Question
In: Statistics and Probability
A random sample of six cars from a particular model year had the fuel consumption figures, measure in miles per gallon, shown below.
A random sample of six cars from a particular model year had the fuel consumption figures, measure in miles per gallon, shown below.
- Using T.INV, find a 90% confidence interval for the population mean of fuel consumption for cars of this model year. Assume the distribution is normal. (Round to 2 digits, since our raw data below are expressed with one digit.) (Show work in space provided.)
(ii) Calculate the same interval using CONFIDENCE.T. (Show work in space provided.)
(iii) Calculate the same interval using T.INV.2T.
(Note: when calculating the lower and upper bounds of the interval, do not use a rounded mean that you’ve calculated with AVERAGE. Use the unrounded mean. Round only the final answers, which are the lower and upper bounds of the interval. Also, make sure to use STDEV.S to calculate the sample standard deviation.)
Data:
28.6
18.4
19.2
25.8
19.4
20.5
Solutions
orchestra answered 2 years agoRelated Solutions
A random sample of six cars from a particular model year had the following fuel consumption...
A random sample of six cars from a particular model year had the
following fuel consumption figures (in miles per gallon). Find the
98% confidence interval for the true mean fuel consumption for cars
of this model year.
Sample Data
18.6
19.3
19.4
19.8
19.6
19.7
What is the left and right endpoint? Please help
A random sample of six cars from a particular model year had the following fuel consumption...
A random sample of six cars from a particular model year had the
following fuel consumption figures ( in miles per gallon). find the
98% confidence interval for the true mean fuel consumption for cars
of this model year.
Sample Data: 19.3 , 18.5 , 18.4 , 20.9 , 20.7 ,
18.7
Left Endpoint _____
Right Endpoint _____
The fuel consumption, in miles per gallon, of all cars of a particular model has a...
The fuel consumption, in miles per gallon, of all cars of a
particular model has a mean of 25 and a standard deviation of 2.
The population distribution can be assumed as normal. A random
sample of these cars is taken.
a. Find the probability that the sample mean fuel consumption
will be fewer than 24 miles per gallon if (i) a sample of 1
observation is taken, (ii) a sample of 4 observations if taken and
(iii) a sample...
A random sample of 6 cars from a particular model year had the following fuel consumption...
A random sample of 6 cars from a particular model year had the
following fuel consumption figures (in miles per gallon). Find the
99% confidence interval for the true mean fuel consumption for cars
of this model year.
Sample data:
20.9, 18.1, 18.5, 21, 20.3, 20.2
find left endpoint & right endpoint.
Compute in excel A random sample of six cars from a particular model year had the...
Compute in excel
A random sample of six cars from a particular model year had the
fuel consumption figures, measure in miles per gallon, shown below.
(i) Using T.INV, find a 90% confidence interval for the population
mean of fuel consumption for cars of this model year. Assume the
distribution is normal. (Round to 2 digits, since our raw data
below are expressed with one digit.) (Show work in space provided.)
(ii) Calculate the same interval using CONFIDENCE.T. (Show work...
Use Excel to Answer. A random sample of six cars from a particular model year had...
Use Excel to Answer.
A random sample of six cars from a
particular model year had the fuel consumption figures, measure in
miles per gallon, shown below.
Using T.INV, find a 90% confidence interval for the population
mean of fuel consumption for cars of this model year. Assume the
distribution is normal. (Round to 2 digits, since our
raw data below are expressed with one digit.) (Show work in space
provided.)
(ii) Calculate the same interval using
CONFIDENCE.T. (Show work...
The accompanying data represent the miles per gallon of a random sample of cars with a...
The accompanying data represent the miles per gallon of a random
sample of cars with a three-cylinder, 1.0 liter engine.
(a)
Compute the z-score corresponding to the individual who
obtained
41.4 miles per gallon. Interpret this result.
(b)
Determine the quartiles.
(c)
Compute and interpret the interquartile range, IQR.
(d)
Determine the lower and upper fences. Are there any
outliers?
32.7
34.0
34.7
35.4
36.0
36.2
37.3
37.6
37.7
37.9
38.1
38.5
38.6
39.0
39.2
39.4
39.9
40.7
41.4
41.8...
The accompanying data represent the miles per gallon of a random sample of cars with a...
The accompanying data represent the miles per gallon of a random
sample of cars with a three-cylinder, 1.0 liter engine.
(a)
Compute the z-score corresponding
to the individual who obtained
36.3
miles per gallon. Interpret this result.
(b)
Determine the quartiles.
(c)
Compute and interpret the interquartile range, IQR.
(d)
Determine the lower and upper fences. Are there any
outliers?
LOADING...
Click the icon to view the data
32.5
35.9
38.0
38.6
39.9
42.4
34.4
36.3
38.1
38.7
40.6
42.7...
The accompanying data represent the miles per gallon of a random sample of cars with a...
The accompanying data represent the miles per gallon of a random
sample of cars with a three-cylinder, 1.0 liter engine. (a)
Compute the z-score corresponding to the individual who obtained
38.4 miles per gallon. Interpret this result. (b) Determine the
quartiles. (c) Compute and interpret the interquartile range,
IQR. (d) Determine the lower and upper fences. Are there any
outliers? 32.5; 35.9; 37.6; 38.6; 40.4; 42.5; 34.0; 36.2; 37.8;
38.9; 40.6; 42.6; 34.7; 37.3; 38.1; 39.4 ;41.3; 43.4; 35.6; 37.4;...
the accompanying data represent the miles per gallon of a random sample of cars with a...
the accompanying data represent the miles per gallon
of a random sample of cars with a three-cylinder, 1.0 liter
engine. (a) compute the z-score corresponding to the individual
who obtained 38.7 miles per gallon. interpret this result. (b)
determine the quartiles. (c) compute and interpret the
interquartile range, iqr. (d) determine the lower and upper
fences. are there any outliers?39.939.9 42.442.4 34.634.6 36.336.3
38.138.1 38.938.9 40.540.5 42.842.8 34.734.7 37.537.5 38.338.3
39.439.4 41.441.4 43.643.6 35.235.2 37.637.6 38.538.5 39.739.7
41.641.6 49.049.0
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