Question

A study examined whether the content of TV shows influenced the ability of viewers to recall brand names in commercials. The researchers randomly assigned volunteers to watch one of three programs, each containing the same nine commercials. The shows were either violent, sexual, or neutral. Afterwards, the subjects were asked to recall the brands of the advertised products. Results are summarized to the right. Complete parts a and b below.

violent sexual neutral

# of subjects 100 100 100

brands recalled

mean 2.14 1.59 3.07

SD 1.62 1.55 1.98

a.) A test of the hypothesis that there is no difference in ad memory between programs with sexual content and those with violent content with a significance level of

alphaαequals=0.050.05

has a P-value of

0.0150.015.

State your conclusion.

Select the correct answer below.

A.Since the P-value is

less thanless than

0.050.05,

the null hypothesis that there is no difference between the two programs

cannot becannot be

rejected.

B.Since the P-value is

greater thangreater than

0.050.05,

the null hypothesis that there is no difference between the two programs

cannot becannot be

rejected.

C.Since the P-value is

less thanless than

0.050.05,

the null hypothesis that there is no difference between the two programs

isis

rejected.

D.Since the P-value is

greater thangreater than

0.050.05,

the null hypothesis that there is no difference between the two programs

isis

rejected.b.) Is there evidence that viewer memory for ads may differ between programs with sexual content and those with neutral content? Test an appropriate hypothesis and state your conclusion. (Assume a significance level of

alphaαequals=0.050.05)

Identify the null and alternative hypotheses. Choose the correct answer below.

A.

Upper H 0 : mu Subscript Upper S Baseline minus mu Subscript Upper N Baseline equals 0H0: μS−μN=0

Upper H Subscript Upper A Baseline : mu Subscript Upper S Baseline minus mu Subscript Upper N Baseline not equals 0HA: μS−μN≠0

B.

Upper H 0 : mu Subscript Upper S Baseline minus mu Subscript Upper N Baseline equals 0H0: μS−μN=0

Upper H Subscript Upper A Baseline : mu Subscript Upper S Baseline minus mu Subscript Upper N Baseline greater than 0HA: μS−μN>0

C.

Upper H 0 : mu Subscript Upper S Baseline minus mu Subscript Upper N Baseline equals 0H0: μS−μN=0

Upper H Subscript Upper A Baseline : mu Subscript Upper S Baseline minus mu Subscript Upper N Baseline less than 0HA: μS−μN<0

D.

Upper H 0 : mu Subscript Upper S Baseline minus mu Subscript Upper N Baseline not equals 0H0: μS−μN≠0

Upper H Subscript Upper A Baseline : mu Subscript Upper S Baseline minus mu Subscript Upper N Baseline equals 0HA: μS−μN=0

Compute the t-statistic.

t=?

(Round to two decimal places as needed.)

Find the P-value.

The P-value is

nothing.

(Round to three decimal places as needed.)

State the conclusion. Choose the correct answer below.

A.

Do not reject

the null hypothesis. There is

insufficientin

evidence to support the claim that viewers' memories are different.

B.

Reject

the null hypothesis. There is

insufficient

evidence to support the claim that viewers' memories are different.

C.

Do not reject

the null hypothesis. There is

sufficient/sufficient

evidence to support the claim that viewers' memories are different.

D.

Reject

the null hypothesis. There is

sufficientsufficient

evidence to support the claim that viewers' memories are different.

Answer #1

A study examined whether the content of TV shows influenced the
ability of viewers to recall brand names in commercials. The
researchers randomly assigned volunteers to watch one of three?
programs, each containing the same eleven commercials. The shows
were either? violent, sexual, or neutral.? Afterwards, the subjects
were asked to recall the brands of the advertised products. Results
are summarized to the right. Complete parts? a) and? b) below.
Violent Sexual Neutral
104 98 99
means 2.54 3.13 4.29...

A study examined whether the content of TV shows influenced the
ability of viewers to recall brand names in commercials. The
researchers randomly assigned volunteers to watch one of three
programs, each containing the same ten commercials. The shows were
either violent, sexual, or neutral. Afterwards, the subjects were
asked to recall the brands of the advertised products. Results are
in the accompanying table. Use the table to complete the info
below.
Violent Sexual Neutral
No. of subjects 98 104 ...

A study examined whether the content of TV shows influenced the
ability of viewers to recall brand names in commercials. The
researchers randomly assigned volunteers to watch one of three
programs, each containing the same eight commercials. The shows
were either violent, sexual, or neutral. Afterwards, the subjects
were asked to recall the brands of the advertised products. Results
are in the accompanying table. Use the table to complete parts a)
and b) below. Determine the t-statistic?
Violent Sexual ...

Listed below are systolic blood pressure measurements (mm Hg)
taken from the right and left arms of the same woman. Assume that
the paired sample data is a simple random sample and that the
differences have a distribution that is approximately normal. Use
a
0.050.05
significance level to test for a difference between the
measurements from the two arms. What can be concluded?
Right arm
152152
148148
115115
129129
136136
Left arm
172172
168168
177177
148148
149149
In this example,...

Provided below are summary statistics for independent simple
random samples from two populations. Use the pooled t-test and the
pooled t-interval procedure to conduct the required hypothesis
test and obtain the specified confidence interval.
x overbar 1x1equals=1414,
s 1s1equals=2.42.4,
n 1n1equals=1818,
x overbar 2x2equals=1515,
s 2s2equals=2.42.4,
n 2n2equals=1818
a. Two-tailed test,
alphaαequals=0.050.05
b.
9595%
confidence interval
a. First, what are the correct hypotheses for
a two-tailed test?
A.
Upper H 0H0:
mu 1μ1equals=mu 2μ2
Upper H Subscript aHa:
mu 1μ1not...

The table below shows the number of hours per day 11 patients
suffered from headaches before and after 7 weeks of soft tissue
therapy. At alphaαequals=0.01,
is there enough evidence to conclude that soft tissue therapy
helps to reduce the length of time patients suffer from headaches?
Assume the samples are random and dependent, and the population is
normally distributed. Complete parts (a) through (f).
Patient Daily headache hours (before)
Daily headache hours (after)
1 3.1 2.4
2 1.8 2.2...

In a test of the hypothesis Upper H 0 : mu equals 10 versus
Upper H Subscript a Baseline : mu not equals 10 a sample of n=50
observations possessed mean x over=10.6 and standard deviation
s=2.7. Find and interpret the p-value for this test.

An advertising firm commissioned a study to determine whether
the content of TV shows affected the ability of viewers to remember
brand names from commercials. Ninety-eight (98) randomly selected
people watched a show with violent content. Of the nine commercials
shown, they were able to remember an average of 2.84 brand names
with a sample standard deviation of 1.51. Ninety-six (96) randomly
selected people watched a show with neutral (non-violent) content.
Of the same nine commercials shown, they were able...

An advertising firm commissioned a study to determine whether
the content of TV shows affected the ability of viewers to remember
brand names from commercials. Ninety-eight (98) randomly selected
people watched a show with violent content. Of the nine commercials
shown, they were able to remember an average of 2.84 brand names
with a sample standard deviation of 1.51. Ninety-six (96) randomly
selected people watched a show with neutral (non-violent) content.
Of the same nine commercials shown, they were able...

To test the belief that sons are taller than their fathers, a
student randomly selects 13 fathers who have adult male children.
She records the height of both the father and son in inches and
obtains the following data. Are sons taller than their fathers?
Use the alphaequals0.05 level of significance. Note: A normal
probability plot and boxplot of the data indicate that the
differences are approximately normally distributed with no
outliers. LOADING... Click the icon to view the table...

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