Question

2. The cost of SeaWorld tickets in the US varies from city to city. The standard deviation for prices for San Antonio, San Diego and Orlando is $21.79. A survey was performed to test the claim that the mean cost of a SeaWorld ticket (not considering special discounts) is $64.99. Fifteen tickets generate a mean cost of $54.99 with a standard deviation of $34.99. Do the data support the claim at 5% level?

a. What is Ho? | ||||

b. What is Ha? | ||||

c. In words, CLEARLY state what your random variable X ¯ or P′ represents. | ||||

d. State the distribution to use for the test. | ||||

e. What is the test statistic? | ||||

f. What is the p-value? | ||||

g. What is alpha? | ||||

h. What is your decision and reason for decision? | ||||

i. What is your conclusion? | ||||

j. Construct a 95% confidence interval for the true mean or proportion. |

Answer #1

The cost of a daily newspaper varies from city to city. However,
the variation among prices remains steady with a standard deviation
of 20¢. A study was done to test the claim that the mean cost of a
daily newspaper is $1.00. Twelve costs yield a mean cost of 95¢
with a standard deviation of 18¢. Do the data support the claim at
the 99% confidence level?

The cost of a daily newspaper varies from city to city. However,
the variation among prices remains steady with a standard deviation
of 6¢. A study was done to test the claim that the average cost of
a daily newspaper is 35¢. Eleven costs yield an average cost of 30¢
with a standard deviation of 4¢. Do the data support the claim at
the 1% level?
What is the P value? It is NOT 0.0028 nor 0.0029 that's what I...

The cost of a daily newspaper varies from city to city. However,
the variation among prices remains steady with a population
standard deviation of $0.20. A study was done to test the claim
that the mean cost of a daily newspaper is $1.00. Thirteen costs
yield a mean cost of $0.95 with a standard deviation of $0.18. Do
the data support the claim at the 1% level?
Note: If you are using a Student's t-distribution for the
problem, you may...

1. Describe in full sentences the hypothesis testing steps &
provide an example to solve by using hypothesis testing.
2. What does Type I and Type II errors mean?
3. The cost of a Starbucks Grande Caffe Latte varies from city
to city. However, the variation among prices remains steady with a
standard deviation of $0.28.
A research was done to test the claim that the mean cost of a
Starbucks Grande Caffe Latte is $3.65. Ten Starbucks Grande Caffe...

Various temperature measurements are recorded at different times
for a particular city. The mean of 20 o C is obtained from a sample
of 32 temperatures. If we know that historically for this city the
mean daily temperature is μ = 22 o C and that σ = 3.5 o C , test
the claim that the city is actually colder than now than previously
believed. Use α = .01 for this problem. Round all values to three
decimal places...

2. On the CGST (Coyote Super Genius Test), the scores of 22
coyotes have a standard deviation of 33.4 points. This result
prompts a test administrator, Wile E. Coyote, to claim that the
standard deviation for all coyotes on the CGST is at most 34
points. At a 10% level of significance, is there enough evidence to
support the Wile E. Coyote’s claim?
State the null and alternative hypotheses.
Answer:
State the hypothesis test that is used to test the...

From generation to generation, the mean age when smokers first
start to smoke varies. However, the standard deviation of that age
remains constant at around 2.1 years. A survey of 39 smokers of
this generation was done to see if the mean starting age is at
least 19. The sample mean was 18.2 with a sample standard deviation
of 1.3. Do the data support the claim at the 5% level?
Note: If you are using a Student's t-distribution for the...

From generation to generation, the mean age when smokers first
start to smoke varies. However, the standard deviation of that age
remains constant at around 2.1 years. A survey of 39 smokers of
this generation was done to see if the mean starting age is at
least 19. The sample mean was 18.1 with a sample standard deviation
of 1.3. Do the data support the claim at the 5% level?
1. State the distribution to use for the test. (Round...

1. You are considering buying a raffle ticket for $10. One
thousand tickets are being sold and the winner gets $6,000. The
winning number will be randomly drawn, so your probability of
winning is .001 (=0.1%). If you win, the net benefit to you is
$5,990 (the $6,000 winnings minus the $10 you paid for the ticket).
If you lose, the net benefit is minus $10 (the cost of the
ticket).
2. Your car insurance company has learned, from years...

A sample of 36 observations is selected from one population with
a population standard deviation of 3.8. The sample mean is 100.5. A
sample of 50 observations is selected from a second population with
a population standard deviation of 4.4. The sample mean is 99.3.
Conduct the following test of hypothesis using the 0.02
significance level.
H0 : μ1 = μ2
H1 : μ1 ≠ μ2
(a)
This is a (Click to select)twoone-tailed test.
(b)
State the decision rule....

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