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For each of the following statements, give the null hypothesis (Ho), and the alternate hypothesis (H1).
1. The mean (average) pulse of lawyers is 80.
2. The mean (average) salary of your employees is at least $23,000
3. The mean (average) number of children your employees have in daycare more than 3.
4. The mean (average) percent of students passing the 12th grade proficiency exam is less than 40%.
5. The mean (average) amount of money spent per student on tutoring is $600.
The proportion of left handers is 0.10. What is the number of left handers in the sample and what notation is given to that number?
Conduct a marketing experiment in which students are to taste 1 of 2 different soft drinks. What is the probability that the sample will have between 50% and 60% of the identificaton
In a study of elephants a researcher wishes to determine the average weight of a certain subspecies of elephants. From previous studies, the standard deviation of the weights of elephants in this subspecies is known to be 1500 pounds.
Make a scatter plot of Y and X1 using Word. To do this click on insert and then chart. Click on X Y (Scatter). Enter the data from the table.
A computer software developer would like to use the number of downloads (in thousands) for the trial version of his new shareware to predict the amount of revenue
What do these results say about testing with group data? Include in your answer the URLs of the sites where you found the necessary data.
Suppose it costs $25 per student for the administrators to provide the course materials.
Conduct an analysis of variance
What is the null and alternative hypothesis (in symbols) for this t-test and use the appropriate t-test statistic?
Robinson & Associates performs employment screening for large companies in southern California. It usually follows two-step process. First potential applicants are given a test that covers basic knowledge and intelligence. If applicants score b..
The U.S. Bureau of Prisons publishes data in Statistics Report on the times served by prisoners released from federal institutions for the first time.
Candidate A is running for president of the student government at a large university.
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