Plzzz explain all question
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
![Let X be the number of packages being mailed by a randomly selected customer at a certain shipping facility. Suppose the distribution of X is as follows.
1
2
3
p(x) 0.4 0.1 0.2 0.3
(a) Consider a random sample of size n = 2 (two customers), and let X be the sample mean number of packages shipped. Obtain the probability distribution of X.
1
1.5
2
2.5
3
3.5
4
P(x)0.16
0.08
0.17
0.1
0.12
0.28
0.09
(b) Refer to part (a) and calculate P(X s 2.5).
0.69
(c) Again consider a random sample of size n = 2, but now focus on the statistic R = the sample range (difference between the largest and smallest values in the sample). Obtain the distribution of R. [Hint: Calculate the value of R for each outcome
and use the probabilities from part (a).]
R
1
2
3
P(R) ||0.3
|x
(d) If a random sample of sizen = 4 Is selected, what is P(X < 1.5)? [Hint: You should not have to list all possible outcomes, only those for which x< 1.5.]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3b81fca2-c425-4c87-8e39-41ce65e9c23d%2F4e92eb27-0acc-49f9-8205-f09f81a2da60%2Fh19nyqq_processed.jpeg&w=3840&q=75)
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