1. Suppose that the mean of A is 360 and the standard deviation of A is 40. The mean of B is 45 and the standard deviation of B is 5? Which statement below is true? a) A has a more dispersed distribution than B b) B has a more dispersed distribution than A. c) A and B are equally dispersed.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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4. Last month, Nancy purchased gasoline from 3 different gas stations. The following table shows the price per
litre and the number of litres of gasoline that she purchased. Determine the average price per litre that Nancy
Gas Station
Husky
Esso
Shell
paid for the gasoline last month.
Price per Litre ($) Number of Litres Purchased
1.60
20
1.30
50
1.40
30
a) $1.38
f) $39.3023
b) $1.4083
g) $32.3256
c) $40.4819
h) $39.5181
d) $1.40
) $1.39
e) $1.43
i) $1.3667
5. Suppose you are given the question: "At Max tire sales, the 5% of the tires they sell are defective. If 8
tires are drawn randomly from the inventory, what is the probability that 2 of them are defective?" If
you had to answer this question, what type of distribution should you use?
a) Discrete uniform probability
b) Poisson Probability Distribution
c) Binomial Probability Distribution
d) Hypergeometric Probability Distribution
Transcribed Image Text:4. Last month, Nancy purchased gasoline from 3 different gas stations. The following table shows the price per litre and the number of litres of gasoline that she purchased. Determine the average price per litre that Nancy Gas Station Husky Esso Shell paid for the gasoline last month. Price per Litre ($) Number of Litres Purchased 1.60 20 1.30 50 1.40 30 a) $1.38 f) $39.3023 b) $1.4083 g) $32.3256 c) $40.4819 h) $39.5181 d) $1.40 ) $1.39 e) $1.43 i) $1.3667 5. Suppose you are given the question: "At Max tire sales, the 5% of the tires they sell are defective. If 8 tires are drawn randomly from the inventory, what is the probability that 2 of them are defective?" If you had to answer this question, what type of distribution should you use? a) Discrete uniform probability b) Poisson Probability Distribution c) Binomial Probability Distribution d) Hypergeometric Probability Distribution
1. Suppose that the mean of A is 360 and the standard deviation of A is 40. The mean of B is 45 and the
standard deviation of B is 5? Which statement below is true?
a) A has a more dispersed distribution than B
b) B has a more dispersed distribution than A.
c) A and B are equally dispersed.
2. The scatter diagram depicts 7 sample points for the pair, price and quantity.
Given this scatter diagram, the correlation coefficient must be:
a) close to zero
Price (S/unit)
b) close to 1
c) close to 2
d) close to -1
e) close to -2
f) close to 0.5
g) close to -0.5
h) equal to 1
) equal to -1
j) equal to 2
k) equal to -2
80
60
40
20
20
40
80
60
Quantity (units)
3. The annual interest rates earned over the last 3 years were 15%, 27% and 1%. Given this information,
what was the average annual interest rate over this period?
a.
0.14333 or 14.333%
b. 0.21454 or 21.454%
c.
0.13835 or 13.835%
d. 0.21118 or 21.118%
nited States)
Transcribed Image Text:1. Suppose that the mean of A is 360 and the standard deviation of A is 40. The mean of B is 45 and the standard deviation of B is 5? Which statement below is true? a) A has a more dispersed distribution than B b) B has a more dispersed distribution than A. c) A and B are equally dispersed. 2. The scatter diagram depicts 7 sample points for the pair, price and quantity. Given this scatter diagram, the correlation coefficient must be: a) close to zero Price (S/unit) b) close to 1 c) close to 2 d) close to -1 e) close to -2 f) close to 0.5 g) close to -0.5 h) equal to 1 ) equal to -1 j) equal to 2 k) equal to -2 80 60 40 20 20 40 80 60 Quantity (units) 3. The annual interest rates earned over the last 3 years were 15%, 27% and 1%. Given this information, what was the average annual interest rate over this period? a. 0.14333 or 14.333% b. 0.21454 or 21.454% c. 0.13835 or 13.835% d. 0.21118 or 21.118% nited States)
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