Question

A psychiatrist is interested in finding a 90% confidence interval for the tics per hour exhibited by children with Tourette syndrome. The data below show the tics in an observed hour for 10 randomly selected children with Tourette syndrome. Round answers to 3 decimal places where possible. 7 5 4 12 5 3 4 12 6 1 a. To compute the confidence interval use a distribution. b. With 90% confidence the population mean number of tics per hour that children with Tourette syndrome exhibit is between and . c. If many groups of 10 randomly selected children with Tourette syndrome are observed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean number of tics per hour and about percent will not contain the true population mean number of tics per hour.

Answer #1

for unknown sigma value we use t distribution

the 95% confidence interval for u is

A psychiatrist is interested in finding a 90% confidence
interval for the tics per hour exhibited by children with Tourette
syndrome. The data below show the tics in an observed hour for 11
randomly selected children with Tourette syndrome. Round answers to
3 decimal places where possible. 12 2 8 6 7 9 1 8 9 8 11
a. To compute the confidence interval use a distribution.
b. With 90% confidence the population mean number of tics per
hour that...

A psychiatrist is interested in finding a 95% confidence
interval for the tics per hour exhibited by children with Tourette
syndrome. The data below show the tics in an observed hour for 11
randomly selected children with Tourette syndrome. Round answers to
3 decimal places where possible.
8
6
0
2
9
2
12
1
0
10
1
a. To compute the confidence interval use a
distribution.
b. With 95% confidence the population mean number of tics per
hour that...

A psychiatrist is interested in finding a 95% confidence
interval for the tics per hour exhibited by children with Tourette
syndrome. The data below show the tics in an observed hour for 14
randomly selected children with Tourette syndrome. Round answers to
3 decimal places where possible.
2 9 12 2 3 8 7 12 10 3 1 3 2 0
a. To compute the confidence interval use _______
distribution.
b. With 95% confidence the population mean number of tics...

A psychiatrist is interested in finding a 95% confidence
interval for the tics per hour exhibited by children with Tourette
syndrome. The data below show the tics in an observed hour for 13
randomly selected children with Tourette syndrome. Round answers to
3 decimal places where possible. 3 12 1 8 5 6 8 3 11 4 9 2 2
a. To compute the confidence interval use a distribution.
b. With 95% confidence the population mean number of tics per...

A psychiatrist is interested in finding a 98% confidence
interval for the tics per hour exhibited by children with Tourette
syndrome. The data below show the tics in an observed hour for 14
randomly selected children with Tourette syndrome. Round answers to
3 decimal places where possible.
0
0
2
0
0
8
11
4
6
11
10
10
0
10
a. To compute the confidence interval use a ? z
t distribution.
b. With 98% confidence the population mean number...

A psychiatrist is interested in finding a 90% confidence
interval for the tics per hour exhibited
by
children with Tourette syndrome. The data below show the tics in an
observed hour for 13
randomly
selected children with Tourette syndrome.
6
10 12 6 0 8 6 8 9 6 9 1 10
Find the 90%
confidence interval, the margin of error, and interpret your
results.

A researcher is interested in finding a 90% confidence interval
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The study included 142 students who averaged 36.7 texts per day.
The standard deviation was 21.9 texts. Round answers to 3 decimal
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texts per day is between and texts. c. If many groups of 142
randomly selected...

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a. To compute the confidence interval use a ? t
z distribution.
b. With 90% confidence the population mean minutes of
concentration is...

You are interested in finding a 90% confidence interval for the
average number of days of class that college students miss each
year. The data below show the number of missed days for 10 randomly
selected college students.
11 0 10 11 3 11 8 9 4 3
a. To compute the confidence interval use a distribution.
b. With 90% confidence the population mean number of days of
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____...

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