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The local preschool reported that it had 34% fewer accidents than the national average. The national average number of accidents reported by preschools is 5, with a standard deviation of 2.0. Use this information to answer the following questions:
What is the z score of the local county preschools?
Calculate the number of accidents of the local preschool (i.e. determine its "raw score").
A coffee store owner knows that a customer gets a coffee in 35% of the store's transactions. If we take a random sample of 300 customers, what is the probability that less than 32% of them buy a coffee?
Using z-scores, a population with m = 37 and s = 6 is standardized so that the new mean is m = 50 and s = 10. How does an individual's z-score in the new distribution compare with his/her z-score in the original population?
the american veterinary association claims that the annual cost of medical care for dogs averages 100 with a standard
A random sample of the starting salaries of 35 randomly selected graduates with bachelor's degrees last year gave sample mean and standard deviation $41,202.
A small electrical repair shop finds it has two main types of work. Customers bring items in for repair: TVs, videos, etc. require major repair.
Suppose that 30% of the applicants for a certain industrial job possess advanced training in computer programming. Applicants are interviewed sequentially and are selected at random from the pool. Find the probability that the first applicant wit..
The speed of cars passing through a checkpoint follows a normal distribution with μ = 62.6 miles per hour and σ = 3.7 miles per hour. What is the probability that the next car passing will ...
c. Describe a different example of where the independent variable, while highly correlated to the dependent variable, does not cause the dependent variable to change directly. d. Discuss the differences and relationship between correlation and dete..
a. How many ways can she select 5 of the 10 photographs? b. How many ways can she select the photographs of the 5 dead subjects?
a researcher is investigating the relationship between personality and birth order position. a sample of college
If it? is, identify a? success, specify the values of? n, p, and? q, and list the possible values of the random variable x.
You obtain an internship working in the fraud division of the District Attorney' office. One of the investigators believes that there is a tendency for those writing fraudulent checks to begin them with the number 5.
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