what is the standard unit used to measure mass?​

sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis using the 0.025 significance level. H0: 220 H1: < 220 Is this a one- or two-tailed test? One-tailed test Two-tailed test below are three reactions showing how chlorine from CFCs (chlorofluorocarbons) destroy ozone (O3) in the stratosphere. Ozone blocks harmful ultraviolet radiation from reaching earths surface. Show how these 3 equations sum to produce the net equation for the decomposition of two moles of ozone to make three moles of diatomic oxygen (2 O3 3 O2), and calculate the enthalpy change. (6 points) R1 O2 (g) 2 O (g) H1= 449.2 kJ R2 O3 (g) + Cl (g) O2 (g) + ClO (g) H2 = -126 kJ R3 ClO (g) + O (g) O2 (g) + Cl (g) H3= -268 kJ Scarlett Squirrel teaches a hula dancing class to young squirrels. 141414 squirrels showed up to class on Monday, 101010 squirrels on Tuesday, 888 squirrels on Wednesday, 101010 squirrels on Thursday, and 121212 squirrels on Friday. Find the mean number of the squirrels The perimeter of a rectangle is 141 feet, and the length is twice the width. What are the dimensions ? 7 - 5x > 3x + 31A.X2-3 (all numbers greater than or equal to -3 will satisfy the inequality)B.xs-3 (all numbers less than or equal to -3 will satisfy the inequality)C.X26 (all numbers greater than or equal to 6 will satisfy the inequality)D.xs 6 (all numbers less than or equal to 6 will satisfy the inequality) Need help with these last two questions, tysm if you do :D What is 0.09% written as a decimal?A. 0.9B. 0.009C. 0.0009D. 0.09 Find all of the angle measures in the image. If the Fed increases the discount rate, which of the following accurately describes the system, finally leading to a decline in money supply? A. Excess reserves j: Reserves: Coans J: Deposits : Money supply B. Reserves J: Excess reserves J: Loans J: Deposits ;Money supply C LoansJ:DepositsJ:Reserves J:Excess reserves |: Money supply D. Deposits J: ReservesJ:Excess reservesI:Loans J:Money'supply Which change can be made to correct the chart?The expression 3x3 should be 3x2.The expression 6x should be 6xy.The expression x2y should be x2y2.The expression 4y should be 4y2. factors for rise of long distance trade A stock has a beta of 1.28, the expected return on the market is 12%, and the risk-free rate is 4.5%. Using the CAPM, what is the expected return on this stock Bryce is picking out a new lamp at a furniture store. There are 5 kinds of lamp bases and3 different lampshades. Each lampshade comes in 3 different colors. Bryce also needs tochoose one of the 2 kinds of lightbulbs available. How many different lamps can Bryce choose? 11. How did the solubility product constant Ksp of KHT in pure water compare to its solubility product constant Ksp of KHT in KCl solution? Are these results what you would expect? Why? Please help i will mark brainliest for correct answers! what is standard deviation in maths Collectivist-inclined totalitarian states tend to enact laws that severely restrict private enterprises, while laws enacted by governments in democratic states, where individualism is the dominant political philosophy, tend to be pro-private enterprise and pro-consumer. This indicates that the Thank you for the help!! Grade 7 : Civics chapter : 3 - Understanding Media Write a short note on : The impact of Advertising The Right to Information Act 2005 Plz do answer and I'll mark as brainliest if I'm satisfied with the answer : ) How many hydrogen atoms are there in the following compound: 4CHA (2 points)Select one:a 4b. 8c. 12d. 16