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1. The probability that a bearing fails during the first month of use is 0.12. What is the probability that it does not fail during the first month?
2. An die (six faces) has the number 1 painted on three of its faces, the number 2 painted on two of its faces, and the number 3 painted on one face. Assume that each face is equally likely to come up.
a. Find a sample space for this experiment.
b. Find P(odd number).
c. If the die were loaded so that the face with the 3 on it were twice as likely to come up as each of the other five faces, would this change the sample space? Explain.
d. If the die were loaded so that the face with the 3 on it were twice as likely to come up as each of the other five faces, would this change the value of P(odd number)? Explain.
About 40% of the general population donate time and energy to community projects. Suppose 15 people have been randomly selected from a community and each asked whether he or she donates time and energy to community projects.
The average demand for carpet from the stores that purchase from the distributor is 4500 yards per month, with a standard deviation of 900 yards. what is the probability that a customer's order will not be met during a month?
At the .10 significance level you will test to determine if there has been an increase in selling time. Assuming we are using a t test what will be the critical value"?
questions1. compare and contrast internal and external validity. describe and give examples of research questions for
What's the most appropriate procedure for evaluating the relationship between tenure and divorce? What is the correlation and how can it be interpreted in terms of magnitude, direction and practical importance?
What can you learn about the distribution of the installation process? Does it appear that the country has an impact on installation time? Why or why not?
A test was conducted to find out whether gender of a spokesperson affected the likelihood that consumers would prefer a new product. A survey of consumers at trade show employing a female spokesperson determined that 70 out of 150 customers prefe..
It is important for a woman to know if she is pregnant so that she can discontinue any activities, medications, exposure to toxins at work, smoking, or alcohol consumption that could be potentially harmful to the baby.
If the price is 9 on Monday, what is the probability that it will be 11 on Friday? Find the proportion of the time, in the long run, that the price will be each of the three possible values.
The McBurger restaurant chain claims that the waiting time of customers for service is normally distributed with a mean of 3 minutes and a standard deviation of 1 minute.
the wind mountain archaeological site is located in soutwestern new mexico. wind mountain was home to a culture of
A random sample of 100 workers in this industry has a mean daily wage of $124. Find a 95% confidence interval for the true mean daily wage of all union workers in the industry.
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