Mathematics, 31.10.2019 06:31, amanda289
Asurvey conducted by the american automobile association showed that a family of four spends an average of $215.60 per day while on vacation. suppose a sample of 64 families of four vacationing at niagara falls resulted in a sample mean of $252.45 per day and a sample standard deviation of $77.50.
a. develop a 95% confidence interval estimate of the mean amount spent per day by a family of four visiting niagara falls (to 2 decimals). ( , )
b. based on the confidence interval from part (a), does it appear that the population mean amount spent per day by families visiting niagara falls differs from the mean reported by the american automobile association?
Answers: 3
Mathematics, 21.06.2019 16:20, bestballer7095
Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais
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Mathematics, 21.06.2019 19:00, DestyHilBan1183
What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2
Answers: 2
Asurvey conducted by the american automobile association showed that a family of four spends an aver...
Physics, 21.06.2021 16:20