Question

A researcher wanted to determine if carpeted rooms contain more bacteria than uncarpeted rooms. The table shows the results for the number of bacteria per cubic foot for both types of rooms. Carpeted 10.6 14.5 7.5 10.1 15.4 11.4 15.6 6 Uncarpted 8.2 12.1 11.9 4.2 13 8.4 5.3 7.3 Determine the P-value for this hypothesis test. Choose the level of significance. In this case, the level of significance has been given as alpha equals 0.05. Used technology to preform this hypothesis test. Report the test statistic from the technology output, rounding to two decimal places. t = ?

Answer #1

A researcher wanted to determine if carpeted rooms contain more
bacteria than uncarpeted rooms. The table shows the results for the
number of bacteria per cubic foot for both types of rooms. Full
data set Carpeted Uncarpeted 6 6 11.4 11.4 9.2 9.2 11.3 11.3 5.5
5.5 10.2 10.2 14.9 14.9 8.9 8.9 15.6 15.6 12.3 12.3 7.1 7.1 6.2 6.2
6.4 6.4 9.3 9.3 4.5 4.5 6.6 6.6 Determine whether carpeted rooms
have more bacteria than uncarpeted rooms at...

A researcher wanted to determine if carpeted rooms contain more
bacteria than uncarpeted rooms. The table shows the results for the
number of bacteria per cubic foot for both types of rooms.
Determine the P-value for this hypothesis test. alpha equals 0.05
level of significance Carpeted: 13.4,14.9,7,10.7,10.5,11.4,6.4,11.1
Uncarpeted: 8.6,8.7,9.7,9.4,13.8,12,4.6,10.3

A researcher wanted to determine if carpeted rooms contain more
bacteria than uncarpeted rooms. The table shows the results for the
number of bacteria per cubic foot for both types of rooms.
Full data set
Carpeted
Uncarpeted
7.9
7.2
11.6
4.6
6
5.4
8.5
9.9
10.7
6.9
8.2
6.7
8.6
13.7
10.8
8.5
Determine whether carpeted rooms have more bacteria than
uncarpeted rooms at the α=0.05 level of significance. Normal
probability plots indicate that the data are approximately normal...

A researcher wanted to determine if carpeted rooms contain more
bacteria than uncarpeted rooms. The table shows the results for the
number of bacteria per cubic foot for both types of rooms.
Carpeted Uncarpeted
10.4 9.4
6.2 12.1
8.8 8.1
7.4 5.2
13.3 7.7
13.3 13.1
9 9.9
8.6 7.8
Determine the P-value for this hypothesis test.
P-value=___________?
(Round to three decimal places as needed.)

A researcher wanted to determine if carpeted rooms contain more
bacteria than uncarpeted rooms. The table shows the results for the
number of bacteria per cubic foot for both types of rooms.
Determine whether carpeted rooms have more bacteria than
uncarpeted rooms at the α=0.01 level of significance. Normal
probability plots indicate that the data are approximately normal
and boxplots indicate that there are no outliers.
State the null and alternative hypotheses. Let population 1 be
carpeted rooms and population...

A researcher wanted to determine if carpeted or uncarpeted rooms
contain more bacteria. The table shows the results for the number
of bacteria per cubic foot for both types of rooms. A normal
probability plot and boxplot indicate that the data are
approximately normally distributed with no outliers. Do carpeted
rooms have more bacteria than uncarpeted rooms at the
alphaequals0.05 level of significance?
Carpeted: 14.9, 11.2, 12.5, 11.8, 8.1, 8.8, 11, 10.8
Uncarpeted: 9,11,11.5, 11.3, 9.5, 4.6, 6.3, 13.8
Test...

A researcher wanted to determine if carpeted rooms contain more
bacteria than uncarpeted rooms. The table shows the results for the
number of bacteria per cubic foot for both types of rooms.
find the p-value and conclusion
Full data set
Carpeted
Uncarpeted
14.914.9
10.710.7
10.210.2
5.55.5
13.513.5
8.28.2
14.814.8
12.112.1
99
5.25.2
6.26.2
5.35.3
1616
15.315.3
5.65.6
10.710.7
and conclusion

The use of carpeting in hospitals has come under scrutiny and a
study “Are Carpeted Floors Sanitary?” was performed. Airborne
bacteria was collected through an experiment (don’t worry about the
details) for both carpeted and uncarpeted rooms and the following
data was collected: You cannot assume that the
following data come from normal populations but you may assume the
distribution of populations are approximately symmetric.
Carpeted Rooms
Bacteria/cubic foot
Uncarpeted Rooms
Bacteria/cubic foot
1
11.8
1
12.1
2
8.2
2...

Exercise 6. Bacterial level. A researcher studied the amount of
bacteria in a hospital to see if there is a difference between
carpeted and uncarpeted rooms. Air from each room tested was pumped
over a Petri dish at a rate of 1 cubic foot per hour. The bacteria
levels were measured. The results in bacteria per cubic foot are
listed in the table below. At α = 0.05, can you support the claim
that bacteria level in carpeted rooms is...

An important statistical measurement in service facilities (such
as restaurants and banks) is the variability in service times. As
an experiment, two bank tellers were observed, and the service
times for each of 100 customers were recorded. Do these data allow
us to infer at the 5% significance level that the variance in
service times differs between the two tellers? Estimate with 95%
confidence the ratio of variances of the two bank tellers. Teller 1
Teller 2 7.2 10.9 5.4...

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