A) The strata to be used in this survey by the employer is; <em><u>Type of Staff</u></em>
B) <em>Stratified Random Sampling</em> will be preferred because the opinions of <em><u>the staffs on the tipping policy</u></em> may be the same within each type but differ across the different <u><em>types of staffs.</em></u>
- A stratified random sampling is a type of sampling that divides a population into groups known as strata.
Now, from the question, we see that after adding a 20% to the cost of food and beverages, that the additional revenue will be distributed equally among the kitchen and server staffs.
This means the strata here will be the type of staff because the opinions of the staffs on the tipping policy may be the within each type but differ across both types of staffs.
Read more at; brainly.com/question/1954758
I got 2 aces. one heart one spade. a jack of clubs a joker and a partrige in a pear tree.<span />
I think it is b .because negative numbers are less than anything
Answer: ok? whats the question
Step-by-step explanation:
The probability of a diamond is 13/52 = 1/4 So none of the diamonds can be used for the other 2 restrictions.
The even numbered cards are 2 4 8 10.
The 6 cannot be used, because it could come into the next category. Six is divisible by 3.
These can come from clubs hearts and spades.
So each even number has 3 suits it can come from
The number of cards in this category is 3 * 4 = 12
The probability of this occurring is 12/39 = 4/13
The cards divisible by 3 are
3 and 9 [Again you can't use the 6]
The Total number of cards are 2*3 = 6
The probability is 6/39 = 2/13
The total probability (without drawing a 6) is
1/4 + 2/13 + 4/13 = 37/52
The two categories where a 6 can turn up are equally likely so choosing the category is 1/2. the probability of a 6 turning up in the first category is 1/2* 3/39 = 3/78 = 1/26
The probability of the 6 turning up in the second category is 1/2 * 3/39 = 3/78 = 1/26 So these two numbers must added into the mix.
37/52 + 2(1/26) = 37/52 + 1/13 = 41/52
