2. A civil engineering firm issues every new employee with a safety helmet. Four different sizesare available numbered 1 to 4. A random sample of 40 employees required the followingsizes:QUI Size1342UTM UTM 6114123133221UTD28 UTM14431123UTM322212434UTM UTM13i.UTM 82Construct a 90% confidence interval for the proportion of employees requiring size3.UTM UTM11.The firm stated that at least 32% of the employees wear size 2 helmet. Determine at1% level of significance, whether the data provide sufficient evidence to support thefirm's claim.2

A test statistic is a number calculated from the values of the sample or if any value(s) from the…

Answered: 2. A civil engineering firm issues…

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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Three randomly selected children are surveyed. The ages of the children are 3, 5, and 10. Assume that samples of size n= 2 are randomly selected with replacement from the population of 3, 5, and 10. Listed below are the nine different samples. Complete parts (a) through (d). 3,3 3,5 3,10 5,3 5,5 5,10 10,3 10,5 10,10 . a. For the population, find the proportion of odd numbers. The proportion is (Round to three decimal places as needed) b. Find the proportion of odd numbers of each of the nine samples, then summarize the sampling distribution of the medians in the format of a table representing the probability distribution of the distinct proportion values ce! Sample Proportion Probability Tool (Type integers or simplified fractions.) c. Find the mean of the sampling distribution of the sample proportion of odd numbers. The mean is (Round to three decimal places as needed ) Next Activane
Three randomly selected households are surveyed. The numbers of people in the households are 4, 5, and 9. Assume that samples of size n= 2 are randomly selected with replacement from the population of 4, 5, and 9. Listed below are the nine diff Print samples. Complete parts (a) through (c). 4,4 4,5 4,9 5,4 5,5 5,9 9,4 9,5 9,9 D a. Find the median of each of the nine samples, then summarize the sampling distribution of the medians in the format of a table representing the probability distribution of the distinct median values. Sample Median (1) Probability (2) (3) (4) (5) (6) (Type integers or fractions. Use ascending order of the sample medians.) b. Compare the population median to the mean of the sample medians. Choose the correct answer below. O A. The population median is equal to half of the mean of the sample medians. O B. The population median is not equal to the mean of the sample medians (it is also not half or double the mean of the sample medians).
1
11 Degrees of freedom is 21, first sample size is 12, thus; the second sample size will be: Select one: a. 11 b. 8 c. 9 d. 10
Q1-5: Given the following data from a sample of sizen= 7 12 7 49073 The third qoartile is: Select one: O a. 4 O b. 7 O c. 8 O d. 9
and o from the given parameters of the population and sample size. Determine u = 84, o = 18, n = 81 .....
a) State whether the following is a discrete or continuous random variable. i. Number of seeds in a tomato ii. The number of litres of water used per household iii. The ages of children in a preschool b) Determine the sampling methods used in each of the scenarios below i. Select every 9th candy bar from a production line to check its weight ii. Group t-shirts by colors and select t-shirts at random from within each group in proportion to the number of t-shirts that make up that group. iii. Use random number tables to select 15 students from a class. iv. Select 8 white cars, 5 blue and 3 red cars. v. Name one advantage of the sampling method in ii)
Three randomly selected households are surveyed. The numbers of people in the households are 4, 5, and 9. Assume that samples of sizen=2 are randomly selected with replacement from the population of 4, 5, and 9. Listed below are the nine diff Prin samples. Complete parts (a) through (c). 4,4 4,5 4,9 5,4 5,5 5,9 9,4 9,5 9,9 O a. Find the median of each of the nine samples, then summarize the sampling distribution of the medians in the format of a table representing the probability distribution of the distinct median values. Sample Median (1) Probability (2) (3) (4) (5) (6) (Type integers or fractions. Use ascending order of the sample medians.) b. Compare the population median to the mean of the sample medians. Choose the correct answer below. O A. The population median is equal to half of the mean of the sample medians. O B. The population median is not equal to the mean of the sample medians (it is also not half or double the mean of the sample medians). OC. The population median is…
please answer ONLY d through f. I submitted this question twice but someone keep answering a through c when i specified D through F. thanks!

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