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In a survey of 100 people who had recently purchased motorcycles, data on the following variables was recorded:
Gender of purchaserBrand of motorcycle purchasedNumber of previous motorcycles owned by purchaser Telephone area code of purchaserWeight of motorcycle as equipped at purchase
a. Which of these variables are categorical?
b. Which of these variables are discrete numerical?
c. Which type of graphical display would be an appropriate choice for summarizing the gender data, a bar chart or a dotplot?
d. Which type of graphical display would be an appropriate choice for summarizing the weight data, a bar chart or a dotplot?
Staff surveys are used to provide man agent of a snapshot of the safety culture within an airline at the ground level.the staff surveys have been conducted several years apart and are to be compared. In the paper please ,
At the .05 significance level, can we conclude that there is a difference in their mean times?
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If the standard deviation is 20 pounds, and the weight gain is normally distributed, how many hogs should receive the new experimental diet?
According to the National Restaurant Association, 20% of fine-dining restaurants have instituted policies restricting the use of cell phones. From a sample of 100 fine-dining restaurants,
when an engineer wants to send a binary signal a 0 or 1 signal through a communication channel assume that there is a
a random sample of size 64 is to be used to test the null hypothesis that for a certain age group the mean score on an
Preference to change blades is recorded. Do the data support the twin-blade manufacturer's claim? α=.05. This is a t-tests independent samples.
Is is possible to modify a semantic differential scale into a 10-point scale? If so, should the data be treated as ordinal or interval?
Design an imaginary study or discuss an actual study you've read about that has an experimental or quasi-experimental design that used or would use t-tests or ANOVAs in the data analysis.
mars inc. claims that they produce mampms with the following distributions
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