Question: Test for normality at the 1% level using a sample of n = 79 (rounded) values x (tensile strength [kg/mm 2 ] of steel sheets

Test for normality at the 1% level using a sample of n = 79 (rounded) values x (tensile strength [kg/mm²] of steel sheets of 0.3 mm thickness). a = a(x) = absolute frequency. (Take the first two values together, also the last three, to get K = 5.)

X a 57 58 4 10 59 17 60 61 62 63

X a 57 58 4 10 59 17 60 61 62 63 9 3 27 8 64 1

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