Question

In a survey, 500 randomly selected people were asked whether they have a tattoo and/or body piercing. The results are as follows: 79 only have a tattoo, 31 have only a body piercing, and 151 have a tattoo or a body piercing(or both) a. Count and sort the results using a two set Venn diagram b.How many people have both a tattoo and a body piercing? C. How many people have neither a tattoo nor a body piercing?

Answer #1

Volunteers were asked to fill out a survey about body piercings
and tattoos. The probability that a person has a tattoo is 0.3. For
this problem, we can assume that the volunteers are
independent.
a) What is the probability that three people will have a tattoo
out of 10 volunteers surveyed?
b) How many volunteers out of 10 can we expect to have a
tattoo?
c) What is the probability that it will take asking at least 3
volunteers to...

A survey asked, "How many tattoos do you currently have on
your body?" Of the 1209 males surveyed, 185 responded that they
had at least one tattoo. Of the 1009 females surveyed, 129
responded that they had at least one tattoo. Construct a 95%
confidence interval to judge whether the proportion of males that
have at least one tattoo differs significantly from the proportion
of females that have at least one tattoo. Interpret the
interval.

A survey asked, "How many tattoos do you currently have on
your body?" Of the 1213 males surveyed, 191 responded that they
had at least one tattoo. Of the 1046 females surveyed, 133
responded that they had at least one tattoo. Construct a 90%
confidence interval to judge whether the proportion of males that
have at least one tattoo differs significantly from the proportion
of females that have at least one tattoo. Interpret the
interval.
Let p1 represent the proportion...

A survey asked, "How many tattoos do you currently have on
your body?" Of the 1210 males surveyed, 185 responded that they
had at least one tattoo. Of the 1075 females surveyed, 135
responded that they had at least one tattoo. Construct a 99%
confidence interval to judge whether the proportion of males that
have at least one tattoo differs significantly from the proportion
of females that have at least one tattoo. Interpret the
interval.Let p1 represent the proportion of...

A survey asked, "How many tattoos do you currently have on
your body?" Of the 1206 males surveyed, 198 responded that they
had at least one tattoo. Of the 1046 females surveyed, 127
responded that they had at least one tattoo. Construct a 95%
confidence interval to judge whether the proportion of males that
have at least one tattoo differs significantly from the proportion
of females that have at least one tattoo. Interpret the
interval.
Let p 1p1 represent the...

A survey asked, "How many tattoos do you currently have on
your body?" Of the 1216 males surveyed, 179 responded that they
had at least one tattoo. Of the 1030 females surveyed, 139
responded that they had at least one tattoo. Construct a 99%
confidence interval to judge whether the proportion of males that
have at least one tattoo differs significantly from the proportion
of females that have at least one tattoo. Interpret the
interval.
Let p1 represent the proportion...

A survey asked, "How many tattoos do you currently have on
your body?" Of the 1229 males surveyed, 182 responded that they
had at least one tattoo. Of the 1020 females surveyed, 137
responded that they had at least one tattoo. Construct a 90%
confidence interval to judge whether the proportion of males that
have at least one tattoo differs significantly from the proportion
of females that have at least one tattoo. Interpret the interval.
Let p1 represent the proportion...

A survey asked, "How many tattoos do you currently have on
your body?" Of the
12271227
males surveyed,
190190
responded that they had at least one tattoo. Of the
10601060
females surveyed,
129129
responded that they had at least one tattoo. Construct a
9999%
confidence interval to judge whether the proportion of males
that have at least one tattoo differs significantly from the
proportion of females that have at least one tattoo. Interpret the
interval.
Let
p 1p1
represent the...

A survey asked, "How many tattoos do you currently have on
your body?" Of the 1210 males surveyed,184 responded that they
had at least one tattoo. Of the 1039
females surveyed,138 responded that they had at least one
tattoo. Construct a 90%
confidence interval to judge whether the proportion of males
that have at least one tattoo differs significantly from the
proportion of females that have at least one tattoo. Interpret the
interval.
Let p1 represent the proportion of males...

A recent survey of 2,250 randomly selected U.S. residents asked
whether or not they had used the Internet for making travel
reservations. There were 1,500 people who answered “yes,” and the
remainder answered “no.” Let X be the number of people who answered
“yes.”
Estimate the proportion p from this information. Then calculate
the probability that X is less than or equal to 1,525.

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