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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.
Does the evidence suggest that postpartum women do not get enough sleep? Use =0.05 level of significance. How is the problem set up using the classical and P-value approach?
Suppose we have the following information from a simple regression: What is the coefficient of determination? What is the correlation coefficient?
A product is made up of two subsystems in parallel. Subsystem one consists of ten elements in series each with a failure rate of 1/100. The second subsystem consists of 5 elements in series each with a failure rate of 1/200. What is the overall re..
What is meant by the probability of an event? Discuss how addition and multiplication techniques are used to solve probability problems.
Suppose the mean cannot be adjusted but the standard deviation can be reduced. What maximum value of the standard deviation would make 90% of the parts acceptable to the consumer? (Assume the mean to be 1.012)
question describing data measures of central tendencynbspnbspnbspnbspnbspnbspnbspnbsp number of days from order date to
A hypothesis could be that the rate of teenage crime (13-19 year olds) 50 years ago in the United States was significantly lower than the rate of teenage crime is today.
The p-value for a test statistic is .085, what is the minimum level of significance required to reject the null hypothesis?
currently available medication is -9.4 minutes with a standard deviation of 2.8 minutes. Construct a 95% CI for the mean difference in times between the experimental and currently available medication.
What are the differences between regression and correlation analysis? What is correlation? Does correlation prove causation? Why or why not? Explain and provide examples to support your explanation.
Find out the probability distribution of blood types by gender in the group of 1000 individuals.The table below gives the distribution of blood types by gender in a group of 1000 individuals.
If you are told a population has a mean of 25 and a variance of 0, what must you conclude? a) Someone has made a mistake. b) There is only one element in the population.
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