The acceptable level for in food tem is 5insect fragments eggs, body parts, and

Question

The acceptable level for in food tem is 5insect fragments eggs, body parts, and so on) per 10 grams A simplo random sample of 40 ten gram portons of the food obtained and results in a sample mean ot x-5 insect tragments per ten-gram portion Complete parts (a) through (e) below (a) Why is the sampling dstribution of x approximately normal? O A. The sampling distribution ofxis approximately normal because the population is normally distributed the sample size is large enough O B. The samping distrbution of xis approximately normal because the population is normally distributodand O C. The sampling distribution of assumed to be approximately normal sizo is large enough Xis sample O D. The sampling distribution of i is approximately normal because the (b) What is the mean and standard deviation of the sampling dstribution ofx assuming n 5 and o V5? w (Round to three doomal places as needed) (Round three deomal places as needed) Click to select your answer(s)

Explanation / Answer

a)option D

b)mean =5

std deviation =(5/40)1/2 =0.3536

c)P(X>5.4)=1-P(Z<(5.4-5)/0.3536)=1-P(Z<1.1314)=1-0.8711=0.1289

option A) the result is not unusual

option B) since the result is not unusual..

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.