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2 years ago

(50 points!)

Mathematics

1 answer:

Maru [420]2 years ago

6 0

(y x .12) x .3 = the total cost

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The fraction of defective integrated circuits produced in a photolithography process is being studied. A random sample of 300 ci

4vir4ik [10]

Answer:

(a) The confidence interval is: 0.0304 ≤ π ≤ 0.0830.

(b) Upper confidence bound = 0.0787

Step-by-step explanation:

(a) The confidence interval for p (proportion) can be calculated as

$p \pm z*\sigma_{p}$

$\sigma=\sqrt{\frac{\pi*(1-\pi)}{N} }\approx\sqrt{\frac{p(1-p)}{N} }$

NOTE: π is the proportion ot the population, but it is unknown. It can be estimated as p.

$p=17/300=0.0567\\\\\sigma=\sqrt{\frac{p(1-p)}{N} }=\sqrt{\frac{0.0567(1-0.0567)}{300} }=0.0134$

For a 95% two-sided confidence interval, z=±1.96, so

$\\LL = p-z*\sigma=0.0567 - (1.96)(0.0134) = 0.0304\\UL =p+z*\sigma= 0.0567 + (1.96)(0.0134) = 0.0830\\\\$

The confidence interval is: 0.0304 ≤ π ≤ 0.0830.

(b) The confidence interval now has only an upper limit, so z is now 1.64.

$UL =p+z*\sigma= 0.0567 + (1.64)(0.0134) = 0.0787$

The confidence interval is: -∞ ≤ π ≤ 0.0787.

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2 years ago

Solve the algebraic expression below (2/5) (10) + 8

Andrews [41]

Answer: 12.

Step-by-step explanation:

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1 year ago

Rob has 7 ones. nick has 5 ones. they put all their ones together. what number did they

levacccp [35]

It would be 12 ones it would be this because you have to add 7+ 5

5 0

2 years ago

Mari adds 4 spoonfuls of honey to a pitcher of iced tea.Each spoonful holds 5 mL of honey. How many mL of honey did Mari add in

Marina86 [1]

The answer is fir this question 20 ml

7 0

2 years ago

Read 2 more answers

4/5-11/15 can you help me?

Ainat [17]

Answer:

$\frac{1}{15}$ is the answer.

Step-by-step explanation:

$\frac{4}{5} - \frac{11}{15}$

Change the denominators to 15.

$\frac{12}{15} - \frac{11}{15}$

12 - 11 = 1.

= $\frac{1}{15}$

5 0

1 year ago