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If a normally distributed population is mu=40 and alpha=10, what proportion of scores are between 37 and 43? if random sample size is n=25 are selected from this population, what proportion of sample means will have values between 37 and 43.
A quality engineer in a light bulb manufacturing factory is planning a study to estimate the average life of a large shipment of light bulbs.
Which represent errors of estimation for individual points, an alternative way to examine the error of the regression model using a single measurement is to determine the sum of all the residuals.
She decided to investigate and gather the following sample information. Would it be reasonable for her to conclude that union nurses earn more? Use the .02 significance level. What is the p value?
Administrators at a university are planning to offer a summer seminar. It costs $3000 to reserve a room, hire an instructor, and bring in the equipment. Assume it costs $25 per student for the administrators to provide the course materials.
Conclude whether the given conditions justify using the methods of this section when testing a claim about a population mean µ.
Assume you want to repeat the FDA experiment to achieve an estimation of the mean μ of the amount of caffeine content of a cup of coffee.
A machine fills containers with a mean weight per container of 16oz. If no more than 5% of the containers are to weigh less than 15.8oz, what must the standard deviation of weights equal?
Find out the expected shape of distribution of sample mean?
Given the following data, 1) how do you make Excel create a scatter diagram for you? 2) If you were to draw a line through the points, how straight would the line be?
A random samle of 12 college freshmen is obtained. The probability that exactly two of the 12 freshmen will not return for their sophmore year is?
The proportion of the American population that has disease Z is p=0.02. If 60 people are randomly selected from the population, what is the probability that at least 1 of them has disease Z?
A producer of pleasure boats wants to maximize revenue during the next month. Two types of boats are sold, x1 and x2. Type x1 sells for $40,000 and type x2 sells for $30,000.
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