Mathematics, 06.05.2020 06:03, hannah2757
My favorite pizza restaurant advertises that their average delivery time is 20 minutes. It always feels like it takes forever for my pizza to arrive, so I don't believe this is true. I start recording how long it takes for my pizza order to be delivered and I ask a few of my friends to help out too). Of the 50 pizza deliveries we record, the average delivery time is 20.7 minutes with a standard deviation of 2.1 minutes. Conduct an appropriate hypothesis test at the a = 0.05 level to determine if the advertised delivery time is overly optimistic. Population parameter(s): Sample statistics: Hypotheses: Test Statistic: p-value: Reject H? Conclusion (in context of the problem): In the pizza problem above, you should have found that the difference between the advertised average delivery time and the actual average delivery time was statistically significant. Is this difference practically significant? Explain. Make a 99% confidence interval for the average delivery time. Based on this interval, would we reject the null hypothesis? Does this agree with the hypothesis test you performed above? Why or why not? Explain.
Answers: 1
Mathematics, 21.06.2019 16:40, jsmith4184
Ajar contains a mixture of 20 black marbles, 16 red marbles, and 4 white marbles, all the same size. find the probability of drawing a white or red marble on the first draw. 125 12 01 next question ask for turn it in
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Mathematics, 21.06.2019 18:00, heids17043
Ageologist had two rocks on a scale that weighed 4.6 kilograms together. rock a was 0.5 of the total weight. how much did rock a weigh?
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Mathematics, 21.06.2019 18:00, safi30360oz0c34
Based on the graph, what is the initial value of the linear relationship? a coordinate plane is shown. a line passes through the y-axis at -2 and the x-axis at 3.
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Mathematics, 21.06.2019 19:30, markel19
The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)
Answers: 3
My favorite pizza restaurant advertises that their average delivery time is 20 minutes. It always fe...
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