4. A population is normally distributed with a mean of 98 and a standard deviation of 18. What is the mean of the distribution of sample means for this population? b. If a sample of n = 36 participants is selected from this population, what is the standard error of the mean (Om)? c. What is the shape of this distribution of sample means? а.

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A: Solution

Q: 4. Consider that in a population of Filipino adults ages 18 to 65, Body Mass Index (BMI) is normally…

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Q: What proportion of trucks can be expected to travel between 38,000 and 62,000 miles in the year?

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A: Given,mean(μ)=72standard deviation(σ)=10

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A: Given that, Mean = 45 Standard deviation = 10

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Q: 9. A sample of 25 observations has a standard deviation of 5. The sum of the squared deviations for…

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Q: 8, and the sample standard deviation, s, is found to be 4.6. ...

A:

Q: (a) How many reams should the manager expect to use each day? (b) What is the standard deviation of…

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Q: The values of the account receivable for a department store are normally distributed with a…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

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Q: 1. Suppose that we want to estimate to within $1000 the mean salary of all graduates who were…

A: Given,margin of error(E)=1000standard deviation(σ)=5000α=1-0.95=0.05α2=0.025z0.025=1.96

Q: A hypothetical distribution for a population of test scores has a mean of 60.4, a median of 62.8,…

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Q: Assume the sample standard deviation is s=10, what do you conclude?

A: here given, sample mean = 87 n = 25 sample standard deviation  = 10

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A: To find the mean and standard deviation of the sample means for samples of size 100:

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

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Q: VII. The NYC MTA claims the average wait time for an F train after midnight is less than 21 minutes.…

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Q: 4. The results of a state-wide examination of the reading skills of sixth-grade students were…

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Q: ssuming that a sample (N = 504) has a sample standard deviation of 2.26, what is the estimated…

A: Solution: Given information: n= 504 Sample size  s= 2.26 Sample standard deviation

Q: - If a population with µ =72 and o = 8, the distribution of z-scores will have a mean and standard…

A: Given: Mean = µ = 72 Standard deviation = σ = 8

Q: Suppose population 1 is all blue cars sold at used car auctions, and the mean sale price of all such…

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Q: Test the claim that for the adult population of one town, the mean salary is $28,000. If a sample of…

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Q: # 6- A set of data items is normally distributed with a mean of 90 and a standard deviation of 5.…

A:

Q: 2. A machine produces electrical components. 99.7% of the components have lengths between 1.176 cm…

A: A machine produces electrical components. 99.7% of the components have lengths between 1.176 cm and…

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Q: I am confidant that the mean starting salaries of all my econ students is $60,000. If i am right,…

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.