For a random sample of 46 University of Maryland undergraduate students, the mean amount of sleep last night equal 6.8 hours with a standard deviation of 1.3 hours. What would the boundaries for a 99% confidence interval to estimate the mean amount of sleep last night for all UMD undergraduate students equal

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

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also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt

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step-by-step explanation: