Question

According to a flight statistics website, in 2009, a certain airline had the highest percentage of on-time flights in the airlines industry, which was 81.2%. Assume this percentage still holds true for that airline. Use the normal approximation to the binomial distribution to complete parts a through c below.

Determine the probability that, of the next 30 flights from this airline, less than 24 flights will arrive on time.

Answer #1

The following information about the Binomial distribution is provided:

The population proportion of success is , and the sample size is . We need to compute

The population mean is computed as:

and the population standard deviation is computed as:

Therefore, we get that

so then, we conclude that , which ends the calculation of the requested probability

**Please do upvote
if you are satisfied! Let me know in the comments if anything is
not clear. I will reply ASAP!**

According to a flight statistics website, in 2009, a certain
airline had the highest percentage of on-time flights in the
airlines industry, which was 81.2%. Assume this percentage still
holds true for that airline. Use the normal approximation to the
binomial distribution to complete parts a through c below. b.
Determine the probability that, of the next 30 flights from this
airline, exactly 27 flights will arrive on time.

32.71% of Delta Airlines were never on time in 2016. Assume this
percentage still holds true for airline. For the next 31 flights
from Delta Airlines, use the normal approximation to the binominal
distribution to answer the following questions.
a) Find the probability that exactly 9 flights will arrive on
time.
b) Find the probability that fewer than 15 flights will arrive on
time.
c) Find the probability that 21, 22, or 23 flights will arrive on
time.

According to the U.S. Bureau of Transportation Statistics, 20%
of airline flights in the United States failed to arrive on time in
2017. Airlines concentrated heavily to reduce this number for 2018.
Suppose that in a recent random sample of 350 flights, 63 failed to
arrive on time. Test at the 10% significance level whether the
current percentage of all U.S. flights that fail to arrive on time
decreased from 20%.C) Compute the Test Statistic D) Find the
p-value (using...

According to an? airline, flights on a certain route are on time
75?%of the time. Suppose 24 flights are randomly selected and the
number of? on-time flights is recorded.
?(a) Explain why this is a binomial
experiment.
?(b) Find and interpret the probability that
exactly 14 flights are on time.
?(c) Find and interpret the probability that
fewer than 14 flights are on time.
?(d) Find and interpret the probability that at
least 14 flights are on time.
?(e) Find...

On any given flight, the goal of an airline is to fill the plane
as much as possible, without exceeding the capacity of the plane.
In order to achieve this, the airlines routinely overbook their
flights in consideration of last minute cancellations. We assume
that a customer cancels his/her ticket in the last minute with
probability 0.06, independent of the other customers. We also
assume that the airline is not able to sell more tickets in order
to replace the...

According to a social media? blog, time spent on a certain
social networking website has a mean of 23 minutes per visit.
Assume that time spent on the social networking site per visit is
normally distributed and that the standard deviation is 4 minutes.
Complete parts? (a) through? (d) below. a. If you select a random
sample of 36 ?sessions, what is the probability that the sample
mean is between 22.5 and 23.5 ?minutes? nothing ?(Round to three
decimal places...

According to a social media blog, time spent on a certain
social networking website has a mean of 17 minutes per visit.
Assume that time spent on the social networking site per visit is
normally distributed and that the standard deviation is 5 minutes.
Complete parts (a) through (d) below.
a. If you select a random sample of 16
sessions, what is the probability that the sample mean is
between
16.5 and 17.5 minutes?
(Round to three decimal places as...

According to a social media blog, time spent on a certain
social networking website has a mean of 20 minutes per visit.
Assume that time spent on the social networking site per visit is
normally distributed and that the standard deviation is 6 minutes.
Complete parts (a) through (d) below.
a. If you select a random sample of 16 sessions, what is the
probability that the sample mean is between 19.5 and 20.5 minutes?
(Round to three decimal places as...

Cancer survival rates indicate the percentage of people who
survive a certain type of cancer for a specific amount of time.
Cancer statistics often use an overall 5-year survival rate. For
instance, the overall 5-year survival rate for bladder cancer is
75%. That means that of all people diagnosed with bladder cancer,
75 out of every 100 were able to survive beyond 5 years.
Suppose that there was a new treatment for bladder cancer and a
study was conducted to...

2) Airline accidents: According to the U.S. National
Transportation Safety Board, the number of airline accidents by
year from 1983 to 2006 were 23, 16, 21, 24, 34, 30, 28, 24, 26, 18,
23, 23, 36, 37, 49, 50, 51, 56, 46, 41, 54, 30, 40, and 31.
a. For the sample data, compute the mean and its standard error
(from the standard deviation), and the median.
b. Using R, compute bootstrap estimates of the mean, median and
25% trimmed...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 2 minutes ago

asked 4 minutes ago

asked 4 minutes ago

asked 7 minutes ago

asked 7 minutes ago

asked 10 minutes ago

asked 10 minutes ago

asked 11 minutes ago

asked 11 minutes ago

asked 16 minutes ago

asked 20 minutes ago

asked 25 minutes ago