Attached are questions I need help with. Just the answer, no need to show work.
1. What is the critical value?
d.3.89 2. 3. 4. 5. Which of the two tests (test for treatment and test for blocks should
reject the null hypothesis using a level of significance of 0.05?
d Neither test
Only test for blocks
Only test for treatment 6. Find the critical value from the Studentized range distribution for
H0: ?1 = ?2 = ?3 = ?4 = ?5, with n = 35 at? = 0.01. Provide answer to
three decimal places (example, 3.254). 7. A researcher wishes to determine whether there is a difference in the average age of middle school, highschool, and
college teachers. Teachers are randomly selected. Their ages
are recorded below. Use ? = 0.01.Which of the following is a
correct statement about the means? 8. Researchers wanted to determine if the psychological profile
of healthy children was different than that for children
suffering from recurrent abdominal pain (RAP) or recurring
headaches. Results of the study are summarized in the
following table. Determine which pairwise means of the three
treatment groups, if any, are different using a familywise error
rate of alpha = 0.05. 9. A sample of 2,845 auto workers was selected to learn if they
would go on strike. Over 50% of those in the sample declared
they would strike. We can assume that the majority of all auto
workers favor a strike since the number sampled is large and
those in favor of a strike are over 50%. a. True
10. Which average is the largest measure of central tendency in a
negatively skewed distribution?
d? Arithmetic mean
Geometric Mean 11. Use the information in the following table for the next few
questions. The following statistics represent samples of copper wire
submitted by two companies for tensile strength testing (psi). 12. The middle 50 percent of the wires of Company A tested
between _____ and _____. Record the lower limit as a whole
13. Which company's distribution has the larger dispersion
(answer either 'A' or 'B')?
14. The variance for Company A is _____? (whole numbers only) 15. A company has received 20 purchase orders. The shipping
department has been given 8 orders to fill. There are _____ different
orders the shipping department could be given to fill. (answer should
be numbers only - no commas).
16. The outcomes must be equally likely for the relative
frequency probability approach to be used. a. True
b. False 17. Medical statistics indicate that 20% of the population will have
cancer in their lifetimes. A group of 12 babies is selected at random.
Use the tables in the textbook to determine the following. The
probability that exactly 5 in the group will get cancer in their lifetime
is _____. Record the answer to four decimal places (x.xxxx).
18. Using the information from the previous question, the probability
that at least 5 will get cancer in their lifetime is ______. (x.xxxx)
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