Question

The waiting time for customers at MacBurger Restaurants follows a normal distribution with a population standard deviation of 3 minute. At the Warren Road MacBurger, the quality assurance department sampled 49 customers and found that the mean waiting time was 16.25 minutes. At the 0.05 significance level, can we conclude that the mean waiting time is less than 17 minutes? Use α = 0.05.

**a.** State the null hypothesis and the alternate
hypothesis.

*H*_{0}: μ ≥

*H*_{1}: μ <

**b.** State whether the decision rule is true or
false: Reject *H*_{0} if *z* < -1.645.

(Click to select) True False

**c.** Compute the value of the test statistic.
**(Negative answer should be indicated by a minus sign. Round
the final answer to 2 decimal places.)**

Test statistic *z* is
.

**d.** What is your decision regarding
*H*_{0}?

(Click to select) Do not
reject Reject *H*_{0}.

**e.** What is the *p*-value? **(Round
the final answer to 4 decimal places.)**

The *p*-value is .

Answer #1

The waiting time for customers at MacBurger Restaurants follows
a normal distribution with a population standard deviation of 5
minute. At the Warren Road MacBurger, the quality assurance
department sampled 84 customers and found that the mean waiting
time was 13.75 minutes. At the 0.05 significance level, can we
conclude that the mean waiting time is less than 15 minutes? Use α
= 0.05.
a. State the null hypothesis and the alternate
hypothesis.
H0: μ ≥
H1: μ...

Exercise 10-6 (LO10-4) The waiting time for customers at
MacBurger Restaurants follows a normal distribution with a
population standard deviation of 1 minute. At the Warren Road
MacBurger, the quality-assurance department sampled 50 customers
and found that the mean waiting time was 2.75 minutes. At the 0.05
significance level, can we conclude that the mean waiting time is
less than 3 minutes? State the null hypothesis and the alternate
hypothesis. State whether the decision rule is true or false:
Reject...

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...

A sample of 46 observations is selected from a normal
population. The sample mean is 39, and the population standard
deviation is 9.
Conduct the following test of hypothesis using the 0.10
significance level.
H0 : μ ≤ 38
H1 : μ > 38
a. Is this a one- or two-tailed test?
(Click to select) (One-tailed test / Two-tailed test)
b. What is the decision rule? (Round
the final answer to 3 decimal places.)
(Click to select) (Reject /
Accept) H0...

A sample of 34 observations is selected from a normal
population. The sample mean is 28, and the population standard
deviation is 4. Conduct the following test of hypothesis using the
0.05 significance level.
H0: μ ≤ 26
H1: μ > 26
Is this a one- or two-tailed test?
One-tailed test
Two-tailed test
What is the decision rule?
Reject H0 when z > 1.645
Reject H0 when z ≤ 1.645
What is the value of the test statistic? (Round your...

A sample of 34 observations is selected from a normal
population. The sample mean is 28, and the population standard
deviation is 4. Conduct the following test of hypothesis using the
0.05 significance level. H0: μ ≤ 26 H1: μ > 26 Is this a one- or
two-tailed test? One-tailed test Two-tailed test What is the
decision rule? Reject H0 when z > 1.645 Reject H0 when z ≤ 1.645
What is the value of the test statistic? (Round your...

A sample of 83 observations is selected from a normal
population. The sample mean is 28, and the population standard
deviation is 5. Conduct the following test of hypothesis using the
0.01 significance level:
H0: μ ≤ 26
H1: μ > 26
a. Is this a one- or two-tailed test?
(Click to select) Two-tailed
test One-tailed test
b. What is the decision rule?
Reject H0 when z
(Click to
select) > 2.33 ≤ 2.33 .
c. What is the value of the test statistic?...

The amount of water consumed each day by a healthy adult follows
a normal distribution with a mean of 1.46 liters. A sample of 10
adults after the campaign shows the following consumption in
liters. A health campaign promotes the consumption of at least 2.0
liters per day:
1.78
1.90 1.38 1.60 1.80
1.30 1.56 1.90 1.90
1.68
At the 0.050 significance level, can we conclude that water
consumption has increased? Calculate and interpret the
p-value.
a.
State the null...

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 sample of 73 observations is selected from a normal
population. The sample mean is 43, and the population standard
deviation is 8. Conduct the following test of hypothesis using the
0.10 significance level:
H0: μ = 44
H1: μ ≠ 44
a. Is this a one- or two-tailed test?
(Click to select) One-tailed
test Two-tailed test
b. What is the decision rule?
Reject H0 and accept H1
when z does not lie in the region
from to .
c. What is the value...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 14 minutes ago

asked 26 minutes ago

asked 46 minutes ago

asked 59 minutes ago

asked 59 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 3 hours ago

asked 3 hours ago