- During the recession period, people switch between brands while shopping and rarely stick to one bram According to a survey of customers, only 20% were loyal customers of a favorite cereal. a) Let Ybe the random variable that denotes the number of loyal buyers in a random sample of 10 customers. What are the possible values that X can assume? hb) Find the probability that in a random sample of 10 customers, i) exactly 6 were faithful buyers i) at least 6 were faithful buyers

- During the recession period, people switch between brands while shopping and rarely stick to one bram According to a survey of customers, only 20% were loyal customers of a favorite cereal. a) Let Ybe the random variable that denotes the number of loyal buyers in a random sample of 10 customers. What are the possible values that X can assume? hb) Find the probability that in a random sample of 10 customers, i) exactly 6 were faithful buyers i) at least 6 were faithful buyers

Name: 6. During the recession period, people switch between brands while sh
Uploaded: 2024-03-20T07:06:41.000Z
Channel: Bartleby
Description: 6. During the recession period, people switch between brands while shopping and rarely stick to one braneAccording to a survey of customers, only 20% were loyal customers of a favorite cereal.a) Let Xbe the random variable that denotes the number of

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

6. Three out of eight BS in Business Administration graduates are in banking industry. If 600 BS in Business Administration graduates are randomly selected, find the probability that 190 or less are in banking industry? Solution: nq =
Consider a group of four high school students with ages 15, 16, 18, and 19. A sample of two students is chosen randomly without replacement. Let random variable X bethe age of the students.a) Determine the probability distribution of the sample mean X .b) Find the mean and the standard deviation of Xby using the probabilitydistribution of X .
2) A machine that fills boxes of cereal underfills a certain proportion p. If 25 boxes are randomly selected from the output of this machine. Find the probabilitythat no more than two are underfilled when a) p = 0.1 b) p = 0.2
16. For a recent period of 100 years, there were 530 Atlantic hurricanes a) State the distribution, the parameters (for each case) and the support of the distribution. b.) Find the probability that over a period of 2 years there are fewer than 5 hurricanes. c.) Find the probability that over a 5 year period there are 10 hurricanes. d.) Find the probability that at least 2 hurricanes happen in a year.
5) Samples of size n = 2 are randomly selected with replacement from the popula- tion consisting of 2, 4, and 10, where the values represent the number of people in households. 5a) Find the mean of each of the nine samples and summarize the data in the form of a probability distribution. seroMvT as borolgo olgouq Ind upo o t te bas io 5b) Compare the population mean to the mean of the sample means in this example. Does this support the idea that sample means do not target the population means?
3. A company produces boxes of candy that contain a mean of 50 candies each. The standard deviation is 2. Quality control will reject any box with fewer than 48 candies. a) What is the probability that a box selected at random contains exactly 51 pieces? b) What proportion of the boxes will quality control reject as containing too few candies? c) The company produces 135 000 boxes of candy a day. How many of these boxes will have at least 48 candies but no more than 53?
The accompanying table describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. A. Find the probability of getting exactly 1 girl in 8 births. B. Find the probability of getting 1 or fewer girls in 8 births. C. Which probability is relevant for determining whether 1 is a significantly low number of girls in 8 births: the result from part (a) or part (b)? A. Since the probability of getting 1 girl is the result from part (a), this is the relevant probability. B.Since the probability of getting 0 girls is less likely than getting 1 girl, the result from part (a) is the relevant probability. C.Since getting 0 girls is an even lower number of girls than getting 1 girl, the result from part (b) is the relevant probability. This is the correct answer. D.Since the probability of getting more than 1 girl is the complement of the result from part (b), this is the relevant…
2. In Manoa Valley on the island of Oahu (Hawaii) the annual rainfall averages 43.6 inches with standard deviation 7.5 inches. A year is chosen at random, find the probability: a). the annual rainfall is more than 56 inches: b). the annual rainfall is less than 32 inches: c). the rainfall is between 35 and 50 inches:
Assume that the height, X, of a college woman is a normally distributed random variable with a mean of 65 inches and a standard deviation of 3 inches. Suppose that we sample the heights of 180 randomly chosen college women. Let M be the sample mean of the 180 height measurements. Let S be the sum of the 180 height measurements. All measurements are in inches. Using R and write the code out.a) What is the probability that X < 59? b) What is the probability that X > 59? c) What is the probability that all of the 180 measurements are greater than 59? d) What is the expected value of S? e) What is the standard deviation of S? f) What is the probability that S-180*65 >10? g) What is the standard deviation of S-180*65 h) What is the expected value of M? i) What is the standard deviation of M? j) What is the probability that M >65.41? k) What is the standard deviation of 180*M? l) If the probability of X > k is equal to .3, then what is k?
please answer ONLY d through f. I submitted this question twice but someone keep answering a through c when i specified D through F. thanks!