77.7, 84.8, 79.4, 84.0, 99.6, 93.6, 89.4, 97.2 a. What is the mean percentage of clockwise swimming for Southern Hemisphere dolphins? b. What is the 95% confidence interval for the mean time swimming clockwise in the Southern Hemisphere dolphins?

Q: To test the intelligence of 10th class boys and girls in a Higher Secondary School, a sample of 83…

A: We have given that  Sample size n1=95 , n2=83 Sample mean xbar1 =29.91  xbar2 =40.92 Standard…

Q: The following sample data are from a normal population: 10, 8, 12, 14, 13, 11, 7, 5. a. What is the…

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Q: A 90% confidence interval for the population mean ?is 18 <u< 24, What is the sample mean

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A: Given data: 7.0, 1.2, 6.4, 5.4, 2.1, 4.4, 2.9, 2.3, 1.75, 1.6, 1.5, 1.5, 1.4, 1.1, 0.8.

Q: The following sample data are from a normal population: 10, 8, 12, 15, 13, 11, 6, 5. What is the…

A: Given data is10,8,12,15,13,11,6,5sample size(n)=8sample mean(x¯)=10standard…

Q: Calculate a ninety-nine (99) percent confidence interval for µ, where n = 100, sample mean = 38, and…

A:

Q: A 95% confidence interval for the true mean population value, P, is given by:

A: The confidence interval is defined as Point estimate ± Margin of error

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Q: What value should be reported as the mean?

A: Given, Values 4.63 4.58 4.82 4.31 4.67 4.6

Q: A sports shop selects a random sample and records the sales of items made in China and those made in…

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Q: Suppose you add 2 days to each datum in the duration of hospital stay. a. What is the effect on the…

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Q: 08. A sample of 352 subscribers to Wired magazine shows the mean time spent using the Internet is…

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Q: The following sample data are from a normal population: 10, 8, 12, 15, 13, 11, 6, 5. a. What is the…

A: Given, random sample of size 8. the sample is 10, 8, 12, 15, 13, 11, 6, 5

Q: find quartile deviation for given data  15,56,89,74,56,32,21,45,96,77,32,3,48,56,75

A:

Q: The following random sample was selected from a normal distribution.   1,17,5,3,19,5,17,3,10,14…

A: We have given that, A random sample of size 10 was selected from a normal distribution with data,…

Q: The following random sample was selected from a normal distribution: 20, 3, 19, 18, 12, 5, 8, 15,…

A: This question requires more accurate results, Hence I will use excel to solve this question.…

Q: Does the sample size n affect the standard deviation of all possible sample means? Explain your…

A: According to central limit theorem, for large sample (&gt;30) or if the population follows normal…

Q: The following data sets contain information about the number of times per month different groups of…

A: we have given that  different group of individual purchased coffee at a coffee shop.

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Q: Twenty-four car salespeople were sampled to see how many cars they sold in a month; the following…

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Q: 3) The management of an amusement park wanted to determine the amount of waiting time for the park's…

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Q: 3. Find the mean, median, mode, and Standard deviation of the following data: 15, 11, 18, 9, 15, 18,…

A: The mean can be calculated as follows:

Q: Using the accompanying Accounting Professionals data to answer the following questions. a. Find and…

A: a. Given that, Sample size n=20 Sample mean years of service x¯=15.55 Sample standard deviation…

Q: Adult men (20-30 years old) tend to watch sports on television daily. A random sample of 30 young…

A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any…

Q: The following sample data are from a normal population: 10, 8, 12, 15, 13, 11, 6, 5. a.  What is the…

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Q: What is the standard deviation of the following sample data? 38,27,39,29,41,42

A:

Q: The following random sample was selected from a normal distribution: 7, 9, 18, 1, 14, 9, 10, 9, 20,…

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Q: what is the mean and standard deviation of the following sample:  18, 1, 5, 1, 5

A: Solution:The mean is obtained below:The sample mean is 6.

Q: In the campaign against smallpox a doctor inquired into the number of times 150 people aged 16 and…

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Q: The following sample data are from a normal population: 10,8 ,12,14 ,13,11 7,5 a. What is the point…

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Q: A national random sample of 20 ACT scores from 2010 is listed below. Calculate the sample mean and…

A: The sample mean is calculated as follows: Mean=∑xn        =29+26+...+1820        =41720…

Q: 14 clients took a test, which has a national mean of 24.0. Use the following data to construct a 95%…

A: Given: n =14 mean = 24 to construct 95% confidence interval about population mean

Q: Find Quartile Deviation for the following data. 10, 13, 9, 6, 4, 9, 18, 8, 7, 5, 14

A:

Q: For the following data list, what fraction of the observations are within one standard deviation of…

A: Empirical rule which explains the range of three sigma where which all the observations lie in the…

Q: A national random sample of 20 .4 ACT scores from 2010 is listed below. Calculate the samplemean and…

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Q: Find the standard deviation for the given sample data. 2, 5, 9, 13, 17, 20

A: Solution-: We find the standard deviation of the given data

Q: 12.What is the sample size needed if the margin of error is 30 and the standard deviation of 45 with…

A: (12)  We have given that,  Confidence level (C.I) = 98% , standard deviation (σ) = 45 and margin of…

Q: 1. Using hand calculations, calculate the mean, median, mode, range, IQR, and standard deviation for…

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Q: (a) Calculate and interpret a 95% confidence interval for population mean cadence. (Ro

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Q: A study was conducted for the number of sunny days for the month of June in San Diego for the past…

A: Note: Hi there! Thank you for posting the question. As there are multiple sub parts, according to…

Q: find sample standard deviation for given data  12,15,63,96,78,85,64,45,25,35,14,15,46

A: The formula of the sample standard deviation is,

Q: 7,11,12,15,31,22

A: Here 1st we define the formula for standard deviation then solve this question.

Q: In sample standard deviation,(n - 1) is called degree of freedom, why?

A: The average of the sample variances for all possible samples must be equal to the population…

Q: The following sample data are from a normal population: 10, 9, 12, 14, 13, 11, 7, 4. a. What is the…

A: Definitions: Mean(average): It is calculated by sum of observations divided by number of…