derie Gill·30-22 6-Bde2.4 The Empirical Rule - Practice ProblemsC.0.15%d.2.35%C.b. What percent is more than 173?13.5%0-Zo p-101. Given a mean of 165 and a standard deviation of 4, use the empirical rule to answer thefollowing questions:What percent is less than 161?What is the 84th percentile?34% 34%What percent is between 157 and 169?b. What percent is more than 67?d. What is the 16th percentile?Y #+18 0+20What percent is between 65.5 and 73?13.5%2. Given a mean of 70 and a standard deviation of 1.5, use the empirical rule to answer thefollowing questions:72a. What percent is less than 71.5?hoe2.35%!butio0.15%that

Z is known as standard normal variable and value of it's probability is calculated using standard…

Answered: derie Gill -30-22 6-в 2.4 The Empirical…

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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15. The average length of a blue whale is 88 feet with a standard deviation of 11 feet. Use this information to answer the following questions:a. What percent of blue whales are longer than 100 feet?z = __________, percent = __________b. What percent of blue whales are shorter than 79 feet?z = __________, percent = __________c. What percent of blue whales are between 75 and 100 feet long?z1 = __________, z2 = __________, percent = __________
1. What is the range of the data shown in the table below? 10 3.3 2.5 2 2. What is the mean? 3. What is the median? 4. Why are the range and standard deviation classified as measures of spread? 5. Why are the mode, median and averages classified as measure of central tendency?
IQ scores have a bell-shaped (mound shaped) distribution with a mean of 100 and a standard deviation of 10. Using the Empirical Rule, answer the following questions. a. What percentage of IQ scores are between 70 and 130? b. What percentage of IQ scores are less than 100? c. What percentage of IQ scores are between 90 and 110?
Find the standard deviation for the following data set. 2, 2, 2, 5, 5, 6, 6, 8, 8, 9 A. 2.49 B. 2 C. 5 D. 6.21 Which is the correct answer?
Please no written by hand solution and no img The IRS was interested in the number of individual tax forms prepared by small accounting firms. The IRS randomly sampled 47 public accounting firms with 10 or fewer employees in the Dallas-Fort Worth area. The following frequency table reports the results of the study. Number of Clients Frequency 15 up to 40 2 40 up to 65 12 65 up to 90 21 90 up to 115 8 115 up to 140 4 Estimate the mean and the standard deviation. (Round squared deviations to nearest whole number and final answer to 2 decimal places.) Mean Standard deviation The IRS was interested in the number of individual tax forms prepared by small accounting firms. The IRS randomly sampled 47 public accounting firms with 10 or fewer employees in the Dallas-Fort Worth area. The following frequency table reports the results of the study. Number of Clients Frequency 15 up to 40 2 40 up to 65 12 65 up to 90 21 90 up to 115 8 115 up to 140 4 Estimate the mean and the standard deviation.…
Consider the following sample data. Sample A: 5, 8, 11 Sample B: 64, 67, 70 Sample C: 1,015; 1,018; 1,021 (a) Find the mean and standard deviation for each sample. (b) What does this exercise show about the standard deviation? multiple choice The idea is to illustrate that the standard deviation is not a function of the value of the mean. The idea is to illustrate that the standard deviation is a function of the value of the mean.
10. On a history exam, Roberto had a score of 72, which was exactly 3 standard deviations below the mean. The standard deviation for the exam is 4. a. What score was 2 standard deviations above the mean? b. What percent of the scores were at least 88? 72 c. What score represents the mean? d. What percent of the scores were between 80 and 88?
1. The College of Knowledge gives an admission qualifying exam. The results are normally distributed with a mean of 500 and a standard deviation of 100. The admissions department would like to accept only students who score in the 65th percentile or better. Complete the chart below, and then determine which students would qualify and what score is associated with the 65th percentile. Which students qualify for admission? Student score Z-Score Percentile 530 570 650 800 540
The ages of undergraduate students at two universities (one in the east and one in the west) are being compared. Researchers want to know if there is a difference in the mean age of students at the two universities. The population standard deviations are known. The following data shows the results of samples collected at each institution: School Location n (sample size) sample mean ( ) population standard deviation West 33 25.78 6.29 East 35 23.16 7.52 What is the value of the test statistic for the previous problem? (Enter your answer as a positive value even if you calculated a negative test statistic value i.e. if you calculated -1.311 you should enter 1.311). Round your answer to 3 decimal places.
Which of the following are measures of central tendency? Four answers correct. 1. Arithmetic mean 2. The second quartile 3. Variance 4. Median 5. Interquartile range 6. Standard deviation 7. Range 8. Mode 9. Coefficient of variation

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