The accompanyingtable describes results from eight offspring peas. The random va

Question

The accompanyingtable describes results from eight offspring peas. The random variable x represents the number of offspring peas with green pods.

Find the probability of getting exactly 7 peas with green pods. (type a decimal)

Find the probability of getting 7 or more peas with green pods. (type a decimal)

Which probability is relevant for determining whether 7 is an unusually high number of peas with green pods, the result from part (a) or part (b)?

Is 7 an unusually high number of peas with green pods? (yes or no)

x(# of Peeas with green pods) P(x) 0 0+ 1 0+ 2 0.004 3 0.027 4 0.068 5 0.190 6 0.282 7 0.335 8 0.094

Explanation / Answer

(a) Getting Exactly 7 from the table

P(X=7) = 0.335

(b) P(X>=7) = P(X=7) + P(X=8) = 0.335 +0.094 = 0.429

(c)The answer in part (b) is the one which determines whether 7 is an unusually high result.
An outcome is unusually high if it is in the upper tail of the distribution - i.e., if the probability of getting it or a higher value is small.

(d) P(X>=7) = 0.429 is greater than 0.05
Thus, 7 is not an unusually high number of peas with green pods.

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.