Suppose you collect the following sample from a normal population with μ = 50 and o = 5: [49 61 50 58 45 59 45 63 46] What is the standard deviationof the sampling distribution of the sample mean?Select one:a. 1.67b. 2.43c. 5d. 7.30

The population distribution is specified to be distributed Normally.The population mean, μ=50.The…

Answered: Suppose you collect the following…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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2. This is a sample of 10 random seasons in the National Hockey League, Wayne Gretzky scored 50% more points than anyone who ever played professional hockey. He accomplished this amazing feat while playing in 280 fewer games than Gordie Howe, the previous record holder. Here are the number of games Gretzky played during each season.45 70 73 73 74 78 79 80 80 82 a. Find the mean and standard deviation for the data above. (You do not need to show work, use technology as needed especially for standard deviation).b. Find the five-number summary.
Is the difference between the mean annual salaries of registered nurses in State A and State B equal to $9,000? To decide, you select a random sample of registered nurses from each state. The results of each survey are shown. Assume the population standard deviations are o, = $8360 and o, = $7580. At a = 0.01, what can you conclude? Registered Nurses in State A Registered Nurses in State B 75,710 70,710 35 n2 30 What are the null and alternative hypotheses for this test? O A. Ho: H1-H2>9,000 Hai Hy - H2 S9,000 O B. Ho: H1 - H259,000 Ha: H1- H2>9,000 O C. Ho: H1 -H2<9,000 Ha: H1 - H2Z9,000 O D. Ho: H1 - H2 = 9,000 O E. Ho: H1 -H2 # 9,000 Hai Hy -H2 = 9,000 O F. Ho: H1 -H9,000 Hai H1 - H2 <9,000 Ha: H1 -H2 #9,000
You are given the following information obtained from a random sample of 5 observations. Assume the population has a normal distribution 20 18 17 22 18 You want to determine whether or not the mean of the population from which this sample was taken is equal to 21. Determine the test statistic value?
Oil field studies have shown that permeability measurements are having a normal distribution with a mean of 68 µD and a standard deviation of 10 µD. Determine the permeability that is exceeded by 90% of the samples. Select one: O a. 80.9 O b.55.1 C. 80.8 O d. 55.2
The mean age at which females marry is 24.6. The standard deviation is 3.2 years. Find the corresponding z score for 27. The average weekly earnings in dollars for various industries are listed below. Find the percentile rank of the value 736. 804 736 659 489 777 623 597 524 228 For the same data, what value corresponds to the 40th percentile? The data show a sample of states' percentage of public high school graduation rates for a recent year. Construct a boxplot for the data, and comment on the shape of the distribution. 79 82 77 84 80 89 60 79 91 93 88
On a unit test in a statistics class, the teacher determines that the mean test grade was 77.5 with a standard deviation of 5.2. What is the test grade, rounded to the nearest whole number, with a z-score of 2.4? 65 83 90 95
Is the difference between the mean annual salaries of registered nurses in State A and State B equal to $10,500? To decide, you select a random sample of registered nurses from each state. The results of each survey are shown. Assume the population standard deviations are o, = $8337 and o, = $7633. At a = 0.01, what can you conclude? Registered Nurses in State A Registered Nurses in State B 75,695 70,695 %3D %3D X1 X2 n1 30 n2 25 What are the null and alternative hypotheses for this test? A. Ho: H1 - H22 10,500 Ha: H1 - H2 10,500 Ha: H1 - H2s 10,500 O F. Ho: H1 - H2 S 10,500 Hai H1 - H2 > 10,500 Determine the critical value(s). (Round to three decimal places as needed. Use a comma to separate answers as needed.)
Given Samples A and B below, Sample A: 4.9 4.6 4.8 2.7 4.2 2.0 2.1 3.1 5.0 Sample B: 3.2 2.4 3.8 4.2 4.9 5.0 3.6 4.4 2.3 a. Calculate the mean and standard deviation for each sample. Sample A: X A = 0.00; s A = 0.00 Sample B: x B= 0.00 ; s B = 0.00 Round to two decimal places if necessary b. Calculate the coefficient of variation for each sample. Sample A: CV A = 0.00% Sample B: CV B = 0.00% Round to two decimal places if necessary c. Which sample is more variable? Sample A Sample B Neither sample is more variable than the other
Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the range, variance, and standard deviation for the sample data. Given that these are the top 10 salaries, do we know anything about the variation of salaries of TV personalities in general? 3939 3737 3636 3030 2222 2121 1818 1414 13.613.6 12.712.7
What proportion of a normal distribution corresponds to z scores greater than -0.82? Question 10 options: 0.2061 0.2939 0.5000 0.7939

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Suppose you collect the following sample from a normal population with μ = 50 and o = 5: [49 61 50 58 45 59 45 63 46] What is the standard deviation of the sampling distribution of the sample mean? Select one: a. 1.67 O b. 2.43 O c. 5 O d. 7.30