Hello

I have huge problem cause i have a test on tuesday and don't know anything about z-scores.

Here is the question:

Agricultural scientists are working on developing an improved variety of roma tomatoes. Marketing research indicates that customers are likely to bypass Romas that weigh less than 70 grams. The current variety of roma plants produces fruit average of 74 grams, but 11% of the tomatoes are too small. It is reasonable to assume that a normal model applies.

a) what is the standad deviation of the weights of the Roams now being grown.

b)Scientists hope to reduce the frequency of undersized tomatoes to no more than 4% one way to accomplish this is the raise the average size of the fruit. ifthe standard deviation remains the same what target mean should they have as a goal?

The only thing i know is that i have to use that formula: z= (y-µ)/standard deviation. If there is a possiblity to do it on Minitab than pls tell me111

PLEASE GUYS HELP ME!!

Greets

RubberDuck

I have huge problem cause i have a test on tuesday and don't know anything about z-scores.

Here is the question:

Agricultural scientists are working on developing an improved variety of roma tomatoes. Marketing research indicates that customers are likely to bypass Romas that weigh less than 70 grams. The current variety of roma plants produces fruit average of 74 grams, but 11% of the tomatoes are too small. It is reasonable to assume that a normal model applies.

a) what is the standad deviation of the weights of the Roams now being grown.

b)Scientists hope to reduce the frequency of undersized tomatoes to no more than 4% one way to accomplish this is the raise the average size of the fruit. ifthe standard deviation remains the same what target mean should they have as a goal?

The only thing i know is that i have to use that formula: z= (y-µ)/standard deviation. If there is a possiblity to do it on Minitab than pls tell me111

PLEASE GUYS HELP ME!!

Greets

RubberDuck

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