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MakcuM [25]
3 years ago
15

. A sample of 250 cans of peas showed an average weight of 14 ounces with a standard deviation of 0.7 ounces. If the distributio

n is relatively normal, how many cans will weigh over 14.7 ounces?
Mathematics
2 answers:
liraira [26]3 years ago
6 0

Answer:

40 cans weigh over 14.7 ounces

Step-by-step explanation:

Given

Mean = 14 ounces

SD = 0.7

We have to find the z-score for 14.7 first

z = \frac{14.7-14}{0.7}\\z = \frac{0.7}{0.7} = 1

As we have to find the number of cans greater than 14.7, forst we will find the area to the left of obtained z-score and then subtract from 1.

So,

P(z<1) = 0.8413

Now,

P(z>1) = 1 - P(z<1) = 1-0.8413 = 0.1587

As the total number of cans is 250,

The cans which weigh over 14.7 are:

= 0.1587 * 250

= 39.675

Rounding off to nearest whole number

40 cans

Hence,

40 cans weigh over 14.7 ounces

Ronch [10]3 years ago
3 0

Answer:

40 cans

Step-by-step explanation:

round your final answer to get 40

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