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John Beale of Stanford, CA, recorded the speeds of cars driving past his house, where the speed limit read 20 mph. The mean of 100 readings was 23.84 mph with a standard deviation of 3.56 mph. (He actually recorded every car for a two-month period.)
How many standard deviations from the mean would a car going under the speed limit be?
A) -2
B) -1.08
C) 1.08
D) 2
An analyst wishes to include number of older siblings in family as a predictor variable in a regression analysis of factors affecting maturation in eighth graders. The number of older siblings in the sample observations ranges from 0 to 4.
Assume that you are conducting a survey of customer satisfaction regarding their cellular phone.
The Average GPA is known to be 2.67 with standard deviation = 0.58. What GPA will a student need to have to be admitted to the Tech school?
"What is the five-step process for hypothesis testing? Is the order important? Why or why not?"
Compute the sample variance and sample standard deviation as a measure of volatility of monthly total return for Chevron (to 2 decimals): Sample variance and Sample standard deviation.
What are the main difference between the frequency distribution of continuous data and discrete data.2. How would you present a continuous data as though discrete?
The town clerk, who monitors the voting booths, informed him that all the voters in the entire town registered at a recent election, and 310,000 votes were counted.
What do the coefficients of the regression line tell you about the relationship between mortgage rates and housing starts?
you are testing whether there is a significant difference in the proportions of college students and similar aged non college students having accidents during the two year period. Is this a one sample or two sample test?
For following data, find out whether or not right-hemisphere damage results in significantly decreased performance on spatial skills task.
The average number of miles that 90 truckers drove in a day was 540.0 with a standard deviation of 40 miles. What is the 99% confidence interval of the true mean number of miles driven by all truckers?
Suppose your prior on θ isuniform on [0, 1] and that she then makes two shots in a row. Assume that the outcomes of thetwo shots are independent.
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