Question

I believe that the average coffee drinker, drinks less than 8
cups of coffee in a 2 week period. I spoke to 50 coffee drinking
co-workers and they drank between 7,10,14,3,5,10,2,14,10,12,0, 2,
10, 14, 8, 10, 13, 12,0,10,
12,14,5,6,7,8,10,13,12,2,5,7,8,9,12,14,1,3,7,9,2,14,13,12,2,7,8,9,6,1.
Test the hypothesis that true mean number of cups of coffee
consumed in a 2-week period for coffee drinkers is less than 8 cups
per day at the 0.025 level of significance. The null H_{0}:
μ = 8 and alternate H_{A}: μ < 8.

Answer #1

5. Suppose the coffee industry claimed that the
average adult drinks 1.7 cups of coffee per day.
To test this claim, a random sample of
10 Coffee drinkers were selected
and their average coffee consumption was found to
be 2.0 cups per day.
Assume the standard deviation of daily coffee
consumption per day is 0.5 cups.
Using α = 0.20 test the Hypothesis Is the Coffee
consumption differs from the average coffee consumption?
a. State the Null Hypothesis and
alternate Hypothesis.
b. use...

A coffee manufacturer is interested in the coffee drinking
habits of Regular and Decaffeinated
coffee drinkers. A random sample of 50 regular-coffee drinkers
showed a mean of 4.35 cups per day. A sample of 40
decaffeinated-coffee drinkers showed a mean of 5.84 cups per day.
Assume the population standard deviation for those drinking regular
coffee is 1.2 cups per day and 1.36 cups per day for those drinking
decaffeinated coffee. At the .01 significance level can we conclude
that the...

According to the Coffee Research Organization, the typical
American coffee drinker consumes an average of 3.2 cups per day. A
sample of 10 senior citizens revealed they consumed the following
amounts, reported in cups, of coffee yesterday.
2
2
3
3
3
4
4
3
3 3
At the 0.01 significance level, can we conclude that the average
American consumes less that 3.2 cups per day?
Question: What are the hypotheses and the complete Decision
Rule?

A coffee manufacturer is interested in whether the mean daily
consumption of regular-coffee drinkers is less than that of
decaffeinated-coffee drinkers. Assume the population standard
deviation for those drinking regular coffee is 1.35 cups per day
and 1.49 cups per day for those drinking decaffeinated coffee. A
random sample of 49 regular-coffee drinkers showed a mean of 4.20
cups per day. A sample of 45 decaffeinated-coffee drinkers showed a
mean of 5.10 cups per day.
Use the 0.050 significance level....

I believe that the population mean number of times a person
bought hot coffee in a week is less than 4 per week. I spoke with
12 people and they said the number of coffees they bought per week
are as follows 5, 3, 5, 2, 1, 0, 5, 4, 4, 2, 3, and 5. Assume a 95%
confidence interval and assume a random sample.

1.
A recent study focused on the number of times men and women who
live alone buy take-out dinner in a month. Assume that the
distributions follow the normal probability distribution. The
information is summarized below.
Statistic
Men
Women
Sample mean
24.71
21.94
Population standard deviation
5.53
4.71
Sample size
36
41
At the .01 significance level, is there a difference in the mean
number of times men and women order take-out dinners in...

Suppose a chef claims that her meatball weight is less than 4
ounces, on average. Several of her customers do not believe her, so
the chef decides to do a hypothesis test, at a 10% significance
level, to persuade them. She cooks 14 meatballs. The mean weight of
the sample meatballs is 3.7 ounces. The chef knows from experience
that the standard deviation for her meatball weight is 0.5 ounces.
H0: μ≥4; Ha: μ<4 α=0.1 (significance level) What is the...

A medical researcher is investigating the effect of drinking
coffee on systolic blood pressure. The researcher assumes the
average systolic blood pressure is 120 mmHg. For a random sample of
200 patients, the researcher takes two measurements of systolic
blood pressure. The first systolic blood pressure measurement is
taken during a week when the patients drink no coffee, and the
second systolic blood pressure measurement is taken during a week
when the patients drink at least two cups of coffee....

Need assistance in writing a PES statement (Below I have
provided information which was obtained during the assessment
conducted using the Nutrition Care Process). Intervention would
provide weight loss plan for client, if you have any
recommendations regarding that please include that also. Thank
you.
- Basic information:
56-year-old white male
- Anthropometric information: Height = 5'6",
Weight= 171.5 lbs. Therefore, BMI = 27.7 which is considered
overweight for height.
- Weight Goal: 165 lbs. (lose 5 lbs.)
- Weight...

A treadmill manufacturer has developed a new machine with softer
tread and better fans than its current model. The manufacturer
believes these new features will enable runners to run for longer
times than they can on its current machines. To determine whether
the desired result is achieved, the manufacturer randomly sampled
35 runners. Each runner was measured for one week on the current
machine and for one week on the new machine. The weekly total
number of minutes for each...

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