Helppp pleaseee :)))
1 answer:
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- + 6
divide each term on the numerator by 7b
= - 7 / 7b + 42
/ 7b
= - + 6
Answer:
And replacing we got:
And we can calculate this probabilit using the normal standard distribution or excel and we got:
Step-by-step explanation:
If we define the random variable of interest "the amount spent by a family of four of food per month" and we know the following parameter:
And we want to find the following probability:
And we can use the z score formula given by:
And replacing we got:
And we can calculate this probabilit using the normal standard distribution or excel and we got: