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A poll reported that 65% of adults were satisfied with their job the major airlines where doing. Suppose 9 adults are selected at random and the number who are satisfied is recorded. Find the probability taht exactly 6 are satisifed with the airlines. Find the probability that fewer than 4 are satisfied with the airlines. Find the probability that 5 or more are satisfied with the airlines. Find the probability that between 3 and 6 inclusive, are satsified with the airlines.
Describe a specific application of statistics that either has a direct effect on you or your life.
Find out the crude death rate, age specific death rate, standard death rate and adjusted death rate.
Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.
The annual returns, in percentages, on stocks A and B for three possible states of the economy are given in the table below.
In the real world, given null hypothesis is false; but the collected data lead to the null hypothesis being accepted. That is, the data lead to a failure to reject null hypothesis.
A function sometimes associated with a continuous nonnegative random variable is the failure rate (or hazard rate) function which is defined as:
According to table, which presents a MODI solution for a transportation problem, if that solution is used, which of the following is true.
If p denotes the p -value of the corresponding hypothesis test, which of the following is true?
A haulage contractor has two loads to deliver to separate customers. He has 4 trailers of which 2 are new. If the trailers are randomly chosen for any particular delivery: (a) In how many ways can the trailers be allocated the deliveries?
If the estimate is to be within 8 mpg of the true mean with 98% confidence and the estimated standard deviation is 22 mph, how large a sample size must be taken?
A sample of 120 homes sold recently in a big city gave the mean price of homes equal to $270,000 and the standard deviation equal to $70,000. (a) What is the point estimate of the mean price of all homes in the big city?
The study does not give sufficient evidence to support the claim that less than 75% of college students spend less than $250 per semester on textbooks.
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