Question
In: Statistics and Probability
A vending machine dispenses coffee. The average cup of coffee is supposed to contain 7.0 ounces....
A vending machine dispenses coffee. The average cup of coffee is supposed to contain 7.0 ounces. Eight cups of coffee from this machine show the average content to be 7.3 ounces with a standard deviation of 0.5 ounce. Using a 5% level of significance, test whether the machine has slipped out of adjustment and if the average amount of coffee per cup is different from 7 ounces.
Determine the p-value and interpret the results
Solutions
orchestra answered 2 years agoRelated Solutions
A machine in the student lounge dispenses coffee. The average cup of coffee is supposed to...
A machine in the student lounge dispenses coffee. The average
cup of coffee is supposed to contain 7.0 ounces. A random sample of
eight cups of coffee from this machine show the average content to
be 7.4 ounces with a standard deviation of 0.70 ounce. Do you think
that the machine has slipped out of adjustment and that the average
amount of coffee per cup is different from 7 ounces? Use a 5% level
of significance. What is the value...
A machine in the student lounge dispenses coffee. The average cup of coffee is supposed to...
A machine in the student lounge dispenses coffee. The average
cup of coffee is supposed to contain 7.0 ounces. A random sample of
twelve cups of coffee from this machine show the average content to
be 7.3 ounces with a standard deviation of 0.70 ounce. Do you think
that the machine has slipped out of adjustment and that the average
amount of coffee per cup is different from 7 ounces? Use a 5% level
of significance.
What are we testing...
A machine in the student lounge dispenses coffee. The average cup of coffee is supposed to...
A machine in the student lounge dispenses coffee. The average
cup of coffee is supposed to contain 7.0 ounces. A random sample of
twelve cups of coffee from this machine show the average content to
be 7.2 ounces with a standard deviation of 0.60 ounce. Do you think
that the machine has slipped out of adjustment and that the average
amount of coffee per cup is different from 7 ounces? Use a 5% level
of significance.
What are we testing...
A machine in the student lounge dispenses coffee. The average cup of coffee is supposed to...
A machine in the student lounge dispenses coffee. The average
cup of coffee is supposed to contain 7.0 ounces. A random sample of
eleven cups of coffee from this machine show the average content to
be 7.2 ounces with a standard deviation of 0.50 ounce. Do you think
that the machine has slipped out of adjustment and that the average
amount of coffee per cup is different from 7 ounces? Use a 5% level
of significance.
What are we testing...
A machine in the student lounge dispenses coffee. The average cup of coffee is supposed to...
A machine in the student lounge dispenses coffee. The average
cup of coffee is supposed to contain 7.0 ounces. A random sample of
ten cups of coffee from this machine show the average content to be
7.2 ounces with a standard deviation of 0.70 ounce. Do you think
that the machine has slipped out of adjustment and that the average
amount of coffee per cup is different from 7 ounces? Use a 5% level
of significance.
a.) What are we...
A machine in the student lounge dispenses coffee. The average cup of coffee is supposed to...
A machine in the student lounge dispenses coffee. The average
cup of coffee is supposed to contain 7.0 ounces. A random sample of
six cups of coffee from this machine show the average content to be
7.3 ounces with a standard deviation of 0.40 ounce. Do you think
that the machine has slipped out of adjustment and that the average
amount of coffee per cup is different from 7 ounces? Use a 5% level
of significance.
What are we testing...
A coffee machine dispenses coffee into paper cups. You are supposed to get 10 ounces of...
A coffee machine dispenses coffee into paper cups. You are supposed
to get 10 ounces of coffee, but the amount varies slightly from cup
to cup. Here are the amounts measured in a random sample of 20
cups:
9.9
9.7
10.0
10.1
9.9
9.6
9.8
9.8
10.0
9.5
9.7
10.1
9.9
9.6
10.2
9.8
10.0
9.9
9.5 9.9
Use StatCrunch to construct a frequency histogram that...
A soda vending machine is supposed to dispense 7 fluid ounces of soda into a cup....
A soda vending machine is supposed to dispense 7 fluid ounces of
soda into a cup. The canteen manager tested the machine by taking a
sample of 20 cups of soda. He measured the 20 cups of soda
individually and found that the measurements had a mean of 8.08 fl.
oz. and a standard deviation of 2.85 fl. oz. Determine if the
machine dispense is different from the required ounces set by the
company.
(a) State the null hypothesis and...
A coffee machine is supposed to dispense 8 ounces (oz) of coffee into a paper cup....
A coffee machine is supposed to dispense 8 ounces (oz) of coffee
into a paper cup. In reality, the amounts dispensed vary from cup
to cup. However, if the machine is working properly, the standard
deviation of the amounts dispensed should be less than 0.3/0.4/0.5
oz. To test this, a random sample of 10/15/20 cups was taken, and
it give a standard deviation of 0.255 oz.
a) At the 5% significance level, do the
data provide sufficient evidence to conclude...
A coffee machine dispenses 6 fluid ounces of coffee into a paper cup. Previous studies have...
A coffee machine dispenses 6 fluid ounces of coffee into a
paper cup. Previous studies have shown that the amount dispensed is
a normal distribution. A random sample of 15 cups is obtained where
the standard deviation, s, is 0.154.
Determine if the requirements are met to compute a confidence
interval for the true standard deviation, σ, of amounts of coffee
being dispensed. List each requirement and state information given
to support each one.
If the requirements are met, use...
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