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Problem 1)
B
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A marketing specialist is assessing the effectiveness of two types of formats for TV commercials. Twenty four regular TV watchers are randomly selected and then assigned to watch one of the two formats of a commercial for an imported car. The following data are the scores on a measure for assessing the impact of commercials.
For the data above, test the appropriate hypothesis using the independent t test and alpha=.05.
a) State the hypotheses
b) Set the criterion for rejecting H0
c) Compute the test statistic
d) Interpret the results
e) Show that t^2=F and Tcv^2=Fcv
Problem 2)
Solve the following problem by showing your work.
The following shows the impact of three different types of Head Start Program for young children on three randomly selected groups. Analyze if group difference is significant enough using ANOVA.
1st Program
2nd Program
3rd Program
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19
42
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36
18
48
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he probability is 1 in 4000000 that a single auto trip in the united states will result in a fatality. over a lifetime
An educational study uses a simple pre-post design to assess the efficacy of a computer tutor for solving inequalities. Twelve pilot students participate. Each student is given a pre-test, then participates in six sessions using the tutor, then i..
At the .01 significance level, is there a relationship between job pressure and age?
A veterinary nutritionist developed a diet for overweight dogs. The total volume of food consumed remains the same, but one-half of the dog food is replaced with a low-calorie "filler" such as canned green beans.
A -0.947 correlation coefficient has been found between two variables after examining 43 pairs of observations. What can be concluded?
about 6 of the population has a particular genetic mutation. 600 people are randomly selected.find the standard
The concessions manager at the Clemson vs. USC football game must decide whether to have the vendors sell sun visors or umbrellas. There is a 30% chance of rain
Test hypothesis that calories of two populations are equal. Illustrate all steps of the hypothesis testing process. Points will be deducted for missing parts.
A single test on a certain device costs more than the entire lot. It is therefore decreed that not more than three tests will be performed per lot.
a. Define variables that would tell how many units to purchase from each source. b. Develop an objective function that would minimize the total cost.
a researcher wanted to investigate whether there was a difference in satisfaction ratings in an assisted living
the prevalence of tuberculosis in cows is known to be 6. in a randomly chosen sample of 100 cows from a herd of 5000
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