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The deviation of a magnetic needle from the magnetic pole in a certain area in northern Canada is a normally distributed random variable with mean 0 and standard deviation 1.00.
What is the probability that the absolute value of the deviation from the north pole at a given moment will be more than 2.4?
the time it takes to process phone orders in a small gift shop is normally distributed with a mean of 6 minutes and a
Consider the equilibrium in which every buyer bids his private value. What is the probability that buyer 1 wins the auction, under this equilibrium? What is the seller's expected revenue in this case?
The biologist examines 12 turtles exposed for a considerable period of time to oil. If the rate of occurrence of the blood disorder has not changed, what is the probability of each of the following events?
Draw a scatter diagram for the data in Table and determine by inspection if there is an approximate linear relationship between Yi and Xi .
A given data value has a Z-value equal to 1.2. Assuming a normal (i.e., symmetrical) continuous probability distribution, how many standard deviations is the data value from the mean?
Can you explain to me how the null and alternative hypothesis for one-sample testing differs from two-sample testing; and explain how these two hypothesis' are the same. Please provide a numerical example:
suppose the average family of 4 washes 2000 lbs of laundry each year. assume the variable is normally distributed with
Suppose each employee in the company receives a $3000 raise for next year (each employee's salary is increased by $3000). The interquartile range of the salaries will
Use the 45 sample means to determine whether the sampling distribution of the sample mean is approximately normally distributed by constructing a boxplot, relative frequency histogram, and normal quantile plot of the 45 sample means.
Sample data was collected in a study of calcium supplements and their effects on blood pressure. A placebo group and a calcium group began the study with blood pressure measurement.
Identify the independent and dependent variables in the following descriptions of experiments:- Students watched a cartoon either alone or with others and then rated how funny they found the cartoon to be.
With reference to Exercise 12, if n = 100, θ0 = 0.40, θ1 = 0.30, and α is as large as possible without exceeding 0.05, use the normal approximation to the binomial distribution to find the probability of committing a type II error
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