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The manufacturer of an extended-life lightbulb claims the bulb has an average life of 13,000 hours with a standard deviation of 1,000 hours. If the distribution is normal, what is the approximate percentage of these bulbs that will last
A. Between 11,000 and 15,000
B. Between 8,000 and 21,000
a shipment of 20 cameras include 3 that are defectivegt what is the minimum number of cameras that must be selected
Explain some valid reasons for why an investor may choose to invest in bonds? To invest in stocks? In other words, what are the advantages of each?
Construct the regression equation for the data using this information. Round your answer to three decimal places.
Repeat the above exercise for predictions of the starting salary distribution in his or her first employment after completing their current educational course.
Construct the two fold association table and calculate the coefficient of association - number of passed candidates exceeded the number of failed candidates by 310. Boys failing in the examination numbered 88.
1. The symbol b represents the probability of rejecting H0 when H0 is false.
As the upper limit of normal are identified as abnormal. What percentage of values would fall in this range?
Of those receiving aid, 41% of the males got federal aid and 51.1% of the females got federal aid. Choose 1 student at random (Hint: Make a tree diagram.)
Find a stable matching A between the universities and the applicants that is preferred by all the applicants to any other stable matching.
Of those who said no to both, about 1 in 5 died within 6 months after their operation. What is the relative risk of death (within 6 months) for the two groups? Write your answer in a sentence or two that would be understood by someone with no trai..
What fraction of American males weigh more than 225 pounds?
in 1945 1100 adult americans were asked if they abstain from alcoholic beverages and 363 indicated that they were total
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