The Manager at Peon's Furniture store wants to determine the how long customershave to wait in line to get in the store, during the huge Tent Sale Inventory Blow OutSale. They want this estimation to have a margin of 4.6 minutes. Peon's Furniture hasdata that suggests a standard deviation in wait times for the sale is 1.2 minutes.With a 95% confidence, what minimum sample size should Peon's use?(Remember your units)

Answered: The Manager at Peon's Furniture store…

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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Please tapy answer The director of admission at a large university advises parents of incoming students about the cost of textbooks during a typical semester. He selected a sample of 100 students and recorded their textbook expenses for the semester. He then computed a sample mean cost of 3,154 pesos with a standard deviation of 430 pesos. Is there an evidence that the population mean is above 3,000 pesos?
Solve the problem and draw the normal curve with the shaded region representing the given scenario in the problem. Explicitly write your solution and state & highlight your final answer at the end. You have just received your score in a mathematics aptitude test. Given your score was 82 and the mean score on the test was 73 with a standard deviation of 5. Assume that the test scores are normally distributed. a. Find the median and the mode, and compare it with the given mean value. b. Determine the intervals within 1, 2 and 3 standard deviations from the mean, that is, the µ ± 10, µ ± 20, μ ± 30.
i need the second part of the question
Please see the picture below. None of the answers I've tried is coming back right. I just need help with the items in the red boxes.
ANSWER IN T-DISTRIBUTION. A group of mathematics teachers wants to estimate the average computational skills of the students in senior high school. the standard deviation from the previous study is 5. how large must the sample be selected if they want to have 95% confidence of finding whether the true mean differs from the sample mean by 3.
The distribution of heights in a population of women is approximately normal. Sixteen percent of the women have heights less than 62 inches. About 97.5% of the women have heights less than 71 inches. Use the empirical rule to estimate the mean and standard deviation of the heights in this population. Mean: K inches Standard Deviation: inches
After the pandemic hit and people were forced to spend more time indoors, there have been a suspicion among health professionals. that people are eating more and thus gaining weight. In 2018, the average weight of 192 pounds, and health experts want to know if that average weight of the American male has gone up during this pandemic. d. A sample of 50 American males yeilded a sample average weight of 195 pounds and a sample standard deviation of 14.5 pounds. What is your conclusion at the 5% level of significance? (be sure to state your conclusion in the context of this problem) e. Would your conclusion change if the level of significance were changed to 1%? Briefly explain.
This assignment is worth 1 points. The extra point will be added to your overall course grade. For example: if you receive an 88% in the course you can receive up to 1 point giving you a new score of 89%. The following rubric will be used. 0.25 point for drawing the normal distribution curve with the mean value labeled on the curve and the appropriate area shaded. 0.25 point for determining the value of the standard deviation of the sample mean. 0.5 point for finding the correct probability. All work must be shown in order to receive any credit. Please upload your completed assignment here. The length of time taken on the SAT for a group of students is normally distributed with a mean of 2.5 hours and a standard deviation of 0.25 hours. A sample size of n = 60 is drawn randomly from the population. Find the probability that the sample mean is between two hours and three hours.
Cereals sodium values have a mean of 167 and a standard deviation of 77.3. Find the z-score for the cereal that has a sodium value of 0. How would you interpret this z-score?
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Identify the parameter(s). Whether or not a person consumes alcohol. The population mean amount of alcohol consumed by each person per year. all individuals who consume alcohol. The population proportion of those who consume alcohol. info: The average American consumes 100 liters of alcohol per year. Does the average college student consume less alcohol per year? A researcher surveyed 13 randomly selected college students and found that they averaged 85.7 liters of alcohol consumed per year with a standard deviation of 21 liters.
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