Help MTH 240-41H Save Homework: Homework 8.1 Score: 0.67 of 1 pt 18.1.27-T The a

Question

Help MTH 240-41H Save Homework: Homework 8.1 Score: 0.67 of 1 pt 18.1.27-T The acceptable level for insect filth in a certain food item is 3 insect fragments (larvae, eggs, body parts, and so on) per 10 grams. A simple random sample of 50 IO of 13 (13 complete) Hw Score: 80.1%, 10.41 of 13 pts ten-gram portions of the food item is obtained and results in a sample mean of x-3.7 insect fragments per ten-gram portion. Complete parts (a) through (c) belovw B. The sampling distribution of x is approximately normal because the sample size is large enough. C. The sampling distribution of x is approximately normal because the population is normally distributed. D. The sampling distribution of x is approximately normal because the population is normally distributed and the sample size is large enough. (b) What is the mean and standard deviation of the samping distribution of x assuming-3 and = ? Enter your in the answer box and then click Check Answer

Explanation / Answer

b)
mean = 3
sd(Xbar) = sigma/sqrt(n)
= sqrt(3/50) = 0.2449489
= 0.245

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