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Researchers at the University of Houston decided to test the hypothesis that restaurant servers who squat to the level of their customers would receive a larger tip ("Effect of Server Posture on Restaurant Tipping," Journal of Applied Social Psychology [1993]: 678-685). In the experiment, the waiter would ?ip a coin to determine whether he would stand or squat next to the table. The waiter would record the amount of the bill and of the tip and whether he stood or squatted.
a. Describe the treatments and the response variable.
b. Discuss possible extraneous factors and how they could be controlled.
c. Discuss whether blocking would be necessary.
d. Identify possible confounding variables.
e. Discuss the role of randomization in this experiment.
Can you conclude that engineers follow an accident profile that is different from the rest of the drivers in the region?
Write a current APA-style Results section based on your analyses - Create a simple scatterplot of the relationship between these variables (define interview scores as the x-axis and behavioral ratings as the y-axis).
errors in a billing process often lead to customer dissatisfaction and ultimately hurt bottom-line profits. an article
Using the information provided, determine the optimal number of clerks to have on duty each Satyrday to minimize the store's total expected cost.
blood type ab is found in only 3 of the population. if 290 people are chosen at random find the probability of the
Calculate the average hours of sleep per night for each sample. According to the 95 part of the 68-95-99.7 rule, 95% of all values of fall within __________ on either side of the unknown mean . What is the missing number?
Assume the risk-free interest is 5%. If WT borrows $100 million today at this rate and uses the proceeds to pay an immediate cash dividend, what will be the market value of its equity just after the dividend is paid, according to MM?
A local group claims that the police issue more than 60 speeding tickets a day in their area.
suppose a random smaple of size 36 is drawn from a population with a mean of 278. if 86 of the time the sample mean is
What is the relationship between the amount spent per week on food and the size of the family? Do larger families spend more on food?
how old are college students? the national age distribution for college students is shown below. national age
List all samples of 3 and compute the mean of each sample. Compute the mean of the distribution of sample means and population mean. compare the two values
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