Mathematics, 05.12.2019 17:31 danny4577
Casey fitch is writing a report for a statistics class. he is investigating whether the mean price for a gallon of regular gasoline at stations of brand a are currently higher than the mean price for a gallon of regular gasoline at stations of brand b in the region. casey randomly selects 37 service stations of brand a and 35 service stations of brand b and records the price for a gallon of regular gasoline. the sample mean price for brand a is $2.836 with a sample standard deviation of $0.083, while brand b has a sample mean price of $2.798 with a standard deviation of $0.049. let μ1 be the population mean price for a gallon of regular gasoline at brand a and μ2 be the population mean price for a gallon of regular gasoline at brand b. casey uses the alternative hypothesis ha: μ1−μ2> 0. he assumes that the population standard deviations of the two groups are not equal, so uses 34 degrees of freedom. if the t-test statistic is t≈2.38, what is the p-value for this hypothesis test?
Answers: 3
Mathematics, 21.06.2019 20:00
Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?
Answers: 2
Mathematics, 21.06.2019 20:30
Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.
Answers: 3
Casey fitch is writing a report for a statistics class. he is investigating whether the mean price f...
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