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Does happiness depend on one's marital status? Please consider the following set of data collected from a random sample:
Very Happy Married: 600 Widowed: 63 Divorced/Separated: 112 Never Married: 144
Somewhat Happy Married: 720 Widowed: 142 Divorced/Separated: 355 Never Married: 459
Not Too Happy Married: 93 Widowed: 51 Divorced/Separated: 119 Never Married: 127
Required:
(a) Please write the hypotheses that correspond to the above scenario.
(b) Please conduct a chi square test at an alpha = 0.05 level of significance. Provide your chi square table and output resulting from this analysis.
a. Find the salary of a college president whose z-score for that area was approximately +2.
40 numbers are rounded off to the nearest integer and then summed. if the individual round-off error are uniformly
You graduate and get hired at a management-consulting firm. On your first project, the decision maker says "I cannot assign a probability to the outcomes.
A 3?-card hand is dealt from a standard? 52-card deck, and then one of the 3 cards is chosen at random. If the chosen card is a? diamond, what is the probabilit
We found that average performance ratings do not differ between males and females in the population. Now we need to see if they differ among the grades. Is the average performace rating the same for all grades?
A drilling company has estimated a 40% chance of striking oil for their new well. A detailed test has been scheduled for more information.
Convert the given scale data to ordinal or ranked data, starting with a rank of 1 for the smallest data point.
Your manufacturing process makes parts such that each part meets specifications with probability 0.98. You need a batch of 250 parts that meet specifications.
What is wrong with Denzel Washington's logic (give the answer in both z scores and percentile ranks).
What is the probability that ABC will lose money during a year? - There is a 5% chance that ABC will earn a return of at least what value during a year?
a random sample of students was weighed after their first week of their first semester and weighed again after their
(a) State formally the hypotheses necessary to conduct a non directional test of no difference between the two population means.
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