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MATH 221 Week 6 Quiz 1 | Devry UniversityWeek 6: Quiz Question 1 (CO 5) A company claims that its heaters last at most 5 years. Write the null and alternative hypotheses and note which is the claim. · Ho: μ = 5 (claim), Ha: μ ≥ 5 · Ho: μ = 5 (claim), Ha: μ > 5 · Ho: μ = 5, Ha: μ > 5 (claim) · Ho: μ > 5 (claim), Ha: μ ≤ 5 Question 2 (CO 5) An executive claims that her employees spend no more than 2.5

Mathematics Assignment Help / statistics Devry University / MATH 221 20 Jan 2022

MATH 221 Week 6 Discussion |Devry UniversityA random sample of 100 medical school applicants at a university has a mean total score of 502 on the MCAT. According to a report, the mean total score for the school’s applicants is more than 499. Assume the population standard deviation is 10.6. Answer the following questions:What would the null and alternate hypotheses be? Which one would be the claim?What kind of test is this, left tailed, right

Mathematics Assignment Help / statistics Devry University / MATH 221 20 Jan 2022

MATH 221 Week 5 Quiz 2 | Devry UniversityQuestion 1(CO 4) From a random sample of 55 businesses, it is found that the mean time that employees spend on personal issues each week is 5.8 hours with a standard deviation of 0.35 hours. What is the 95% confidence interval for the amount of time spent on personal issues? · (5.71, 5.89) · (5.73, 5.87) · (5.74, 5.90) · (5.72, 5.88)Question 2(CO 4) If a confidence interval is given from 8.52 to

Mathematics Assignment Help / statistics Devry University / MATH 221 20 Jan 2022

MATH 221 Week 5 Quiz 1 | Devry University Question 1 From a random sample of 58 businesses, it is found that the mean time the owner spends on administrative issues each week is 21.69 with a population standard deviation of 3.54. What is the 95% confidence interval for the amount of time spent on administrative issues? 5VA. Confidence intervals with population standard deviation (Links to an external site.) (1:42) 5DA. Concept an

Mathematics Assignment Help / statistics Devry University / MATH 221 20 Jan 2022

MATH 221 Week 5 Discussion |Devry University1. Look in the newspapers, magazines, or other news sources for results of a survey or poll that show the confidence interval, usually as a +/- amount. Describe the survey or poll and then describe the interval shown. How does knowing the interval, rather than just the main result impact your view of the results?2. Calculate the 90% and 95% confidence intervals of the following data set assuming t

Mathematics Assignment Help / statistics Devry University / MATH 221 20 Jan 2022

MATH 221 Week 4 Quiz 2 | Devry University Question 1 (CO 3) The speed of cars on a stretch of road is normally distributed with an average 48 miles per hour with a standard deviation of 5.9 miles per hour. What is the probability that a randomly selected car is violating the speed limit of 50 miles per hour? · 0.21 · 0.48 · 0.63 · 0.37 Question 2 (CO 3) A survey indicates that shoppers spend an average of 2

Mathematics Assignment Help / statistics Devry University / MATH 221 20 Jan 2022

MATH 221 Week 4 Quiz 1 | Devry UniversityWeek 4: Homework Question 1 The length of time a person takes to decide which shoes to purchase is normally distributed with a mean of 8.54 minutes and a standard deviation of 1.91. Find the probability that a randomly selected individual will take less than 5 minutes to select a shoe purchase. Is this outcome unusual? Homework Help: 4VA. Calculating normal probabilities (Links to an exter

Mathematics Assignment Help / statistics Devry University / MATH 221 20 Jan 2022

MATH 221 Week 4 Discussion |Devry University1.Using these 20 data points from a normal distribution, find their μ and σ. Then find P(x<20). Compare that probability with the percent of the 20 data points that are below 20.22.1 30.9 18.6 34.7 15.3 37.1 40.8 33.9 40.8 18.1 15.1 32.6 30.3 28.3 28.3 23.1 28.4 20.7 25.1 22.12.Using these 20 data points from a normal distribution, find their μ and σ. Then find P(20<x<35). Compare th

Mathematics Assignment Help / statistics Devry University / MATH 221 20 Jan 2022

MATH 221 Week 3 Quiz 2 | Devry University Question 1 (CO 3) Consider the following table: Age Group Frequency 18-29 983 30-39 784 40-49 686 50-59 632 60-69 541 70 and over 527 If you created the probability distribution for these data, what would be the probability of 40-49? · 0.189 · 0.425 · 0.165 · 0.237 Question 2 (CO 3) Consider the following table of hours worked by part-time empl

Mathematics Assignment Help / statistics Devry University / MATH 221 20 Jan 2022

MATH 221 Week 3 Quiz | Devry UniversityWeek 3: Homework Question 1 Let x represent the number of pets in pet stores. This would be considered what type of variable: 3DA. Discrete versus continuous variables (Links to an external site.) (DOCX) · Continuous · Discrete · Lagging · Nonsensical Question 2 Let x represent sheets of paper in a package. This would be considered what type of variable: 3DA. D

Mathematics Assignment Help / statistics Devry University / MATH 221 20 Jan 2022