DIecval1,46621A@23. The mean for the SATS for all high school students was 500, with a standard deviation of 100.75 students from Cerritos were tested and they produced a mean of 510.a. Who are the groups being compared/tested?What is the dependent variable?b. What are the null and research hypotheses?c. what are the numbers needed for the z statistic?--F2WSd. What is the z statistic?e. For a two tailed test at .05 significance, the critical area is +/- 1.96. What decision do wemake?e. For a two tailed test at .05 significance, the cutoff is +/- 1.96, what decision do we make?#3n80F3E$ 4aF4RD F%59F5TGMacBook Air^6CF6Y&7HKF7U*8J5DIIF8K

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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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c. Analyzing delivery records for 18 customers from "Jalwa" tailoring company, you found their mean delivery to be 11.53 days with a standard deviation of 4.83 days. Which tailoring company had more variation in their delivery records? Shawapna Tailoring Company OJalwa Tailoring Company O Equal variation OCan not be calculated
If the mean speed for a major league fast ball is 90 miles per hour and the standard deviation is 5 miles per hour, what would the standardized score be for a pitch that is 97 miles per hour? O 0.4 4.0 1.4 O 1.0
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. Find the mean, median and mode. b. If the value 15.75 was incorrectly written as 45.75, what measure of central tendency will be affected? Support your answer. c. Compute for the semi-interquartile range,absolute deviation, variance and standard deviation of test.
A researcher finds the following sample values: 2, 8, 6, 2, 7, 3, 4, 4, 5, 6, 7 At the .03 level, is there evidence to indicate the mean differs from the population mean of 2.15? 1. Critical Value (start with negative and separate with a comma if there are 2) 2. Test statistic 3. 3-decimal p-Value 4. Where is the test statistic on the graph Put: L-Left, M-Middle, R-Right
What is the Sample Skewness for the following numbers:mean of 106.89 , median of 87, and standard deviation of 54.36?
1. The mean age for licensed physicians in the United States is 51.5 years. A government officialrandomly selects 700 licensed physicians and computes their mean age to be 50.9 years.a. Which value is the parameter and which the statistic? b. Is it unreasonable that the mean of the 700 physicians is different than 51.5? Explain.
A. What is the mean, median and mode? Separate answers with a single comma, i.e. 3.000,3.000,3.000 b. What is the standard deviation and sample variance? separate answers with a comma, i.e. 3.000,9.000 c.What is the largest value, smallest value and the sum of values? Separate answers with a comma, i.e. 4.543,11.345,46.000
If the standard error for a sample of size 50 is ?=135.21s then the standard error for the mean ?s which of the following: 2.70 135.21 19.12 67.36
Q7: what is the answer for both parts to this question, answer choices are provided in the pictures
42. The speeds of vehicles on a certain part of a highway are normally distributed with a mean of 60 mph and a standard deviation of 6 mph. Use the Empirical Rule to answer the following questions. a. Approximately what percentage of vehicles travel at a speed between 54 mph and 66 mph? b. Approximately what percentage of vehicles travel at a speed greater than 72 mph? c. Approximately what percentage of vehicles travel at a speed not greater than 78 mph?
please answer the first 3 and explain the reason for the answer.

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