A marketing firm tracks data on grocery store visits. In one study, it finds that the probability that a shopper buys bread duri
ng a visit to the grocery store is 0.70, and the probability that a shopper buys cheese is 0.20.Event A = A shopper buys bread.Event B = A shopper buys cheese.A and B are independent events if _____.
2 answers:
You might be interested in
Question:
If a sample of 2 hammer is selected
(a) find the probability that all in the sample are defective.
(b) find the probability that none in the sample are defective.
Answer:
a
b
Step-by-step explanation:
Given
--- hammers
--- selection
This will be treated as selection without replacement. So, 1 will be subtracted from subsequent probabilities
Solving (a): Probability that both selection are defective.
For two selections, the probability that all are defective is:
Solving (b): Probability that none are defective.
The probability that a selection is not defective is:
For two selections, the probability that all are not defective is:
Answer:14 m
Step-by-step explanation:
Dada
larga
superficie
Suponga que el ancho es w
La superficie está dada por el producto de la longitud y la anchura.
Por lo tanto, el ancho es de 14 m.