A population has a mean u =78 and a standard deviation o = 24. Find the mean and standard deviation of a sampling distribution of sample means with sample size n = 36. H; = (Simplify your answer.) o = (Simplify your answer.)

Q: On a standard measure of hearing ability, the mean is 300 and the standard deviation is 20. Give the…

A: Given data ,Mean u=300S.D σ=20

Q: A variable x has a mean, µ, of 26 and a standard deviation, o, of 2. What is the standardized…

A: Given data, Mean = 26 Standard deviation = 2

Q: The proportion of men who smoke cigarettes in the US is 0.23.  A researcher took a sample of 200 men…

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Q: Gracia, an ALS student, obtained a z-score of 1.35 in an achievement test that is normally…

A: Given : Z-score=1.35 Mean=85 Standard deviation =5

Q: When n 2 30 and the population standard deviation is not known, what is the appropriate…

A: Given : n≥30 population standard deviation is not known.

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A:

Q: A sample has a mean M = 55. For the sample, the standard deviation is ? = 12 and the score…

A:

Q: WEIGHTS IN KG OF 10 PREGNANT LADIES, WERE RECORDED IN ANTENATAL CLINIC. THE MEAN WEIGHT WAS 78KG AND…

A: Given Data: Sample Mean=78 n=10 Sample Variance=45

Q: From a normally distributed population, we took a simple random sample of 700 students with a mean…

A: Sample size n=700 Sample mean x¯=640 Population Standard deviation σ=300

Q: The variance of a data set is 10. What is the standard deviation of the data set? O 10 O 3.16 O 100…

A: We can find the standard deviation as below

Q: At one university, the mean distance commuted to campus by students is 16.0 miles, with a standard…

A: Given: x~N(μ,σ)μ=16σ=4.1

Q: 37. Which of the following formulas is used to calculate the population standard deviation? A. o =…

A: Given that  We want to tell formula of population standard deviation  Note: According to bartleby…

Q: e a sample of 25 hamburgers and weigh them, we find that the mean is 0.57 pounds and the standard…

A: Given that  (a) sample size (n) =25     Sample mean (x¯) = 0.57 pounds     Standard deviation (s)…

Q: The length of pregnancies are normally distributed with a mean of 266 days and a standard deviation…

A: Assume a random variable X, that defines the length of pregnancies.

Q: Breathing rates for humans can be as low as 4 breaths per minute or as high as 70 or 75 for a person…

A: (a) Obtain the fraction of all students would have breathing rates in the interval from 9.7 to 14.3…

Q: In a normal distribution, 99.7% of the data fall within how many standard deviations of the mean? A.…

A: Solution-: In a normal distribution, 99.7% of the data fall within how many standard deviations of…

Q: The proportion of a population with a characteristic of interest is p=0.37. Find the mean and…

A:

Q: If a product has a mean demand of 80 with a standard deviation of 10, if the customer holds 100…

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Q: The standard deviation of a variable is 15. If a sample of 100 individuals is selected, what size is…

A:

Q: Find the (a) mean, (b)median, (c) mode, (d) midrange, and (e) range (f) the standard deviation using…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: An unkwon distribution has a mean of 100, a standard deviation of 100, and a sample size of 100. Let…

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Q: With individual lines at the checkouts, a store manager finds that the standard deviation for the…

A: Here, the data is based on the waiting time. Hence, only one population is involved in the study.…

Q: A random sample of 21 waiting times (in minutes) before patients saw a medical professional in a…

A: We have to perform f test for testing that if one variance is more than other.

Q: a. Determine the mean, variance, and standard deviation of X b. What is P (X < 2.5)?

