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Derive rules to test whether a number is divisible by N, where N ranges from 2 to 13. E.g. A number is divisible by 3 if the sum of the digits is divisible by 3. Show that a palindromic number which has an even number of digits is always divisible by 11.
One of 4 bus drivers is also arbitarily selected. Let Y denote number of students on his bus. Caculate expectations of X and Y: E(X)=?
Use the relative frequency approach to construct a probability distribution for the number of tests taken.
A campus organization will select one day of the week for an end of year picnic. Assume that the weekdays, Monday through Friday, are equally likely and that each weekend day
Patrick was studying effects of small rewards (such as candy, gum, and soda pop) on intrinsic motivation. He tested fifth-grade children in a special room set aside by the school.
The Daytona Beach Tourism Commission is interested in the average amount of money a typical college student spends per day during Spring Break.
A multiple-choice examination consists of 90 questions, each having possible choices a, b, c, d, and e. Approximate the probability that a student will get at least 21 answers correct if she randomly guesses at each answer.
As part of study of the development of the thymus gland, researchers weighed the glands of five chick embryos after 14 days of incubation. Calculate the standard error of the mean.
A company makes molded plastic toys. They study the plastic injection process into the molds. A common cause of variation and What are the control limits for an chart
a. State the appropriate hypotheses for your significance test. b. Use the sample results to compute the test statistic and the p-value.
Using Binomial approximation, find the proportion of the days that will be rejected.
Construct the 95 percent confidence interval for the difference between the two population means.
Consider how you might apply radical expressions to your daily life. Explain this application, and discuss what the equation might be.
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