A) Mail Delivery A local postal carrier distributes first-class letters, advertisements, and magazines. For a certain day, she distributed the following numbers of each type of item. Delivered to First-class letters Ads Magazines Home 300 380 175 Business 710 1000 80 If an item of mail is selected at random, find the probability for the following. Round your answers to at least three decimal places. P (the item went to a home) = B) The frequency distribution shown here illustrates the number of medical tests conducted on 44 randomly selected emergency patients. Number of tests performed Number of patients 0 14 1 11 2 4 3 6 4 or more 9 If a patient is selected at random, find the probability for the following. Enter your answers as fractions or as decimals rounded to 3 decimal places P (patient has had exactly 2 tests done)= C) If one card is drawn from an ordinary deck of cards, find the probability of getting the following. Enter your answers as fractions or as decimals rounded to 3 decimal places. P (heart or spade or diamond) =
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
A) Mail Delivery A local postal carrier distributes first-class letters, advertisements, and magazines. For a certain day, she distributed the following numbers of each type of item.
Delivered to |
First-class letters | Ads |
Magazines |
|---|---|---|---|
| Home |
300
|
380
|
175
|
| Business |
710
|
1000
|
80
|
If an item of mail is selected at random, find the
|
P (the item went to a home) =
|
| Number of tests performed | Number of patients |
|---|---|
|
0
|
14
|
|
1
|
11
|
|
2
|
4
|
|
3
|
6
|
|
4 or more
|
9
|
If a patient is selected at random, find the probability for the following. Enter your answers as fractions or as decimals rounded to 3 decimal places
|
P (patient has had exactly 2 tests done)=
|
Enter your answers as fractions or as decimals rounded to 3 decimal places.
|
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