Determine the margin of error
Suppose you calculate a 99% confidence interval of 14.22 to 21.23. Determine the margin of error
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A small life insurance company has determined that on the average it receives 3 death claims per day. What is the probability that the company receives at least seven death claims on a randomly selected day.
You want to compare years of schooling among American adults who describe their political veiwpoint as liberal, moderate, or conservative. You gather a random sample of American adults in each of these three categories of political viewpoint.
The volume of a soda dispensing machine pours into a 12-ounce can of soda follows a normal distribution with a mean of 12.30 ounces and a standard deviation of .20 ounce
The waiting time (in minutes) between ordering and receiving your meal at a certain restaurant is exponentially distributed with a mean of 10 minutes. The resturant has a policy that your meal is free if you have to wait more than 25 minutes after
Statistical Abstracts (117th edition) reports that the average amount spent annually for food by householders under 25 years of age is $2,690. A random sample of 16 people under 25 years of age who live in a university neighborhood were surveyed.
Assume you have applied for two jobs, A and B. the probablility that you get job a is .13. the probability of being offered job B is .18. the probability of getting atleast one of the jobs is .26.what is the probability that you will be offered bo
In 2010, 91% of households had at least one cell phone. A random sample of 300 households in each of two different counties indicated the following. At the 0.01 level of significance. Can it be concluded that a difference in proportions exists?
The amounts a soft drink machiene is designed to dispense for each drink are normally distributed, with a mean of 12.2 fluid ounces and a standard deviation of 0.3 fluid ounce. A drink is randomly selected.
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