Determining the degrees of freedom

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Dice. After getting trounced by your little brother in a children's game, you suspect that the die he gave you is un- fair. To check, you roll it 60 times, recording the number of times each face appears. Do these results cast doubt on the die's fairness?

Face

Count

1

11

2

7

3

9

4

15

5

12

6

6

a) If the die is fair, how many times would you expect each face to show?

b) To see if these results are unusual, will you test goodness- of-fit, homogeneity, or independence?

c) State your hypotheses.

d) Check the conditions.

e) How many degrees of freedom are there?

2

b) That brokerage firm also wants to know if the type of

f) Find x and the P-value.

Account affects the size of the account (in dollars). It per- forms a test to see if the mean size of the account is the same for the three account types.

g) State your conclusion.

Reference no: EM131008198

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