We want to take a sample of 100 items out of a large batch for quality control purposes. Based on past history, the proportion of defective items is 4%. Can we use the normal approximation to the binomial distribution to find the probability of finding more than 5 defective items in the sample of 100

np < 5, so we cannot use the normal approximation to the binomial distribution to find the probability of finding more than 5 defective items in the sample of 100

Step-by-step explanation:

If we have:

np > 5 and n(1-p) > 5

In which p is the proportion and n is the sample size, we can use the normal approximation to the binomial.

In this problem, we have that:

np = 100*0.04 = 4 < 5

So we cannot use the normal approximation to the binomial

np < 5, so we cannot use the normal approximation to the binomial distribution to find the probability of finding more than 5 defective items in the sample of 100

bottom left

step-by-step explanation:

the x's and the y's both go up the same amount each time, therefore it will be a linear function because it will go in a straight line when drawn on a graph.

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this story was prepared by jim

mccullaugh in los angeles and

al stewart in new york.

new york the colossal success of "top gun" appears to have dramatically altered madison avenue's

perception of corporate sponsorship

of home video projects.

the paramount home video re- lease, featuring a 60- second diet

pepsi spot, was by no means the

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first major theatrical release to do so. in the aftermath of the title's

success, paramount is widely ex- pected to ink a similar deal for

"crocodile dundee" or "star trek

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corporate america's new attraccds push british

recording sales

to 19% gain

london fueled by the compact

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rose 19% in the 12 -month period ended march 1987, according to the

british phonographic industry.

total value of u.k. shipments for

the period was $755 million for all

configurations. (all value figures

are based on an exchange rate of

$1.68 to the pound sterling.)

cd sales totaled 10.7 million units

worth $121.3 million- compared

with 3.7 million units worth $39.5

million in the prior 12 months -and

accounted for two -thirds of the

overall gain in trade value. at present growth rates, says the bpi, cd

sales for calendar 1987 will reach 20

(continued on page 79)

step-by-step explanation: