That seems so hard, sending prayers and brain cells to you.
Answer:
$7.28
Step-by-step explanation:
The average price, or the expected price, of any item in this specialty store is given by the weighted average of each item's price. That is, the sum of the products of each individual price by its corresponding sales mix:
The average price of any item in the store is $7.28
Answer:
B
Step-by-step explanation:
Step-by-step explanation:
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Answer:
(a) 0.6
(b) 0.3
(c) 0.9
Step-by-step explanation:
We are given that a pharmacist wishes to select three brands of aspirin to sell in his store. He has five major brands to choose from: A, B, C, D and E.
Total number of ways to select 3 brands from total of 5 = = = = 10 .
In all the three parts denominators remains at 10
(a) If he selects the three brands at random, the probability that he will select brand B = one brand B will be selected and other 2 brands will be selected from the remaining 4 brands i.e.
So, required probability = = = 0.6
(b) The probability that he will select the brands B and C = Two brands will be selected of B and C and one brand will be selected from remaining 3 brands i.e.;
So, required probability = = = 0.3 .
(c) The probability that he will select at least one of the two brands B and C
= 1 - Probability that neither of the three brands are from B and C
= 1 - Probability that all three brands are selected from the remaining
brands of A, D and E
= 1 - = = = 0.9 .