The critical value of chi-square is ____ when degrees of freedom equal 4 and "a" equals .05. A) 22.36 B) 9.49 C) 13.28 D) not enough information to determine.

3) You measure the length of 5 radish seedlings at 7 days and 10 days and get the following results in mm (do NOT use R except for part (d)): seedling #: 1 2 3 4 S 5 days: 30 20 38 49 32 33.8 10.686 7 days: 35 27 46 58 34 40 12.145 difference: -5 -7 -8 -9 -2 -6.2 2.775 (a) Is there a difference in length? (Note: this should be one-sided. Why??) (b) Repeat (a), but now use a regular (unpaired) t-test. (c) What happened in (b)? (d) Verify the normal distribution assumption for the paired t-test you did in (a). (You may use R for this part).

Can you justify the vaule shown in the picture for a case n= 3? what is the value of 5.196, 2pi, and 10.392 stand for?

Answers are attached plz look at that