## Solution Library

#### Number Of Classes In Frequency Histogram And The Intervals In Frequency Distribution

Question 1. When developing a frequency distribution the class (group), intervals must be  A. Large B. Small C. Whole numbers D. Mutually exclusive E. Equal   2. If there are 60 values in a data set, how many classes should be created for a frequency histog ... Read More

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#### Calculate Missing Frequency And Variance

Question   1. Consider the following frequency distribution. What is the missing value?   Bin                  Frequency             &nb ... Read More

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#### Calculation Of Standard Deviation And Chebyshevâ€™s Theorem Application

Question 1. According to a survey of the top 10 employers in a major city in the Midwest, a worker spends an average of 413 minutes a day on the job. Suppose the standard deviation is 26.8 minutes and the time spent is approximately a normal distribution. What are the times that approximately 99.73 ... Read More

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#### Calculation Of Standard Deviation And Median

Question 1. In a hearing test, subjects estimate the loudness (in decibels) of sound and the results are: 68, 67, 70, 71, 67, 75, 69, 62, 80, 73, 68 What is the median?  A. 67 B. 70 C. 68 D. 69 E. 80 Put items in order: 62,67,67,68,68,69,70,71,73,75,80 Median = [11 ... Read More

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#### Two Mutually Exclusive Events Having Positive Probabilities

Question 1. Two mutually exclusive events having positive probabilities are ______________ dependent.  A. Never B. Sometimes C. Always   2.  If P(A) > 0 and P(B) > 0 and events A and B are independent, then: A. P(A) = P(B) B. P((A|B)) = P(A) C. P(A B) = 0 ... Read More

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#### Prepare Histogram, Frequency Polygon And Ogive Curve For The Given Data

Question Consider the following data on distances traveled by people to visit the local amusement park. Distance                   Frequency 1-8 miles         &nb ... Read More

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#### Calculation Of Cumulative Frequency

Question Math test anxiety can be found throughout the general population. A study of 120 seniors at a local high school was conducted. The following table was produced from the data. Complete the missing parts. (Work step by step to solve this puzzle. Round the frequencies to the nearest whole num ... Read More

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#### Calculation Of Relative Frequency And Cumulative Frequency And Plotting Ogive Curve

Question The number of items rejected daily by a manufacturer because of defects for the last 30 days are: 22, 21, 8, 17, 25, 20, 18, 19, 14, 13, 11, 6, 21, 23, 4, 19, 11, 12, 16, 16, 10, 28, 24, 6, 21, 20, 25, 5, 17, 9 . Complete this frequency table for the above data showing columns for Frequenc ... Read More

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#### Calculation Of Correlation And Plot Scatter Plot

Question Umbrella Corporation requires that its production employees to pass safety training courses before they are allowed to work with dangerous chemicals. This year, Umbrella decided to offer free test preparation services to five of its employees who took the test. After taking the exam, the e ... Read More

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#### Intercept Data In Scatter Plot

Question As part of the first-year evaluation for new salespeople, Ada, the sales manager for Umbrella, estimates the second-year sales for each salesperson based on his or her sales for the first year. Using data from company records going back several years, she constructs the following scatter p ... Read More

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#### Making And Testing Hypothesis With Chi-Square Test

Question A business analyst is studying trends related to university majors in the United States. Specifically, she is interested in the enrollment proportions for various majors, and which majors are the most popular. According to the National Center for Education Statistics (NCES), the distributi ... Read More