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When the Zagat Survey®, a leading provider of leisure-based survey results, released its San Francisco Restaurants Survey, it marked the 25th year that Zagat Survey reported on diners and the 19th year that the company has covered San Francisco. The participants dined out an average of 3.2 times per week, with the average price per meal falling from the previous year from $34.07 to $33.75.
a. If the standard deviation of the price of meals in San Francisco was $10, determine the largest proportion of meal prices that could be larger than $50.
b. If the checks were paid in Chinese currency ($1 USD = 8.0916 Chinese yuan), determine the mean and standard deviation of meal prices in San Francisco. How would this change of currency affect your answer to part a?
the probability that a call-centre consultant receives 3 calls during any given hour is 0.1404 and the probability
Research results suggest that IQ scores for boys are more variable than IQ scores for girls (Arden & Plomin, 2006). A typical study looking at 10-year-old children classifies participants by gender and by low, average, or high IQ.
The sample was of 2,058 ?rms, and the regression slope estimate was -0.051. The reported p-value was 0.034.13 What was the standard error of the slope estimate? Interpret the ?ndings.
1.an advantage of the permutation test over the t test for a difference in means is thata.it gives accurate p-values
probability using pareto chart.1. use the pareto chart which shows the results of a survey in which 500 adults were
Draw a graph that displays the relative share of bedrooms in the sample and create a box-and-whisker plot for the distribution of the price of the homes and describe the shape. Is there evidence of outliers in the data?
What is statistical significance? If we randomly assign subjects to two groups we would expect there to be some difference in the groups just by chance. If a difference is statistically significant then it is large enough that we would not expec..
Let R be a relation on all real numbers x, y such that x is related to y if and only if x^2
Create a frequency table for the total number of people that prefer each type of music:
Show how a Monte Carlo simulation could facilitate a sensitivity analysis of the probabilities of the payoffs.
A regression line for a certain set of data is found to be y = 14 + 9x. The mean of y , or y bar, is 27. A particular data point is (2,40). What is the total variation in this point?
If 36 of these repair bills are randomly selected, find the probability that they have a mean cost between 271 dollars and 273 dollars.
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