Question

A nationwide study a few years ago showed that American women, ages 19-30, consume an average of 110 milligrams of caffeine per day. Recently a group of Stats students decided to test whether the average was more than that now. They obtained a random sample of 25 American women, ages 19-30, whose average daily consumption was 115 milligrams of caffeine per day. The standard deviation was s = 14, and a histogram was unimodal and nearly symmetric with no outliers. Perform a hypothesis test using 0.05 as the significance level. Check conditions after writing your hypotheses, show all calculations, and interpret your results in context at the end.

Please help me with the conditions also. Thanks

Answer #1

A nationwide study a few years ago showed that American women,
ages 19-30, consume an average of 110 milligrams of caffeine per
day. Recently a group of Stats students decided to test whether the
average was more than that now. They obtained a random sample of 25
American women, ages 19-30, whose average daily consumption was 115
milligrams of caffeine per day. The standard deviation was s = 14,
and a histogram was unimodal and nearly symmetric with no outliers....

A nationwide study a few years ago showed that American women,
ages 19-30, consume an average of 110 milligrams of caffeine per
day. Recently a group of Stats students decided to test whether the
average was more than that now. They obtained a random sample of 25
American women, ages 19-30, whose average daily consumption was 115
milligrams of caffeine per day. The standard deviation was s = 14,
and a histogram was unimodal and nearly symmetric with no outliers....

A nationwide study a few years ago showed that American women,
ages 19-30, consume an average of 110 milligrams of caffeine per
day. Recently a group of Stats students decided to test whether the
average was more than that now. They obtained a random sample of 25
American women, ages 19-30, whose average daily consumption was 115
milligrams of caffeine per day. The standard deviation was s = 14,
and a histogram was unimodal and nearly symmetric with no outliers....

20 women and 30 men between 18 to 60 years old and the
number of hours that they work. These information would be your
populations. For each group find the followings:
20 Women Ages = 19, 23, 40, 18, 60, 50, 21, 30, 33, 28,
33, 35, 28, 24, 28, 18, 19, 22, 25, 50
20 women work hours weekly = 40, 24, 30, 31, 19, 10, 21,
5, 40, 9, 8, 40, 37, 12, 20, 40, 20, 10, 40,...

Delta airlines case study
Global strategy. Describe the current global
strategy and provide evidence about how the firms resources
incompetencies support the given pressures regarding costs and
local responsiveness. Describe entry modes have they usually used,
and whether they are appropriate for the given strategy. Any key
issues in their global strategy?
casestudy:
Atlanta, June 17, 2014. Sea of Delta employees and their
families swarmed between food trucks, amusement park booths, and
entertainment venues that were scattered throughout what would...

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