Question

1500 people at all. 5% chance but a boll. what is the propability
more than 90 people buy bolls? use the normal approximation with
continuity correction

Answer #1

On average, only 95% of people bought an airline ticket will
show up in the airport. In an airline’s flight, 400 people bought
tickets. What is the probability that the number of people coming
to the airport is at least 380 but no more than 390. (Use normal
approximation with continuity correction)

1) In economics, of all new products put on the market, only 5%
become popular and last more than five years on the market. using
normal approximation for this binomial distribution, if a store
introduces 200 new product. what is the probability that at most 12
products last more than five years on the market? Round to four
decimal places.
2) In economics, of all new products put on the market, 90% fail
and are taken off the market within...

Find the probability of more than 30 heads in 50 flips of a fair
coin by using the normal approximation to the binomial
distribution.
a) Check the possibility to meet the requirements to use normal
approximation (show your calculation)
b) Find the normal parameters of the mean(Mu) and standard
deviation from the binomial distribution.
c) Apply normal approximation by using P(X>30.5) with
continuity correction and find the probability from the table of
standard normal distribution.

If the chance of getting a broken cookie is .05, what is the
probability of getting two or more broken cookies in a bag of 40
cookies? Use correction for continuity.

In a population of 1,000,000 people, 1000 have particular
disease. You are at a gathering of 200 random
people. Use a normal approximation to find the probability that at
least one person at the gathering
has the disease (use continuity correction)

Among students at a particular university, 90% have visited the
main dining hall at least once. What is the probability that of 100
randomly selected students, between 90-93 of them will have visited
the main dining hall at least once?
Answer this question using the binomial distribution.
Approximate this answer using the normal distribution without
the continuity correction.
Approximate this answer using the normal distribution and the
continuity correction. (Take note of how close your approximation
is.)

In economics, of all new products put on the market, 60% failed
and are taken off the market within 2 years. Suppose a store
introduces 80 new products. Use the normal approximation for the
binomial distribution what is the probability that within 2 years
56 or less will fail with correction for continuity?

A)
In the past year, Valentino’s Pizza Restaurant grosses more than
$1500 a day for about 70% of its business days. During the next 8
business days, what is the probability that Valentino’s will gross
more than $1500 a day for 7 or more days?
B) During the next 8 business days, what is the probability
that Valentino’s will gross more than $1500 a day for 5 or more
days?
C) During the next 8 business days, what is the...

In the past year, Valentino's Pizza Restaurant grossed more than
$1500 a day for about 70% of its business days.
1. During the next 8 business days, what is the probability that
Valentino's will gross more than $1500 a day for 7 or more
days?
2. During the next 8 business days, what is the probability that
Valentino's will gross more than $1500 a day for 5 or more
days?
3. During the next 8 business days, what is the...

A survey reports that 65% of college students use Google as
their search engine. If 100 students of a college were randomly
selected and were asked whether he or she uses Google as their
search engine. Using normal approximation to probability, what is
the probability (with correction for continuity) that more than 65
will say yes?

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