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Daily high temperature in the city of Houston for the last week has been: 93,94,93,95,92,86,98 (Yesterday).
(a) Forecast the high temperature today using a 3-day moving average.
(b) Forecast the high temperature today using a 2-days moving average.
(c) Calculate the mean absolute deviation based on the 2-day moving average. You can have a forecast and an actual temperature.
Compute the variance and standard deviation of the number that will arrive within two days.
The ideal number of children. "What do you think is the ideal number of children for a family to have?" A Gallup Poll asked this question of 1016 arbitrarily chosen adults. Almost half (49%) thought two children was idea suppose that p = 0.49 is e..
A check of dorm rooms on a large college campuses revealed that 38% had refrigerators, 52 percent had TVs and 21 percent had both a TV and a refrigerator. What's the probability that a randomly selected dorm room has.
Is it reasonable to conclude that this set of n = 16 people is not a representative random sample of registered voters?
Which combination of factors has greatest likelihood of rejecting null hypothesis?
At the .05 significance level, is the number of units produced on the afternoon shift larger?
A bank wants to get new customers for their credit card. They try two different approaches in their marketing campaign. The first promises a "cash back" reward; the second promises low interest rates. A sample of 500 people are mailed the first br..
Develop a linear regression model for these data and forecast carpet sales if 30 construction permits for new homes are filed.
Make a decision regarding the null hypothesis based on the sample information. Interpret the results of the test and state your conclusion.
The null hypothesis is that there was no change in average liquor consumption. State this formally in terms of µ.
By using a level of significance of .10, is there evidence that the population mean weight of the candy bars is greater than 4.3?
Use a 0.05 significance level to test the claim that king-size cigarettes with filters have a lower mean amount of nicotine than the mean amount of nicotine in non-filtered king-size cigarettes.
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