if a random variable X is normally distributed , then what is the probability that a randomly selected value for X is between 1.5 and 2.5 standard deviations away from it's mean value

idk

step-by-step explanation: i just don't

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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just pick what you think i need more time let me know if this

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