A restaurant chain has noticed 40% of diners order the dessert special if there is a promotion related to their meal. If there are 200 diners in one evening, can we assume this p-bar distribution is normal, to determine P(more than 100 (50%) desserts will be ordered)? Yes, because np>5 and n(1-p)>5. Yes, because 100>30. O Yes, because 200>30. O No, there is not enough information.

A restaurant chain has noticed 40% of diners order the dessert special if there is a promotion related to their meal. If there are 200 diners in one evening, can we assume this p-bar distribution is normal, to determine P(more than 100 (50%) desserts will be ordered)? Yes, because np>5 and n(1-p)>5. Yes, because 100>30. O Yes, because 200>30. O No, there is not enough information.

Name: A restaurant chain has noticed 40% of diners order the dessert specia
Uploaded: 2024-03-20T07:06:41.000Z
Channel: Bartleby
Description: A restaurant chain has noticed 40% of diners order the dessert special if there is apromotion related to their meal.If there are 200 diners in one evening, can we assume this p-bar distribution isnormal, to determine P(more than 100 (50%) desserts w

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

An airport in a country that has an elevated occurance of terrorism profiles airline passengers and semi-randomly selects who will undergo additional screening. If one person is stoped, everyone they are traveling with is also stopped. Over the course of several months, the airport security stops 15% of passengers for this extra screening. On a certain day. 519) passengers go through security at this airport. Let the variable be the number of those people who are chosen for additional screening. Is the number of passengers who are chosen for additional screening a binomial random variable? Select all that apply. Yes. All four conditions are met. No. There is not a fixed number of trials. No. The trials cannot reasonably be assumed to be independent. No. The outcomes cannot be described as only "success" and "failure." No. The probability of success is not the same for each trial.
A veterinarian keeps track of the types of animals treated by an animal clinic. The following distribution represents the percentages of animals the clinic has historically encountered. Animal type Dogs Cats Livestock Birds Other Percent 61% 22% 8% 6% 3% If the animal clinic treats 230 animals in a month, how many of each animal type would be expected? Animal type Dogs Cats Livestock Birds Other Вxреcted 61 22 8. 9. 3) Animal type Dogs Cats Livestock Birds Other Еxpected 122 44 16 12 Animal type Dogs Cats Livestock Birds Other Еxpected 51 18 14 7. 140 Animal type Livestock Birds Other Dogs Cats Еxресted 46 46 46 46 46 Animal type Dogs Cats Livestock Birds Other Expected 140,3 50.6 18.4 13.8 6.9 E.
A researcher uses an anonymous survey to investigate the study habits of American college students. The entire group of American college students is an example of a(n)
2. Teachers want to know which night each week their students are doing most of their homework. Most teachers think that students do homework equally throughout the week. Suppose a random sample of 56 students were asked on which night of the week they did the most homework. The results were distributed as in the table below. Number of Students Sunday Monday Tuesday Wednesday Thursday Friday 11 5 8 10 7 10 Saturday 5 From the population of students, do the nights for the highest number of students doing the majority of their homework occur with equal frequencies during a week? What type of hypothesis test should you use? (You must justify your answer with a complete hypothesis test and an explanation, within context, using complete sentences.)
What is the distribution of p when the sample is "large enough"? O A. P(1-P) -N P. O B. P(1-p) P. n-1 Oc. p(1-p) -N P, n-1 O D. ~Np, p(1-p) O E. p(1-p)
A manufacturing plant knows that in reality 80% of products made are perfect. An inspector selects four products at random. What is the mean number of perfect products in any sample of 4? It can be assumed that each product is independent of the others.
Truffles are a great delicacy, sending thousands of mushroom hunters into the forest each fall to find them. A set of plots of equal size in an old-growth forest in Northern California was surveyed to count the number of truffles (Water et al. 1997). The resulting distribution is pre- sented in the following table. Are truffles ran- domly located around the forest? If not, are they clumped or dispersed? How can you tell? (The mean number of truffles per plot, calculated from these data, is 0.60.) Number of truffles per plot 0 1 2 3 > 3 Frequency 203 39 18 13 15
n a study of pain relievers, 50 people were given product A, and 33 experienced relief. In the same study, 25 pe and 19 experienced relief. Fill in the blanks below to make the most reasonable statement possible. Product (Choose one) performed worse in the study. That is because % failed to get relief with this product, whereas only failed to get relief with Product (Choose one)
Watch Corporation of Switzerland claims that its watches on averagewill neither gain nor lose time during a week. A sample of 18 watchesprovided the following gains (+) or losses (-) in seconds per week. -0.38 -0.20 -0.38 -0.32 +0.32 -0.23 +0.30 +0.25 -0.10 -0.37 -0.61 -0.48 -0.47 -0.64 -0.04 -0.20 -0.68 +0.05 Is it reasonable to conclude that the mean gain or loss in time for thewatches is 0? Use the .10 significance level. Estimate the p-value.
What is your favorite color? A large survey of countries, including the United States, China, Russia, France, Turkey, Kenya, and others, indicated that most people prefer the color blue. In fact, about 24% of the population claim blue as their favorite color.t Suppose a random sample of n = 59 college students were surveyed and r = 8 of them said that blue is their favorite color. Does this information imply that the color preference of all college students is different (either way) from that of the general population? Use a = 0.05. A USE SALT (a) What is the level of significance? State the null and alternate hypotheses. O Ho: p = 0.24; H,: p + 0.24 O Họ: p = 0.24; H: p 0.24 (b) What sampling distribution will you use? O The standard normal, since np > 5 and ng > 5. The standard normal, since np 5 and ng > 5. The Student's t, since np < 5 and ng < 5. What is the value of the sample test statistic? (Round your answer to two decimal places.) (c) Find the P-value of the test statistic.…