Trader Joe's is a privately held chain of specialty grocery stores in the United States. It has developed a reputation as a unique grocerystore selling products such as gourmet foods, beer and wine, bread, nuts, cereal, and coffee. One of their best-selling nuts is a 16-ouncepackage of Raw California Almonds. Since it is impossible to pack exactly 16 ounces in each packet, a researcher has determined thatthe weight of almonds in each packet is normally distributed with a mean and a standard deviation equal to 16.01 ounces and 0.08ounces, respectively.a. Discuss the sampling distribution of the sample mean based on any given sample size.b. Find the probability that a random sample of 20 bags of almonds will average less than 16 ounces.c. Suppose your cereal recipe calls for no less than 48 ounces of almonds. What is the probability that three packets of almonds willmeet your requirement?

Given:• The weight of almonds in each packet is normally distributed.• Mean weight (μ) = 16.01…

Answered: Trader Joe's is a privately held chain…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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3. A magazine publishes a U.S. and a Canadian edition each week. There are 30,000 subscribers in the U.S. and 20,000 subscribers in Canada. Other copies are sold at newsstands. Postage and shipping costs average $80 per thousand copies in the U.S. and $60 per thousand copies in Canada. Surveys show that no more than 120,000 copies of each issue can be sold (including subscriptions) and that the number of copies of the Canadian edition should not exceed twice the number of copies of the U.S. edition. The publisher can spend at most $8400 a month on postage and shipping. If profit is $200 per thousand copies on the U.S. edition and $150 per thousand copies on the Canadian, how many copies of each should be printed to maximize profit, and what will that profit be?
b) The table below shows the number of photocopies made by Kenyatta University students at three locations around campus according to level of study. Please study it and answer the questions that follow. Photocopying location Shopping Center Level of study Main Cybercafé Kiwanja Market First Year 130 300 190 Second Year 1160 250 150 Third Year 210 210 170 Fourth Year 230 210 240 i) Calculate the percentage of photocopies made by students at each level of study and at each location. ii) Calculate the probability that a randomly chosen photocopying was done by a fourth year student at Kiwanja Market. iii) Given that photocopying was done at the Main Cybercafé, what is the probability that it was done by a first year student?
Researchers studying the number of electric fish species living in various parts of the Amazon basin were interested in whether the presence of tributaries affected the local number of electric fish species in the main rivers (Fernandes et al. 2004) They counted the number of electric fish species above and below the entrance point of a major tributary at 12 different river locations. Here is what they found: Upstream number of Downstream number of species species Tributary Içá Jutaí Japurá Coari Purus 14 19 11 8. 18 5 10 16 Manacapuru 6 Negro 23 24 Madeira 29 Trombetas 19 16 Tapajós 16 25 20 Xingu Tocantins 21 10 12 What is the 95% confidence interval of the difference of means, ? Round your answers to two decimal places.
Company Competitor 1383 1153 2022 1067 2429 1296 901 1406 2219 1254 1896 1335 1910 1204 1539 1076 2048 1246 2881 1098 2395 1258 1349 955 2052 954 2675 1363 1588 1022 2704 1155 3148 1807 2822 1295 2217 1116 2260 1323 3040 1326 3137 1107 2977 1163 2599 1254 2412 1017 3187 938 2598 1270 2995 1042 3046 1318 3858 1497 2438 750 3243 1380 2764 1053 2944 932 3324 1097 2797 1193 3914 1271 2766 843 2273 780 3052 1095 3202 1290 3672 937 3957 1390 3274 1056 3788 1235 3502 1235 2942 999 3078 1066 3196 641 3141 1322 3579 1289 3895 1060 above is the excel data, please solve the excel part with formulas and explanation, thanks
Company A receives large shipments of microprocessors from Company B. It must try to ensure the proportion of microprocessors that are defective is small. Suppose Company A decides to test ten microprocessors out of a shipment of thousands of these microprocessors. Suppose that if at least one of the microprocessors is defective, the shipment is returned. Complete parts a through c. a. If Company B's shipment contains 12% defective microprocessors, calculate the probability the entire shipment will be returned. The probability is nothing. (Round to four decimal places as needed.) If Company B and Company A agree that Company B will not provide more than 5% defective chips, calculate the probability that the entire shipment will be returned even though only 5% are defective. The probability is (please show how you achieved answer).
