Achef asks for your advice given that you are a student of business statistics. he tells you that it takes approximately a normally distributed mean of 35 minutes and a standard deviation of 2 minutes to cook a spaguetti and meatball meal. convert 31 minutes into a z-score given the z-score formula.

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Step-by-step explanation:

Given : A chef asks for your advice given that you are a student of business statistics.

He tells you that it takes approximately a normally distributed . and to cook a spaguetti and meatball meal.

Let x be a random variable that represents the time to cook a spaguetti and meatball meal.

Using the formula , the value of z for x= 31 we get

Hence, the z-score for 31 minutes = -2

let's first notice, the center of the hyperbola is at the origin, since the focus points are equidistantly 3 units away from the origin, that also means that the distance "c" from the center to either focus is 3.

it should also be notable that, the traverse axis for this hyperbola is vertical, or namely over the y-axis and therefore, the positive fraction will be the one with y-variable.

the traverse "a" component or distance from the center to either vertex is not 2, is more than 2, so we can safely put it at √5 ≈ 2.24.