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Chapter 1 Assignment 1
Determine whether each statement is true or false. { O
Tme 1. Probability is used as a basis for inferential statistics.
Qt; . The heights of the mountains in the state of Alaska are an example of a var
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Chapter 2 Pages 98-99 Assignment
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1. In the construction of a frequency distribution, it is a good idea to have overlapping class limits, such
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Determine whether each statement is true or false.
2. Histograms can be draw
Chapter 3 Pages 176 177 ii 1 - 23, 25, 28, 29, 31, 33C
Determine whether each statement is true or false.
1. When the mean is computed for individual data, all values in the data set are used.
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2. The mean cannot be found for grouped data when there
Elementary Statistics
4.2 The Addition Rules for Probability
Mutually Exclusive Events: Two events are mutually exclusive events if they cannot occur at the same time.
Addition Rule 1: When two event A and B are mutually exclusive, the probability that A
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ELEMENTARY STATISTICS - MATH 143
Chapter 1 & 2 Test
Matching. Put the letter of each word in the blank in front of its correct denition.
[K Biased Data Population
X Control Group Probability
,(C./ Data Qualitative Variable
(5/ Descriptive Statis
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1. A negative relationship between two variables means that for the most part, as the x variable increases, the
y va riabie increases
True @
2. A correlation coefficient of -1 implies a perfect linear relationship between the variab
Chapter 7 Assignment PP 395 396
Determine whether each statement is true or false.
1. Interval estimates are referred over point estimates since a condence level can be specified.
We
2. For a specific confidence interval, the larger the sample size, the s
Chapter 4 Assignment #1 Pages 246 - 247 % 0
etermine wheher statement is true or feése.
1% Subjective probabiiity has Fittie use in the {88% worid.
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2. Classics? prohabéiéty uses a frequency {Eistrihution to compute probabiéitées.
False,
3. in ciass
Chapter 5 Aaségnment Pages 295 296
1%
etermine whether each statement is true er faise.
1. The expecteci vaiue of e tandem variebie can be thought (if as a ieng~run average.
True
2. The number ef courses a student is taking this semester is an exampie of
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Chapter 6 Assignment PP 350 351 I 6/
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Determine whether each statement is true or false.
1. The total area under .a normal distribution is infinite.
False
2. The standard normal distribution is a continuous distribution.
3. All vari