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1) Critically discuss the reasons for studying statistics?
2) Choose five random numbers between 70-100. Calculate the mean, and midrange of these numbers. Base on the calculations, which measure of central tendency best represents these numbers?
Determine the test value? Use α = 0.05. (Use the variances unequal formula).
You're a risk manager of ABC company and you are reevaulating your insurance contract. Your insurer has informed you that the expected value of frequency per month for ABC is 2.43.
If you did not know anything about standard deviation of population from which sample was taken, find out the 95% confidence interval for mean test score.
Determine the probability that a randomly selected teacher earns more than $525 per week?
Use a scatter plot to determine the relationship between the x values and the y values.
Create probability tree showing all marginal, conditional, and joint probabilities. Create a joint probability table.
The probability of getting a promotion and a raise is 0.25. What is the probability of getting a raise.
Explain the strength of relationship between the assets?
Survey on What do you think is the biggest problem facing education today. One problem with exit polls may be that the wrong "key precincts" were chosen.
Formulate the hypotheses that can be used to determine whether union membership increased in 2006.
Obtain a test statistic and p -value assuming equal variances. Interpret these results.
Public transportation and the automobile are two methods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes.
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