Question

A company that makes cola drinks states that the mean caffeine content per 12-ounce bottle of cola is 50 milligrams. You want to test this claim. During your tests, you find that a random sample of thirty 12-ounce bottles of cola has a mean caffeine content of 50.4 milligrams with a standard deviation of 7.6 milligrams. At alphaequals0.05, can you reject the company's claim? Complete parts (a) through (e).

Answer #1

A company that makes cola drinks states that the mean caffeine
content per 12-ounce bottle of cola is 55 milligrams. You want to
test this claim. During your tests, you find that a random sample
of thirty 12-ounce bottles of cola has a mean caffeine content of
53.3 milligrams. Assume the population is normally distributed and
the population standard deviation is 6.1 milligrams. At
alphaαequals=0.07 can you reject the company's claim? Complete
parts (a) through (e).

A consumer research organization states that the mean caffeine
content per 12-ounce bottle of a population of caffeinated soft
drinks is 37.8 milligrams. You find a random sample of 48 12-ounce
bottles of caffeinated soft drinks that has a mean caffeine content
of 41.5 milligrams. Assume the population standard deviation is
12.5 milligrams. At α=0.05, what type of test is this and can you
reject the organization’s claim using the test statistic?

A
company that makes college rank states that the main caffeine
content per 12 ounce bottle of cola is 50 mg you want to test this
claim during your test you find a random sample of 3012 ounce
bottles of cola has a main caffeine content of 48.4 mg assume the
population is normally distributed in the population standard
deviation is 6.3 mg at 0.01 can you reject the companies claim
identify HO and HOa

A company that makes cola drinks states that the mean caffeine
content per 12-ounce bottle of cola is 40 milligrams. You want to
test this claim. During your tests, you find that a random sample
of thirty 12-ounce bottles of cola has a mean caffeine content of
40.6 milligrams. Assume the population is normally distributed and
the population standard deviation is 7.5 milligrams. At
alphaequals0.09, can you reject the company's claim? Complete
parts (a) through (e).
(a) Identify Upper H...

A consumer research organization states that the mean caffeine
content per 12-ounce bottle of a population of caffeinated soft
drinks is 37.8 milligrams. You find a random sample of 48 12-ounce
bottles of caffeinated soft drinks that has a mean caffeine content
of 41.5 milligrams. Assume the population standard deviation is
12.5 milligrams. At α=0.05, what type of test is this and can you
reject the organization’s claim using the test statistic?
Claim is null, fail to reject the null...

A fast food restaurant estimates that the mean sodium content in
one of its breakfast sandwiches is no more than 923 milligrams. A
random sample of 57 breakfast sandwiches has a mean sodium content
of 917 milligrams. Assume the population standard deviation is 24
milligrams. At alpha equals=0.01 do you have enough evidence to
reject the restaurant's claim? Complete parts (a) through
(e).

The dean of a university estimates that the mean number of
classroom hours per week for full-time faculty is
11.0.
As a member of the student council, you want to test this
claim. A random sample of the number of classroom hours for eight
full-time faculty for one week is shown in the table below. At
α=0.01,
can you reject the dean's claim? Complete parts (a) through
(d) below. Assume the population is normally distributed.
10.2
7.6
13.7
6.7
6.1...

A restaurant association says the typical household spends a
mean of $3217 per year on food away from home.You are a consumer
reporter for a national publication and want to test this claim.
You randomly select 12 households and find out how much each spent
on food away from home per year. Can you reject the restaurant
association's claim at alpha equals 0.02? Complete parts (a)
through (d). 1827 1747 2848 2444 3372 3500 2065 4533 3058 2134
3114 2558

A bottled water distributor wants to determine whether the mean
amount of water contained in 1-gallon bottles purchased from a
nationally known water bottling company is actually 1 gallon. You
know from the water bottling company specifications that the
standard deviation of the amount of water is
.03 gallon. You select a random sample of 50 bottles, and the
mean amount of water per 1-gallon bottle is 0.993 gallon. Complete
parts (a) through (d) below.
a. Is there evidence that...

The dean of a university estimates that the mean number of
classroom hours per week for full-time faculty is
11.0.
As a member of the student council, you want to test this
claim. A random sample of the number of classroom hours for eight
full-time faculty for one week is shown in the table below. At
α=0.05,
can you reject the dean's claim? Complete parts (a) through
(d) below. Assume the population is normally distributed.
12.3
7.2
11.8
7.5
6.8...

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