(a)
To find: the number of bad seeds that is expected to get.
(a)
Answer to Problem 30E
10
Explanation of Solution
Given:
mean number of good seeds is 18.
Number of bad seeds = 20-X
Calculation:
Suppose X be number of seeds that an good in packet of 20 seeds.
Mean number of bad seeds,
Let Y be number of bad seeds in 5 such packets.
(b)
To find: the standard deviation.
(b)
Answer to Problem 30E
6
Explanation of Solution
Given:
mean number of good seeds is 18.
Number of bad seeds = 20-X
Formula used:
Calculation:
Let X be number of seeds that an good in packet of 20 seeds.
It s given that mean number of good seeds is 18.
Number of bad seeds = 20-X
Mean number of bad seeds,
Let Y be number of bad seeds in 5 such packets.
Finding variance
Therefore, the standard deviation is 6
(c)
To Explain: the assumptions that make about the seeds and assumption is warranted yes or not.
(c)
Explanation of Solution
Given:
mean number of good seeds is 18.
Number of bad seeds = 20-X
It is assumed that number of bad seeds in a packet is not dependent of number of bad seeds in another packet.
Chapter 16 Solutions
Stats: Modeling the World Nasta Edition Grades 9-12
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