Question

Among 18 devices in some store 7 have been used , 5 devices are randomly selected in the store .Compute the probability that at least 4 of them were used previously

Answer #1

In a large population, 69 % of the people have been vaccinated.
If 5 people are randomly selected, what is the probability that AT
LEAST ONE of them has been vaccinated?
Give your answer as a decimal (to at least 3 places) or
fraction.

A:Assume that when adults with smartphones are randomly
selected,56%use them in meetings or classes. If5adult smartphone
users are randomly selected, find the probability that at least3of
them use their smartphones in meetings or classes.
The probability is?
B: A survey showed that 72%of adults need correction
(eyeglasses, contacts, surgery, etc.) for their eyesight. If
9adults are randomly selected, find the probability that
at least 8of them need correction for their eyesight. Is 8 a
significantly high number of adults requiring...

Among a group of 25 tvs, 5 tvs are broken, and we randomly
select 8 tvs.
a) What is the probability that among the 8t vs selected at
least 2 are broken
b) Determine the standard deviation and the expected value of
the broken tvs among the 8 tvs selected

In a large population, 58 % of the people have been vaccinated.
If 4 people are randomly selected, what is the probability that AT
LEAST ONE of them has been vaccinated?

Some customers of a retail chain have a store credit card that
earns them bonus gifts when they make purchases at the chain.
Currently, 22 customers are shopping in a store in this chain. Of
these, half already have a store credit card. If employees offer
store credit cards to 5 of these, what is the probability that all
of those chosen already have a card?
(b) A family of 5 is shopping in the store. Noting that
Subscript n...

The probability that a randomly selected 4-year-old male stink
bug will live to be 5 years old is 0.97497.
a) What is the probability that two randomly selected 4-year-old
male stink bugs will live to be 5 years old?
b) What is the probability that eight randomly selected
4-year-old male stink bugs will live to be 5 years old?
c) What is the probability that at least one of eight randomly
selected 4-year-old male stink bugs will not live to...

In a large population, 67 % of the people have been vaccinated.
If 4 people are randomly selected, what is the probability that AT
LEAST ONE of them has been vaccinated?
Give your answer as a decimal (to at least 3 places) or
fraction

1)
Assume that when adults with smartphones are randomly selected, 53%
use them in meetings or classes. If 10 adult smartphone users are
randomly selected, find the probability that at least 5 of them use
their smartphones in meetings or classes.(Round to 4 decimal places
as needed)
2) Assume that when adults with smartphones are randomly
selected, 46% use them in meetings or classes. If 11 adult
smartphone users are randomly selected, find the probability that
fewer than 5 of...

1.
An electronics store has received a shipment of 20 table radios
that have connections for an iPod
or iPhone. Twelve of these have two slots (so they can
accommodate both devices), and the other
eight have a single slot. Suppose that six of the 20 radios are
randomly selected to be stored
under a shelf where the radios are displayed, and the remaining
ones are placed in a storeroom.
Let among the radios stored under the display shelf that...

69 randomly selected students were asked the number of pairs of
shoes they have. Let X represent the number of pairs of shoes. The
results are as follows:
# of Pairs of
Shoes
4
5
6
7
8
9
10
11
12
13
Frequency
6
6
6
10
5
6
8
7
5
10
Round all your answers to 4 decimal places where
possible.
The mean is:
The median is:
The sample standard deviation is:
The first quartile is:
The...

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