Efficient manufacturing: Efficiency experts study the processes used to manufacture items in order to make them asefficient as possible. One of the steps used to manufacture a metal clamp involves the drilling of three holes. In a sample of60 clamps, the mean time to complete this step was 45.5 seconds. Assume that the population standard deviation is 7seconds. Round the critical value to no less than three decimal places.Part: 0 / 2Part 1 of 2(a) Construct an 80% confidence interval for the mean time needed to complete this step. Round the answer to atleast one decimal place.An 80% confidence interval for the mean is <µ<Part: 1 / 2Part 2 of 2XŚ(b) Find the sample size needed so that a 99.5% confidence interval will have margin of error of 1.5.A sample size of is needed in order to obtain a 99.5% confidence interval with amargin error of 1.5. Round the sample size up to the nearest integer.X3=

Answered: Efficient manufacturing: Efficiency…

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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question 20 The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 71 minutes and a standard deviation of 16 minutes. Suppose one person at the hot springs is randomly chosen. Let X = the amount of time that person spent at Grover Hot Springs . Round all answers to 5 decimal places where possible. c. The park service is considering offering a discount for the 8% of their patrons who spend the least time at the hot springs. What is the longest amount of time a patron can spend at the hot springs and still receive the discount ? minutes.d. Find the Inter Quartile Range (IQR) for time spent at the hot springs.Q1: minutesQ3: minutesIQR: minutes
Question 11
Question 10 く Suppose that we are studying the amount of time customers wait in line at the checkout at the Gap and Old Navy. The avérage wait time at both stores is five minutes. At the Gap, the standard deviation for the wait time is 2 minutes; at Old Navy the standard deviation for the wait time is 5 minutes. Because Old Navy has a higher standard deviation, we know that there is Select an answer v in the wait times at Old Navy. Overall, wait times at Old Navy are Select an answer v from the average; wait times at the Gap are Select an answer v near the average.
1.
Question 5 A particular fruit's weights are normally distributed, with a mean of 695 grams and a standard deviation of 12 grams. If you pick 25 fruits at random, then 15% of the time, their mean weight will be greater than how many grams? Give your answer to the nearest gram. Ouestion 5 etv 80 888 DII F3 F4 FS F6 F7 F8 @ # 2$ & 1 2 3 339 NEA LA Cippers
Question 36 An honor society on campus only accepts the top 13% of students (according to GPA). If the GPAS of all students on campus are known to be a normally distributed with a mean of 2.99 and a standard deviation of 0.45, determine the minimum GPA a student must achieve in order to be admitted to the honor society. Round the solution to two decimal places, if necessary. A minimum GPA of is required for admission to the honor society.
Question 19 Provide an appropriate response. A radio station claims that the amount of advertising per hour of broadcast time has an average of 13 minutes and a standard deviation equal to 2.3 minutes. You listen to the radio station for 1 hour, at a randomly selected time, and carefully observe that the amount of advertising time is equal to 11 minutes. Calculate the z-score for this amount of advertising time. O z= 0.67 O z= -0.67 z= 0.87 O z= -0.87 A Click Submit to complete this assessment. < Question 19 of 19 Save and Submit 5:33 PM arch 3/25/2021 PrtScn Home 19 End VI0 PgUp PoDn K
stion Completion Status: 14.50 QUESTION 5 Use the given stem-and-leaf display to find the 51th percentile.p 0789 10 456 213457 335 68 41 23 4 8 37999 6 0 135 3 4 4 5 8257 8 90 1 DOLL Click Save and Submit to save and submit. Click Save All Auswes to e l a
Question 3 Todd wants to estimate a population mean age of the incoming fall term transfer students. Based on previous evidence, he believes the population standard deviation is approximately o = 7.5 years. Todd would Like to be 90% confident that his estimate is within 1.8 years of the true population mean, and asks you to help him determine the appropriate minimum sample size. How large of a sample size should Todd use? people
Question 1 A pediatric nurse is researching weight gain in premature babies. Previous research has indicated that premature babies gain a mean of 150 grams per month (assume σ = 22.3) . The nurse is researching a new program that has the goal of increasing the mean weight gain in a month. The nurse takes a random sample of 40 premature babies to participate in the program over the next month with a resulting sample mean weight gain of 160 grams per month. What is the value of the test statistic? A. -0.45 B. 2.84 C. 0.45 D. -2.84 Question 2 A pediatric nurse is researching weight gain in premature babies. Previous research has indicated that premature babies gain a mean of 150 grams per month (assume σ = 22.3) . The nurse is researching a new program that has the goal of increasing the mean weight gain in a month. The nurse takes a random sample of 40 premature babies to participate in the program over the next month with a resulting sample mean weight…
Question Number (4)
Question 3 of 14 (12 points) Attempt 1 of 3 View question in a popup 6.3 Section Exercise 15 (ca Coffee: The National Coffee Association reported that 64% of U.S. adults drink coffee daily. A random sample of 225 U.S. adults is selected. Round your answers to at least four decimal places as needed. Part: 0/ 6 民 Part 1 of 6 (a) Find the mean A. The mean lln is ola

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