Dispersion. I need an explanation on how to do these kinds of problems.
A research wants to determine if pre-natal exposure to the hormones in birth control pills alters the sex makeup of midshipman fish populations (which are typically half male and half female).Specifically, the researcher wishes to test the hypothesis that exposure to hormones will increase the number of females in the population.The researcher exposes a group of pregnant midshipman fish to birth control hormones and records the sex of the first 18 offspring birthed.They then observe that 10 are female.Use a sign test to test the indicated hypothesis.What is the value of "significance"
2. To determine if there is a difference in the average score per game in basketball for Division 1, 1. Due to the COVID-19 pandemic, many colleges are offering different types of courses: Face to Chapter 9 Review Homework: ace, Hybrid, Synchronous Online, and Asynchronous Online. Researchers were interested in determining if there is a difference in the overall course average for a Freshmen level College Algebra course for these different types of courses. It is believed that a student's overall success in previous courses could be a determining factor in how well they perform in the different types courses, thus the students were blocked based on GPA. The data is listed below. of GPA Course 3.50 & Above 3.49 - 3.00 2.99 2.50 2.49 - 2.00 1.99 & Below Face to Face 79.1 93 85.8 85.5 86 83.7 76.7 88.8 86.6 91.8 76.5 76.1 78.9 82.9 82.7 76.1 82.8 79.5 76.1 80.4 Hybrid Synchronous Online 85.2 74 71.9 83 79.5 73.3 78.9 80.6 82.4 79.3 74.5 Asynchronous 73.5 Online 69.3 81.5 84.1 89.9 82.4…
2. Consider the foot length and foot width of six fermale grade 4 students in Morning Star Montessori School in 2006: Length of foot (cm) Y 20.9 Width of foot (cm) X 8.5 24 9 19.6 7.9 22.6 8.8 21 8.8 21.6 9.3 For the next five items, refer to the problem above, in the previous page. In addition to the female grade 4 students, below are some of the boys measurements: Width of foot (cm) Length of foot (cm) Y 8.4 8.8 9.7 9.8 8.9 9.7 22.4 23.4 22.5 23.2 23.1 23.7 6. What is the standard deviation of the X values (s.)?
Jillian Michaels and Bob Harper are all- time famous American trainers. Michaels thinks that her clients lose more weight on average than the clients of Harper. Harper naturally disagrees with Michaels. In order to settle the dispute, the two trainers agree to each work with 15 different clients for six months. The table below summarizes the weight loss (Ibs) of each group: J. В. Michaels Harper Mean 25 21 SD 5.1 2.5 Size 15 15 1. Assume normality in the population distribution, construct a 90% confidence interval for the population difference of the mean weight loss using the critical value of 1.76 (Note: all values are given, no R codes needed) 2. What does it mean to be at "90% confident"? Would the 95% confidence interval be wider or narrower? Would the margin of error be wider or narrower? (Note: no calculation is needed) 3. According to the confidence interval you found in part (a), what can be concluded about Michaels' claim? (Note: you do NOT need to do the 5-step significance…
9. For a 3x2x3 a. How many factors are in this design? b. How many levels do we have for each factor? c. How many separate ANOVAS do we have to conduct?
David E. Brown is an expert in wildlife conservation. In his book The Wolf in the Southwest: The Making of an Endangered Species (University of Arizona Press), he records the following weights of adult grey wolves from two regions in Old Mexico. Chihuahua region: x1 variable in pounds 86 75 91 70 79 80 68 71 74 64 Durango region: x2 variable in pounds 68 72 79 68 77 89 62 55 68 68 59 63 66 58 54 71 59 67 (a) Use a calculator with mean and standard deviation keys to calculate x1, s1, x2, and s2. (Use 2 decimal places.) x1 s1 x2 s2 (b) Let μ1 be the mean weight of the population of all grey wolves in the Chihuahua region. Let μ2 be the mean weight of the population of all grey wolves in the Durango region. Find a 99% confidence interval for μ1 – μ2. (Use 2 decimal places.) lower limit upper limit

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