Question
In: Statistics and Probability
A survey research company asks 100 people how many times they have been to the dentist...
A survey research company asks 100 people how many times they have been to the dentist in the last five years. Their grouped responses appear below.
| Number of visits | Frequency |
| 0-4 | 16 |
| 5-9 | 25 |
| 10-14 | 48 |
| 15-19 | 11 |
(i). Identify type of variable and measurement scale.
(ii). Compute the mean and standard deviation.
(iii). Draw the histogram.
(iv). Based on (iii)., interpret the distribution of the data
Solutions
orchestra answered 2 years agoRelated Solutions
1. A question on a student survey asks: In a typical week, how many times do...
1. A question on a student survey
asks: In a typical week, how many times do you eat at a fast food
restaurant? The following data was then collected:
No. of times per week
No. of students
5 or
more
2
4
2
3
3
2
6
1
0
0
3
A. Find the mode (number of times per week) for this data.
B. Find the median (number of times per week) for this...
A group of young people were asked how many times they have been stopped and questioned...
A group of young people were asked how many times they have been
stopped and questioned by the police:
Non-White
White
Mean # of Stops
4.95 .99
Varriance 4.11 6.08
Sample size 155 310
We need t-test in order to determine if Non-White
and White young people are stopped by the police at the same
rate. You should be sure to specify, and
evaluate, both the Null and Alternative
Hypotheses.
Please show work
1.A pollster surveys 100 people and asks them how many hot dogs they eat monthly. The...
1.A pollster surveys 100 people and asks them how many hot dogs
they eat monthly. The result is a discrete random variable that has
the following probability distribution.
x
0
1
2
3
4
5
p(x)
0.15
0.58
0.15
0.04
0.02
(a)
Complete the missing value in the table.
x
0
1
2
3
4
5
p(x)
0.15
0.58
0.15
0.04
0.02
(b)
What is the median of this discrete random variable?
(c)
What is the mean of this discrete...
I did a survey on how times a week people take a shower, this is a...
I did a survey on how times a week people take a shower, this is
a random sample
The confidence level is 90%
I asked 10 girls from my family in group one.
6,5,4,5,3,6,8,7,5,9.
I asked 10 guys from my family in group two.
7,4,8,5,7,5,6,5,5,4
Group 1
Mean:
Sample Size: 10
Standard Deviation:
Group 2
Mean:
Sample Size: 10
Standard Deviation:
(___________ , _____________)
DF:
In a recent survey, 2033 people were surveyed as to how many people preferred Tinder and...
In a recent survey, 2033 people were surveyed as to how many
people preferred Tinder and how many people preferred Happn (a
local dating website) and how many preferred Tinder in New York and
Arizona. It was found that 1690/2033 people in New York liked using
Tinder while 343/2033 preferred Happn and in Arizona, 1853/2033
people liked using Tinder while 180/2033 liked using Happn.
Construct and interpret a 95% confidence interval for the
difference between the two dating website preferences....
A survey was conducted that asked 1008 people how many books they had read in the...
A survey was conducted that asked 1008 people how many books
they had read in the past year. Results indicated that x
overbarequals14.4 books and sequals16.6 books. Construct a 99%
confidence interval for the mean number of books people read.
Interpret the interval.
A survey was conducted that asked 1008 people how many books they had read in the...
A survey was conducted that asked 1008 people how many books
they had read in the past year. Results indicated that x
overbarequals14.4 books and sequals16.6 books. Construct a 99%
confidence interval for the mean number of books people read.
Interpret the interval.
A survey was conducted that asked 1023 people how many books they had read in the...
A survey was conducted that asked 1023 people how many books
they had read in the past year. Results indicated that x over bar x
equals=15.4 books and s equals=18.2
books. Construct a 95% confidence interval for the mean number
of books people read. Interpret the interval.
confidence interval for the mean number of books people read and
interpret the result. Select the correct choice below and fill in
the answer boxes to complete your choice.
(Use ascending order. Round...
A survey was conducted that asked 1019 people how many books they had read in the...
A survey was conducted that asked 1019 people how many books
they had read in the past year. Results indicated that x
overbarequals10.9 books and sequals16.6 books. Construct a 99%
confidence interval for the mean number of books people read.
Interpret the interval.
Construct a
99%
confidence interval for the mean number of books people read and
interpret the result. Select the correct choice below and fill in
the answer boxes to complete your choice.
(Use ascending order. Round to...
A survey was conducted that asked 1016 people how many books they had read in the...
A survey was conducted that asked 1016 people how many books
they had read in the past year. Results indicated that x overbar =
14.9 books and s = 16.6 books. Construct a 90% confidence interval
for the mean number of books people read. Interpret the
interval.
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