In 2018, Pennsylvania was one of 11 states that did not collect race data during traffic stops. California produces an annual report on traffic stops in the state. The following is the number of profiling complaints reported in eight different police and sheriff departments in California in 2018.³275, 67, 35, 1, 21, 35, 4, 15**a.** Determine a 90% confidence interval for the mean number of profiling complaints for all California police and sheriff departments. Show or explain your thinking.**b.** Interpret the meaning of the confidence interval.**c.** Answer at least one of the following questions and explain your thinking:- What opportunities does this dataset provide for discussions about systemic racism?- What further questions might you want to explore or research?- What interests or concerns you?- How does this dataset inform what actions you might take in your life?

n=8 no of complaints:275 ,67 , 35 , 1, 21 ,35 ,4,15To determine 90% CI we have

Answered: In 2018, Pennsylvania was one of 11…

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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A study was conducted on the average commuting distance of students at College. The study found that the first sample of thirty students has an average commute of 23.1 miles with a sample standard deviation of 12.47 miles. The commuting mileages for a second sample of 30 students are below. a) Find the mean, median and mode for the second sample of students. b) Find the range, variance and standard deviation for the second sample students. c)
A random sample of 25 Berkeley College students was asked, “How many hours per week typically do you work outside the home?” Their responses were as follows: {0, 0, 15, 20, 30, 40, 30, 20, 35, 35, 28, 15, 20, 25, 25, 30, 5, 10, 30, 24, 28, 30, 35, 15, 15} a. Find the mean, the median and the mode of hours worked outside the home for the sample data. Show all your work to justify your answer. b. Use the above data to complete the following table summarizing the number of hours worked outside the home. Express the relative frequency as a percent. Class Tally Frequency Relative Frequency 0-10 11-20 21-30 31-40 Total c. Find the five-number summary of the hours worked outside of the home by the 25 Berkeley College students.
1. A furniture store reduces the prices of sofas in an autumn sale. The number of sofas sold during the 19 days of the sale were: 2. 3. 41, 44, 48, 55, 40, 44, 45, 42, 55, 55, 36, 36, 51, 47, 41, 38, 43, 48, 53 Work out the median and the lower and upper quartiles for the number of sofas sold in the sale. The frequency table shows information about the number of children living in each house on a street. Number of children Frequency Mean daily temperature, t(°C) Frequency a. b. a. b. C. d. 0 Time, t (minutes) Frequency 19 Work out the mean, median and modal values of the number of children in each house in the street. 1 16 23 13 The grouped frequency table shows information from the large data set about the mean daily temperature in Heathrow between May and October 2015. 14 2 3 0
9
Consider a sample of 10 observations with the following values: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20. Calculate the sample variance and standard deviation.
1. A furniture store reduces the prices of sofas in an autumn sale. The number of sofas sold during the 19 days of the sale were: 41, 44, 48, 55, 40, 44, 45, 42, 55, 55, 36, 36, 51, 47, 41, 38, 43, 48, 53 Work out the median and the lower and upper quartiles for the number of sofas sold in (3) the sale.
The following are distances (in miles) traveled to the workplace by 15 employees of a certain hospital. 22, 36, 15, 5, 11, 27, 34, 2, 14, 37, 7, 6, 24, 16, 20 Find 10th and 75th percentiles for these distances.
Construct a sample (with at least two different values in the set) of 5 measurements whose mean is equal to the median. If this is not possible, indicate "Cannot create sample".
Consider a sample with data values of 26, 24, 22, 18, 32, 34, 29, and 24. Compute the percentiles (to 2 decimal, if decimals are necessary). 20th 25th 65th 75th
2. In the past, approximately 24% of workers said they brought work home with them, at least occasionally. Recently, in a random sample of 400 employed people, 104 said that they bring work home with them, at least occasionally. a. Test whether the true proportion of all employees who bring work home with them has changed from 24%. Use the 5% level of significance.

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