1. Refer to the Class Commute Data, and let the independent variable Distance (between home and s...
A study is being done to determine the average commute time (in minutes) of Sac State students. A random sample of 30 individuals was drawn, and their commute times are listed below: 24 28 31 29 54 28 27 38 24 14 46 38 31 16 21 11 21 15 30 29 17 23 27 18 29 44 19 35 34 38 Construct and interpret a 99% confidence interval for the average commute time of Sac State Students.
Read the scenario given below. With your group, examine the data set (on page 2) and decide what analysis should be done. Perform this analysis. Record your results and submit this file on Blackboard by the end of the day. Each student must submit a copy of their results. Scenario: Students are often late to class. This is distracting to both students and teachers, and is quite annoying. The school and instructors realize that some students have long commutes, but...
Refer to the accompanying data set and use the 25 home voltage measurements to construct a frequency distribution with five classes. Begin with a lower class limit of 124.7 volts, and use a class width of 0.2 volt. Does the result appear to have a normaldistribution? Why or why not? Complete the frequency distribution below. Voltage (volts) Frequency 124.7− − − − − Voltages measurements from a home Day Home (volts) 1 125.0 2 125.3 3 125.1 4 125.4 5 ...
Better Blooms is a florist shop which takes orders by internet and phone, prepares the desired floral arrangements, and delivers within a 25-mile radius of the shop. Since the profit margin on the business is small for each arrangement and the competition from other florists in the area is high, the owner is concerned about setting the appropriate costs for each delivery to be profitable while still being competitive. To investigate, the owner has gathered information on a random sample...
Travel Data 10. Using your travel data: a. Develop a 95% confidence interval for your mean time to work (lunch) using time in minutes. b. What assumption is necessary for you to complete part (a)? Do you feel this assumption is valid? 119 B C A 1 TO WORK Time in Day of Week Minutes 2 Date Ce 2-Sep Monday 3-Sep Tuesday 4-Sep Wednesday 5-Sep Thursday 6-Sep Friday 9-Sep Monday 10-Sep Tuesday 11-Sep Wednesday 12-Sep Thursday 13-Sep Friday 16-Sep Monday...
VII. Samples of 10 taken in 1985 and 1995 revealed the average time people Data set for those using statistics spend grocery shopping decreased from 18 minutes to 14 minutes. Respective standard deviations were 5 minutes and 4 minutes. Test at the .10 level of significance whether there has been a change in shopping time variability. software Shopping Time 1985 19 17 18 16 18 1995 10 17 20 16 13 18 15 14 23 28 18 VIII. Test at...
Voltage Measurements From a Home Home Home Home VO Home Full Day_(volts)_Day_(volts) Day_(volts) Day_(volts) data 1 126.9 8 126.8 15 127.2 22 127.5 set 2 126.6 9 126.6 16 127.3 23 1274 3 127.0 10 127.3 17 126.9 24 126.8 4 127.2 11 127. 18 26.8 25 127.0 5 127.4 12 127.5 19 126.7 6 126.7 13 127.0 20 1274 7 126.6 14 126.9 21 127.2 Refer to the accompanying data set and use the 25 home voltage measurements to...
1. Construct a frequency distribution for the following data. Use a first lower class limit of 10 and a class width of 5: 12, 14, 16, 13, 25, 30, 14, 24, 22, 16, 18, 11, 23, 27, 24, 17, 21, 18, 16 B. Frequency Frequency Interval 10-15 15-20 20-25 25 - 30 30-35 Interval 10 - 14 15-19 20-24 25-29 30 - 34 5 Frequency Interval Frequency 5 - 145 15-24 11 - 25-34 3 Interval 10-14 15-19 20 -...
An industrial designer wants to determine the average amount of time it takes an adult to assemble an “easy to assemble” toy 10 points Save Answer QUESTION 4 An industrial designer wants to determine the average amount of time it takes an adult to assemble an "easy-to-assemble” toy. Use the following data (in minutes), a random sample, to construct a 95% confidence interval for the mean of the population sampled: 17 26 16 13 23 10 18 24 20 19...
1. The operating characteristics of zinc-bromine batteries are partially dependent on the vapour pressure of the bromide compound, which is itself dependent on the temperature at which the battery operates. (a) In the data file RegressionTutorial.xlsx there are data of measurements of vapour pressure and the corresponding operating temperatures. Copy the data into Minitab and run a regression analysis. 1 mark for output (b) First perform an hypothesis test to see if there is a significant connection between the response...