Mathematics, 30.11.2019 05:31 KingKayyy2322
The average us woman wears 515 chemicals on an average day from her makeup and toiletries. a random sample from california found that on average the california woman wears 325 chemicals per day with a standard deviation of 90.5.which hypothesis test should be used to determine whether the sample contains less than the us average of wearing 515 chemicals per day? a. t-test for the population meanb. z-test for the population meanc. z-test for the population proportiond. t-test for the population proportion
Answers: 3
Mathematics, 21.06.2019 21:00, kitttimothy55
Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out
Answers: 2
Mathematics, 22.06.2019 05:30, lllmmmaaaooo
Jonathas wants to get a cell phone. the phone costs $59 and the plan costs $39 per month.
Answers: 2
The average us woman wears 515 chemicals on an average day from her makeup and toiletries. a random...
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