation (σ) = 79 pounds Let X be a…

Q: Mean 170 standard deviation 5 we find the heights of 80 people . a) how many would you expect to be…

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Q: 40. For a two-tailed test, the p-value is: A) the area under the curve between the mean and the…

A:

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.