Mathematics, 01.07.2019 09:00 faithiemusic8821

Hello, do you think i did it right?

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Mathematics, 22.06.2019 05:10

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Mathematics, 22.06.2019 07:00

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Mathematics, 22.06.2019 07:30

Julia's text messaging plan charges 5? for each message over 650 in addition to a $8 base charge. if she owes $13.85 for text messaging in the month of september, how many text messages did she send that month?

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Mathematics, 22.06.2019 08:10

Studies show that massage therapy has a variety of health benefits and it is not too expensive. a sample of 12 typical one-hour massage therapy sessions showed an average charge of $58. the population standard deviation for a one-hour session is =$5.55. a. what assumptions about the population should we be willing to make if a margin of error is desired? (select your the population has uniform distribution/ the population is at least approximately normal is required/ the population has no exponential distribution/ no assumptions should be made) b. using 90% confidence, what is the margin of error (to 2 decimals) c. using 99% confidence, what is the margin of error (to 2 decimals)