«The financial officer of an electronics goods company which sells TVs, sound systems, DVDs, VCRS etc., knows from past experiences that 23% ofthe store's customers pay cash for their purchases, 35% issue cheques, and the remaining 42% use credit cards. He wants to confirm that this isstill the payment method for electronic purchases. Based on a random sample of 200 recent sales receipts, the breakdown of payment methods inthe following table was constructed. See below. The critical value at the 5% significance level (rounded off to two decimals) is:Customers PercentagesOA. 3.84B. 5.99OC. 14.89OD. 7.82Reset Selection16f7PaymentfgMethodCashChequeCredit Card 110TotalsHOLDF200hpfioa23%42%100%farExpectedFrequency7084A15.16202240/7

Test is that whether the breakdown of payment methods is still same. It is given that Number of…

Answered: The financial officer of an electronics…

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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The data given below were taken from a study about the preferred payment methods according to age. The table below indicates the numbers of people in the study according to their age (18 - 45, 46+) and their preferred payment method (Cash, Credit Card). Cash Credit Card 18 – 45 45 65 - 46+ 55 35 Among the people who are in the age group "18 - 45", what is the percentage of the people who prefer the "Credit Card" payment method? Select one: a. 35.00 % b. 65.00 % С. 45.00 % d. 61.11 % е. 59:09 %
Describe what statistical tools, methods, and sampling techniques are used in preparing a Company's Cash flow statements?
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PLZ WILL LEAVE LIKE Mortgage rates: Following are interest rates (annual percentage rates) for a 30 - year fixed ratemortgage from a sample of lenders in Macon, Georgia, on June 20, 2013. Assume that the population is approximatelynormal. \table[[4.488, 4.195, 4.444, 4.903, 4.685, 4.262), [4.175, 3.514, 4.135, 4.242, 4.805, 4.35]] Part: 0/ 3 Part 1 of 3 (a) Find the samplestandard deviation s. Round the answer to at least four decimal places. The sample standard deviation s is Part: Part 2of 3 (b) Construct a 95% confidence interval for the population standard deviation o. Round the answers to at least twodecimal places. A 95% confidence interval for the population standard deviation is, <σ< Part 3 Based on the confidenceinterval, is it reasonable to believe that the population standard deviation is greater than .10? THANK U WILL LIKE
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For a large supermarket chain in Florida, a woman's group claimed that female employees were passed over for management training in favor of their male colleagues. State wide, the large pool of more than 1000 eligible employees Who can be tapped for management training is 40% for female. Since this program begin, 12 of the 40 employees chosen for management training were female. -check the three conditions and assumptions. please show calculations
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“SmartB” owns a phone battery assembly line which provide phone battery to a mobile company. It is known that 4% of the batteries produced by “SmartB” are defective. A random sample of 28 phone batteries is selected from the assembly line and will be sent for inspection. d). The production cost of a phone battery is $100 and the selling price to the mobile company is $500. When the phone battery is found defective within a year, it could be sent back for repairment, which costs “SmartB” $70. Suppose all defective phone battery would be reported by the customer within a year and would be sent back for repairment. Present the probability distribution function of the profit gained by “SmartB” from a phone battery. (Remark: Profit = revenue – cost) e). Calculate the expectation, variance, and standard deviation of the profit gained by “SmartB” from a phone battery.
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) Consider the following figures showing the situation of the Australian labourmarket in 2018 (figures are per thousand and in percentage).Employed persons ('000) 12 620.7Unemployed persons ('000) 711.9Unemployment rate (%) 5.4Participation rate (%) 65.6a. What is the labour force participation rate? Briefly checking some online sources is it lower or higherthan in other countries? Try to provide some explanation for the difference.b. Assume that the participation rate in Australia changes to 63%, but the adult population and the numberof employed remain unchanged (hint: if the adult population is not reported, you can calculate it easilyfrom the labour force and participation rate). What would be the labour force, the number ofunemployed, and the unemployment rate?c. Go to the latest LFS by the ABS at: www.abs.gov.au/ausstats/abs@.nsf/mf/6202.0. How does the currentsituation compare with 2018? Spend about 10 minutes going through the website and report at least oneobservation you find…
“SmartB” owns a phone battery assembly line which provide phone battery to a mobile company. It is known that 4% of the batteries produced by “SmartB” are defective. A random sample of 28 phone batteries is selected from the assembly line and will be sent for inspection. (d) The production cost of a phone battery is $100 and the selling price to the mobile company is $500.When the phone battery is found defective within a year, it could be sent back for repairment, which costs“SmartB” $70. Suppose all defective phone battery would be reported by the customer within a yearand would be sent back for repairment. Present the probability distribution function of the profit gainedby “SmartB” from a phone battery. (Remark: Profit = revenue – cost)

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