To estimate the mean height of female high school juniors, you take arandom sample of 30 female students and get these results (in inches):72, 51, 67, 68, 61, 69, 58, 56, 60, 5666, 61, 60, 59, 59, 54, 58, 53, 68, 6357, 62, 63, 64, 56, 62, 58, 67, 57, 70If the o is 5.3, based on past research, and you want to construct a 97%confidence interval using (estimate) + (margin of error)= (estimate) ± z*-what's your point estimate of 4?A. .968B. 61.17С. 30O D. 5.4O E. 65

Answered: To estimate the mean height of female…

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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American college students have an average of 4.6 credit cards per student. Is the average different for 20-year-olds who are not in college? The data for the 18 randomly selected 20-year-olds who are not in college is shown below: 3, 4, 3, 0, 6, 2, 4, 1, 5, 5, 0, 2, 3 ,4, 2, 7, 4, 0 Assuming that the distribution is normal, what can be concluded at the 0.01 level of significance? H0: = 4.6 Ha: [ Select ] [">", "<", "Not Equal To"] 4.6 Test statistic: [ Select ] ["T", "Z"] p-Value =[ Select ]["0.025", "0.015", "0.035", "0.005"] [ Select ] ["Fail to Reject Ho", "Reject Ho"] Conclusion: There is [ Select ] ["statistically significant", "insufficient"] evidence to make the conclusion that the population mean number of credit cards held by 20-year-olds who are not in college is not equal to 4.6. p-Value Interpretation: If the mean number of credit cards that 20-year-old non-college students have is equal to [ Select ] ["4.1", "3.6",…
A corporation that maintains a large fleet of company cars for the use of its sales staff is interested in the mean distance driven monthly per sales person. The following table gives the monthly distances in miles driven by a random sample of 15 sales persons: 2560, 2506, 2437, 2476, 2128, 2537, 2023, 2664, 2555, 2552, 2626, 1900, 2691, 1907, 2542 Based on this sample, find a 90% confidence interval for the mean number of miles driven monthly by members of the sales staff, assuming that monthly driving distances are normally distributed. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.) What is the lower limit of the confidence Aa interval? What is the upper limit of the confidence interval?
b. The compensation received by the highest-paid executives of 12 international companies (in $'000) is as follows: 801 820 2215 803 850 856 899 846 902 856 911 947 i. Find the mean and the median compensation of the executives. Comment on the skewness of the distribution of the executives' compensations. 2
2. Dr. Xyz claims that the average salary of workers in Jones is P35,000. A random sample of 100 workers are found that their mean salary is P40,000. H, H,: EXPLANATION :
Consider a random sample of 300 students in a university, 75 of them declared that they like playing football. Compute a point estimate of the proportion of all students who would like to play football.
When dragons on planet Dathomir lay eggs, the eggs are either green or yellow. The biologists have observed over the years that 19% of the eggs are yellow, and the rest green. Next spring, the lead scientist has permission to randomly select 57 of the dragon eggs to incubate. Consider all the possible samples of 57 dragon eggs. What is the mean (μ) number of yellow eggs in samples of 57 eggs?(Please show your answer to 1 decimal place) What is the standard deviation (σ) in the number of yellow eggs in samples of size 57? (Please show your answer to 1 decimal place)
True or False: A professor computed the sample average exam score of 20 students and used it to estimate the average exam score of the 1,500 students taking the exam was an example of inferential statistics. Select one: True False
A random sample of 20 observations drawn from a population are 93, 88, 107, 115, 82, 97, 103, 86, 113, 107, 112, 90, 98, 93, 99, 103, 100, 101, 91, 104. Test the population median is 90 at 5% level of significance.
Ten corvettes between one and six years old were randomly selected from the classified ads of the Arizona republic the following data were obtained where X denotes age in years and y denotes price in hundreds of dollars. x (age) 6,6,6,2,2,5,4,5,1,4 price(100ths) 270,260,275,405,364,295,335,308,405,305 (a).draw a scatter diagram. (B)Find the nearest correlation coefficient r. (C)
Arandom sample of 15 individuals representing three different types of music has been observed for the frequency with which they listen to that music over the month. Fill in the ANOVA table. Be sure to round to the second decimal.

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