8.A 96% confidence interval for the proportion of the labor force that in unemployed in a certain city is(0.07, 0.10). Which of the following statements about this interval is true?a. The probability is 0.96 that between 7% and 10% of the labor force is unemployed.b. About 96% of the intervals constructed by this method will contain the true proportion ofunemployed in the city.In repeated samples of the same size, there is a 96% chance that the sample proportion will fallbetween 0.07 and 0.10.d. The true rate of unemployment lies within this interval 96% of the time.e. Between 7% and 10% of the labor force is unemployed 96% of the time.Normally distributed with a

Given The data is as follows: The 96% CI for the proportion of the unemployed labor force is (0.07,…

Answered: 8. A 96% confidence interval for the…

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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Example: Suppose the mean of the number of unproductive days for a certain large segment of the population in a given year is 5.4 and the standard deviation is 2.8 days. Find the probabilities that average number of unproductive days of a random sampling of 49 from this environment is: a. more than 6 days b. between 4 and 6 days.
In a certain barangay, LGU distributes "ayuda" benefits to each family with a mean of 3,200 pesos per month with a standard deviation of 850 pesos. If a random sample of 32 families are taken, what will be the probability that the average ayuda benefits distributed is between 3,000 and 3,500 pesos? A. 9.18% B. 88.55% C. 90.82% D. 2.28%
18 O 16 O 20 42 QUESTION 9 The service time for customers coming through a checkout counter has mean 50 seconds and standard deviation 6.8 seconds. Find the probability that the average service time for 64 passengers to get service will be between 48.4 and 51.6 seconds. O 0.0301 O 0.1897 0.9699 O 0.9399 QUESTION 10 A research worker wants to determine the average time it takes a mechanic to rotate the tires of a car, and she wants to be able to assert with 95% confidence that the mean of her sample is off by at most 0.3 minutes. If she can presume from past experience that the actual time follows normal distribution with a standard deviation of 1.5 minutes, how large the sample will she have to take? O 96 97 9. Save All Answers Click Save and Submit to save and submit. Click Save All Answers to save all answers. O O O O
A population has a mean of 50 and a standard deviation of 19 If a random sample of 36 is taken, what is the probability that the sample mean is each of the following? a . Greater than 50. b. less than 52. C. less than 49. d.between 45.5 and 54.5 e and Between 50.5 and 51.1
Given the following data for an imaginary superhero universe: Flying Telepathy Super Strength Female 53 19 26 Male 54 2 16 Distribution of Super Power by Gender What is the empirical probability that a randomly selected superhero will have telepathy?
4. The cost of unleaded gasoline in the Bay Area once followed an unknown distribution with a mean of $4.59 and a standard deviation of $0.10. Sixteen gas stations from the Bay Area are randomly chosen. We are interested in the average cost of gasoline for the 16 gas stations. What's the approximate probability that the average price for 16 gas stations is over $4.69? а. b. Find the probability that the average price for 30 gas stations is less than $4.55. C. Sketch graphs for a and b
A student was analyzing a data set that was Normally distributed with a mean of . She calculated the z-score of a score z in the data set and looked up this value on a z-table (the same z-tables we have been using in class). The table gave a value of 0.4918 in this instance. Which of the following statements is true. O Any score in this data set has a 49.18% chance of being between 2 and z. O The score has a probability of 49.18. O The standard deviation of this data set is 0.4918 O The score x is 0.4918 standard deviations away from the mean.
(5) You take a random sample from some population and form a 98% confidence interval for the population mean, a. Which quantity is guaranteed to be in the interval you form? A. 0 B. u C. D. 0.98
. Buck randomly selects 38 basketball shoes from the Shoe Warehouse and finds the mean prie to be $66.88 with a standard deviation of $5.62. Construct a 99% confidence interval for the population standard deviation o, and find the x2 values used in the calculation. A. ($4.31, $7.93) with xỉ = 18.586 and x = 62.833 B. ($4.27, $7.78) with xỉ = 19.286 and xỉ = 64.181 C. ($1.82, $3.34) with xỉ = 18.586 and x = 62.833 D. ($4.27, $7.78) with xỉ = 19.960 and xi = 59.893 E. ($18.58, $62.88) with xỉ = 18.586 and x = 62.833 %3D %3D reject
25. Given the following data for an imaginary superhero universe: Flying Telepathy Super Strength Female 27 99 39 Male 27 95 57 Distribution of Super Power by Gender What is the empirical probability that a randomly selected superhero will have super strength? Answer in decimal form. Round to 3 decimal places as
A production line in a factory, assembles laptops. A random sample of assembly time of 49 laptops has been drawn from this factory. Suppose, the population distribution has a mean assembly time of 30 minutes and standard deviation 7 minutes. What is the assembly time that 90% of sample means are less than that time? [ Select one: a. None of the others O b. 28.36 c. 31.28 d. 28.72 e. 31.64
Let?1, ?2,… , ?? be a random sample from the normal distribution with unknownmean,? and known variance, ?2. Using a sufficient statistic for ?, find the UMP test in the class of unbiased tests for testing,?0: ?= ?0 against ?1: ? ≠ ?0 at significance level ?.

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