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.

the difference between a number and 5 is -2.

step-by-step explanation:

notice that the equation you are given has -2 (negative 2) on the right side, not 2. when you subtract 5 from a number n, you are finding the difference between the number and 5.

the difference between a number and 5 is -2.