The average weight of a medium size egg is found to be 3.2 oz, with a standard deviation of 0.13 oz. what is the heaviest egg (to 2 decimal places) that we are 95% confident is still medium size? 3.2 oz 3.33 oz 3.45 oz 3.46 oz

C. 3.45 oz.

Step-by-step explanation:

We have been given that average weight of a medium size egg is found to be 3.2 oz with a standard deviation of 0.13 oz.        

Let us find z-score corresponding to 95% of the data under normal distribution curve. Using normal distribution table we get that 95% of area under the normal curve corresponds to z-score of 1.65.

Now we will use z-score formula to find our sample score.

, where,

= z-score,

= Random sample score,

= Mean,

= Standard deviation.

Upon substituting our given values we will get,

Therefore, the greatest weight of a medium size egg is 3.45 oz and option C is the correct choice.

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