A:

Q: The price-earnings (PE) ratios of a sample of stocks have a mean value of 10.75 and a standard…

A: Empirical Relationship: The empirical rule states that if a distribution is unimodal and symmetric…

Q: If a sample mean is 1,200 and the sample standard deviation is 350, determine the standardized value…

A: The standardized value corresponding to a score of x is, (x - x̄)/s, where x̄ is the sample mean and…

Q: Given: N=6 Emshish. Test Scores X= 60,70,75,80,85,90 Find the PopuLation Vaniamce and standard…

A: We have given that,  English test score are; 60, 70, 75, 80, 85, 90 And n= 6 Then,  We will find the…

Q: A population has a mean  u=21 and standard deviation o=11 Find the z-score for a population value of…

A: Given, x = 40 μ = 21σ = 11

Q: Which of the following is not needed to compute a t statistic? a.           A hypothesized value…

A: The value of the population variance or standard deviation is not needed to compute a t statistic.

Q: If the weights of newborn babies are normally distributed with a mean of 2950 grams and a standard…

A: Given, X~Nμ,σ  where μ=2950 grams    and σ=340 gramsfind P(x&lt;2610)=?

Q: The IQs of applicants to a certain college are approximately normally distributed with a mean of 112…

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Q: Complete the sentence below. The standard deviation of the sampling distribution of x, denoted o;,…

A:

Q: Sample A: 10, 20, 30 Sample B: 80, 90, 100 Sample C: 1,095; 1,105; 1,115     (a) Find the mean and…

A: Given:         Sample A:10, 20, 30        Sample B:80, 90, 100        Sample C:1,095; 1,105; 1,115…

Q: On a measure of artistic ability, the men for college students in new zealand is 150 and tthe…

A: Given mean = 150Standard deviation = 25The Z score is calculated using the below mentioned formula…

Q: What symbol is used for the standard deviation of a population? O a. X-bar O b.H O C. S O d. o

A: Standard deviation: The positive square root of the mean square of the deviations taken from the…

Q: The standard deviation of a sample is inversely proportional to the square root of its sample size.…

A:

Q: a normal population has a mean of 28 and a standard deviation of 5. what proportion of the…

A: It is given that mean and standard deviation are 28 and 5, respectively.

Q: If a data value has a z-score of 3.00 and the mean of the distribution is 100 with a standard…

A: 1) Given data, z=3 μ=100 σ=15 X=?

Q: Consider the following sample data. Sample A: Sample 8: Sample C: 1,e20; 1,024; 1,028 7, 11, 15 65,…

A: Give Sample data is :  Sample A 7 11 15 Sample B 65 69 73 Sample C 1020 1024 1028 Formula…

Q: The price-earnings (PE) ratios of a sample of stocks have a mean value of 12.75 and a standard…

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Q: A random sample of 100 selected from a population with a standard deviation of 10 yielded a mean =…

A: Given that, Mean = 225 Standard deviation = 10 Sample size = 100

Q: The starting salaries of individuals with an MBA degree are normally distributed with a mean of…

A: Given information- Population mean, µ = $40,000 Population standard deviation, σ = $5,000 We have to…

Q: A population has a mean of 75 and a standard deviation of 8. A random sample of 800 is selected. The…

A: Given that the population has mean 75 and SD 8. A random sample of size 800 is selected. The sample…

Q: In an examination, the mean grade is 81 and the standard deviation is 6. Find the Z-score of the…

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Q: Suppose a population has a mean weight of 180 pounds and a standard deviation of 25 pounds. A sample…

A: Given,mean(μ)=180standard deviation(σ)=25sample size (n)=100

Q: Complete the table below and find the range, IQR, and the standard deviation of the following data.…

A: Given data, 17,12,20,24,28,30

Q: The standard deviation of a variable is 15. If a sample of 100 individuals is selected, what size…

A: The standard error of mean is, SE = σ/√n, where σ is the standard deviation and n is the sample…

Q: Which of the following is the correct formula for the margin of error of a population mean where the…

A: Introduction: It is required to identify the margin of error of a population mean for unknown…

Q: By studying the standard deviation fomula, given below, explain why the standard deviation of a set…

A: Option (C) The values of x-x is always greater than  or equal to 0. This is the correct answer…