Question

An airline claims that the no-show rate for passengers is less than 10%. In a sample of 420 randomly selected reservations, 19 were no-shows. A α = 0.05, test the airline's claim.

Answer #1

. A bus line claims that the no-show rate for passengers is at
most 8%. In a sample of 360 randomly selected reservations, 38 were
no-shows. At α = 0.05, test the bus line’s claim.

A manufacturer claims that less than 4% of his produced items
are defective. In a random sample of 300 items, 11 were defective.
At α=0.05, test the manufacturer claim.
Claim
H0
Ha
Test Statistic=
p-value=
Result:

A manufacturer claims that the mean lifetime of its lithium
batteries is less than 1200 hours. A homeowner randomly selects 35
of these batteries and finds the mean lifetime to be 1180 hours
with a standard deviation of 80 hours. Test the manufacturers
claim. Use α = 0.05.

A bank claims that the mean waiting time in line is less than
1.7 minutes. A random sample of 20 customers has a mean of 1.5
minutes with a standard deviation of 0.8 minute. If α = 0.05, test
the bank's claim using p-values.

The Municipal Transit Authority claims that, on weekdays, fewer
passengers ride the train that departs at 8 a.m. than the one that
departs at 2 p.m. The following sample statistics were determined.
The table shows the average number of riders for each train, after
samples from random days were taken for each train. n � s Morning
Train 3 8 313 30 Afternoon Train 32 336 18 Test at the α=.05 level
of significance whether the data provide sufficient evidence...

A fast food outlet claims that the mean waiting time in line is
less than 3.5 minutes. A random sample of 60 customers has a mean
of 3.4 minutes with a standard deviation of 0.6 minute. If α =
0.05, test the fast food outletʹs claim.

Because many passengers who make reservations do not show? up,
airlines often overbook flights? (sell more tickets than there are?
seats). A certain airplane holds 166 passengers. If the airline
believes the rate of passenger? no-shows is 6?% and sells 178
?tickets, is it likely they will not have enough seats and someone
will get? bumped? A)Use the normal model to approximate the
binomial to determine the probability of at least 167 passengers
showing up. B) Should the airline change...

Because many passengers who make reservations do not show up,
airlines often overbook flights (sell more tickets than there are
seats). A certain airplane holds 104 passengers. If the airline
believes the rate of passenger no-shows is 9% and sells 116
tickets, is it likely they will not have enough seats and someone
will get bumped?
1) Use the normal model to approximate the binomial to determine
the probability of at least 105 passengers showing up.
2) Should the airline...

In an advertisement, a pizza shop claims that its mean delivery
time is less than 15 minutes. A random selection of 16
delivery times has a sample mean of 14 minutes. It is known that
the population is a normal distribution with standard deviation of
delivery time is 2 minutes. Perform hypothesis test on the claim at
α = 0.05.

A local hardware store claims that the mean waiting time in line
is less than 3.7 minutes. A random sample of 20 customers has a
mean of 3.5 minutes with a standard deviation of 0.8 minute. If α =
0.05, test the bank's claim.
Null:
Alternative:
T=
p-Value=
Choose one: Reject or Fail to Reject
Conclusion in Context:

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