Hi need the correct answers. Thanks. Waiting times in an Aldi store follow an ex

Question

Hi need the correct answers. Thanks. Waiting times in an Aldi store follow an exponential distribution with a mean time of 8 minutes. What is the probability that the waiting time for the next customer will be 5 minutes or less? A) 0.528 B) 0.465 C)0.972 D)0.328 Why is the central limit theorem important in statistics? A) Because for a large sample size n, it says the sampling distribution of the sample mean is approximately normal, regardless of the shape of the population. B) Because for any sample size n, it says the sampling distribution of the sample mean is approximately normal. C) Because for a large sample size n, it says the population is approximately normal. D) Because for any population, it says the sampling distribution of the sample mean is approximately normal, regardless of the shape of the population. The sales representative for a manufacturer of a new product claims that the product will increase output per machine by at least 29 units per hour. A line manager installs the product on 15 of the machines, and finds that the average increase was only 26 with a standard deviation of 6.2. What are the appropriate null and alternative hypotheses? A) H_0: mu = 29 and H_1: mu notequalto 29 B) H_0: mu greaterthanorequalto 29 and H_1: mu 29 D) H_0: mu > 29 and H_1: mu lessthanorequalto 29

Explanation / Answer

9) P(X<5) =1-e-5/8 =0.4647

option B

10)option A is correct

11)

option B is correct

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

---

---

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