Weights of Vacuum Cleaners Upright vacuum cleaners have either a hard body type or a soft body type. Shown are the weights in pounds of a random sample of each type. Find the 95% confidence interval for the difference of the means. Assume the variables are normally distributed and the variances are unequal. Round the sample mean and sample standard deviation to two decimal places and the final answers to at least one decimal place. 21 Hard body types 16 17 20 16 17 13 15 23 16 18 20 01₁-1₂-0 17 15 Soft body types 24 11 13 12 17 18 13 Send data to Excel Use μ, for the mean weight of the hard body type. OL E

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Weights of Vacuum Cleaners Upright vacuum cleaners have either a hard body type or a soft body type. Shown are the weights
in pounds of a random sample of each type. Find the 95% confidence interval for the difference of the means. Assume the
variables are normally distributed and the variances are unequal. Round the sample mean and sample standard deviation to two
decimal places and the final answers to at least one decimal place.
Hard body types
21
15
23
16
16 17 20
20
16
17
17
13
15
18
Send data to Excel
Soft body types
24 17 18 13
11 13 12
Use μ, for the mean weight of the hard body type.
dl
29
Transcribed Image Text:Weights of Vacuum Cleaners Upright vacuum cleaners have either a hard body type or a soft body type. Shown are the weights in pounds of a random sample of each type. Find the 95% confidence interval for the difference of the means. Assume the variables are normally distributed and the variances are unequal. Round the sample mean and sample standard deviation to two decimal places and the final answers to at least one decimal place. Hard body types 21 15 23 16 16 17 20 20 16 17 17 13 15 18 Send data to Excel Soft body types 24 17 18 13 11 13 12 Use μ, for the mean weight of the hard body type. dl 29
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