blackboard.ecuedu 2283 Test 1-MATH22836022018. Sta StatCrunch - Data analysis on

Question

blackboard.ecuedu 2283 Test 1-MATH22836022018. Sta StatCrunch - Data analysis on the Web A right skewed distribution is not symnetricalia Remaining Time: 1 hour,05 minutes, 47 seconds Question Completion Status QUESTION Y 4 points The lifetime (in weeks) of a certain type of lightbulb is approximately bell-shaped, with mean 328 and standard deviation 4 If one lightbulb from this distribution has a z-score of-3, what is its lifetime? O A 276 316 O c. 228 340 O B QUESTION 10 points Sae Arswer Click Sove and Submit to sque and submit.Click Save All Answers to save all answers Save All Answers Save and Submit

Explanation / Answer

Since z - score = -3

Hence,

Lifetime of the given lightbulb = 328 - 3*4 = 316

Option B is correct.

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