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[answered] 1. What is the critical value? a.3.29 b.6.93 c.19.4 d.3.89

Attached are questions I need help with. Just the answer, no need to show work.

1. What is the critical value?

a.3.29

b.6.93

c.19.4

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?

a

b

c

d Neither test

Only test for blocks

Both Tests

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

b. False

10. Which average is the largest measure of central tendency in a

negatively skewed distribution?

a?

b?

c?

d? Arithmetic mean

Median

Mode

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

number.

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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DATE ANSWEREDSep 18, 2020

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