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Question: Car speeds. 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. These are 100 representative readings.)
a) How many standard deviations from the mean would a car going under the speed limit be?
b) Which would be more unusual, a car traveling 34 mph or one going 10 mph?
the army gives a battery of exams to all new recruits. one exam measures a persons ability to work with technical
Research and locate any data you are interested in for the entertainment industry, or alternatively, research demographics information.
In other words, you are finding the probability that a randomly selected cat will cost more than a randomly selected dog in terms of their annual medical costs.
Find the mean and standard deviation of X, the number of students in class, who will develop influenza.
Identify the key decision makers in public agencies and explain why political appointees are interested in decisions that yield short time results or outcomes.
For the following exercises, you do not use the Premiere Products database. 1. The DBA asks for your help in planning the data archive for the following Premiere Products database:
You have been called upon to assess whether a NICU nutrition protocol is working to promote growth in underweight babies. You have weight measurements at three time points: birth, 28 days and discharge from the hospital. You also have a variable i..
The following data are the median returns on investment, in percent, for 10 industries.- Find the median of these medians and their mean.
Ppaid full salary for the current year. a. Determine how to minimize the bus company's salary, hiring, and firing costs over the next 5 years.
One of the intervals of interest is the interval 60 to 80. Based on the given information, what is the relative frequency for the interval 60 to 80 in this particular class?
As in Exercise 9, you want to estimate the proportion of traditional college students on your campus who own their own car. However, from some research on other college campuses, you believe the proportion will be near 20%.
at cruising altitude a commercial jet engine consumes an average of 850 gallons of fuel per hour with a standard
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