Question

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:

Answer #1

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.

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.

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 3.6 minutes with a population standard deviation of 0.6 minute.
Using a significance level of 0.05, test the fast food outlet's
claim

A local retailer claims that the mean waiting time is less than
7 minutes. A random sample of 20 waiting times has a mean of 5.5
minutes with a standard deviation of 2.1 minutes. At α = 0.01, test
the retailer's claim. Assume the distribution is normally
distributed. Round the test statistic to the nearest
thousandth.
a) State the Null and Alternate Hypotheses.
b) Is this a left, right or two-tailed test?
c) Find the sample test statistic.
d) Use...

A local supermarket claims that the waiting time for its
customers to be served is the lowest in the area. Acompetitor's
supermarket checks the waiting times at both supermarkets. The
sample statistics are listed below.Test the local supermarket's
hypothesis. Use΅= 0.05. Local SupermarketCompetitor Supermarket
n1= 15 n2= 16
x1= 5.3 minutes xbar2=5.6 minuets
s1= 1.1 minutes s2= 1.0 minutes
A) Hypothises:
B) Critical Values tcrutical
C) Test statistic tstat and the decision to reject or fail to
reject
D) The...

A public bus company official claims that the mean waiting time
for bus number 14 during peak hours is less than 10 minutes. Karen
took bus number 14 during peak hours on 18 different occasions. Her
mean waiting time was 7.9 minutes with sample standard deviation s
= 1.5 minutes. At the 0.01 significance level, test the claim that
the mean waiting time is less than 10 minutes.
a) Write the null and alternative hypotheses.
b) Determine the P-value.
c)...

Comcast claims that mean waiting time of customers is 3 minutes
with a standard deviation of 1 minute for customer service. A
survey completed by an outside firm found in a sample of 50 Comcast
customers that the mean waiting time was 2.75 minutes. At the .05
significance level, can we conclude that the mean waiting time is
less than 3 minutes?

(CO7) A state Department of Transportation claims that the mean
wait time for various services at its different location is less
than 6 minutes. A random sample of 16 services at different
locations has a mean wait time of 9.5 minutes and a standard
deviation of 7.3 minutes. At α=0.05, can the department’s claim be
supported assuming the population is normally distributed?
No, since p of 0.037 is less than 0.05, reject the null. Claim
is null, so is not...

A large national survey shows that the waiting times for fast
food restaurants is approximately normally distributed with a mean
of μ = 4.2 minutes and a standard deviation of σ = 0.9 minutes. A
fast food company claims that their mean waiting time in line is
less than 4.2 minutes. To test the claim, a random sample of 95
customers is selected, and is found to have a mean of 3.7 minutes.
We will use this sample data to...

(CO 5) A state Department of Transportation claims that the mean
wait time for various services at its different location is more
than 6 minutes. A random sample of 16 services at different
locations has a mean wait time of 9.5 minutes and a standard
deviation of 7.3 minutes. At α=0.01, can the department’s claim be
supported assuming the population is normally distributed? Group of
answer choices
No, since p of 0.037 is greater than 0.01, fail to reject the...

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