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You would like to know how effective a diet program is at helping people lose weight. 18 over-weight people are randomly selected to participate in the program. They are weighed before and after the program and the results are listed below. Do these results give evidence that the diet program is effective at the 1% significance level?
Participant 1 2 3 4 5 6
Before 185 220 190 158 227 211
After 175 215 195 155 230 207
Participant 7 8 9 10 11 12
Before 260 158 201 300 180 270
After 258 159 201 300 172 272
Participant 13 14 15 16 17 18
Before 293 183 205 151 291 166
After 290 185 200 146 287 166
Using a significance level of .01 to test this hypothesis, what is your decision rule?
You flip a coin three times. (a) What is the probability of getting heads on only one of your flips? (b) What is the probability of getting heads on at least one flip?
Calvin and Hobbes play a match consisting of a series of games, where Calvin has probability p of winning each game (independently).
at a certain university the average attendance at basketball games has been 2825. this year the attendance for the
The first two are played at one team's home ballpark, the next three at the other team's park, and the final two (if needed) are played back at the first park.
Create an appropriate graph of these data.- Do these data indicate that driving near home is particularly dangerous? Explain.
In a study of 368 San Francisco Bay Area nonprofits, 224 reported that they are collaborating with other organizations to provide services, a necessity as nonprofit agencies are called upon to do more with less.
a statistics professor has asked his students to flip coins over the years. he has kept track of how many flips land
A survey of undergraduate students in the School of Business at Northern University revealed the following regarding the gender and majors of the students:
STA101 - Statistics for Business. A basketball player has the following points for seven games: 20, 25, 32, 18, 19, 22, and 30. Compute the following measures: a) Compute the sample mean (the average of the points of each game) Compute the variance a..
Compute the appropriate test statistic to test Ho: p = 80/100 vs. Ha: p > 80/100.
a sample of 100 msnbc viewers shows an average household income of 119 k and a standard deviation of 30k.a. what would
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