Question

The owner of a local golf course wants to examine the difference between the average ages of males and females that play on the golf course. Specifically, he wants to test is if the average age of males is greater than the average age of females. Assuming males are considered group 1 and females are group 2, this means the hypotheses he wants to tests are as follows: Null Hypothesis: μ1 ≤ μ2, Alternative Hypothesis: μ1 > μ2. He randomly samples 28 men and 21 women that play on his course. He finds the average age of the men to be 31.06 with a standard deviation of 17.602. The average age of the women was 33.83 with a standard deviation of 11.825. If the owner conducts a hypothesis test, what is the test statistic and what is the p-value? Assume the population standard deviations are the same.

Answer #1

from above test statistic t =-0.623

p value=0.268

The owner of a local golf course wants to examine the difference
between the average ages of males and females that play on the golf
course. Specifically, he wants to test if the average age of males
is different from the average age of females. If the owner conducts
a hypothesis test for two independent samples and calculates a
p-value of 0.3318, what is the appropriate conclusion? Label males
as group 1 and females as group 2.
Question 4 options:...

The owner of a local golf course wants to estimate the
difference between the average ages of males and females that play
on the golf course. He randomly samples 12 men and 10 women that
play on his course. He finds the average age of the men to be 30.81
with a standard deviation of 5.071. The average age of the women
was 46.19 with a standard deviation of 11.982. Construct a 95%
confidence interval to estimate the difference of...

The owner of a local golf course wants to estimate the
difference between the average ages of males and females that play
on the golf course. He randomly samples 30 men and 26 women that
play on his course. He finds the average age of the men to be
49.844 with a standard deviation of 5.208. The average age of the
women was 35.237 with a standard deviation of 5.573. He uses this
information to calculate a 95% confidence interval...

The owner of a local golf course wants to estimate the
difference between the average ages of males and females that play
on the golf course. He randomly samples 25 men and 28 women that
play on his course. He finds the average age of the men to be
36.105 with a standard deviation of 5.507. The average age of the
women was 48.973 with a standard deviation of 5.62. He uses this
information to calculate a 90% confidence interval...

The owner of a local clothes shop wants to know if there is a
difference between the average ages of males and females customers.
He randomly samples 42 men and 44 women customers this month. He
finds the average age of the men to be 29.07 with a standard
deviation of 5.343. The average age of the women was 32.68 with a
standard deviation of 9.656. Is there evidence of a difference
between the mean ages for 2 genders?

1. You are interested in whether the average lifetime of
Duracell AAA batteries is less than the average lifetime of
Energizer AAA batteries. You lay out your hypotheses as follows:
Null Hypothesis: μ1 ≥ μ2, Alternative
Hypothesis: μ1 < μ2 (Duracell = Group 1,
Energizer = Group 2). You perform an experiment on 20 randomly
selected Duracell AAA batteries and 40 randomly selected Energizer
AAA batteries and test them using a battery drainer. The Duracells
had an average lifetime of...

Question 13 (1 point)
A statistics professor wants to examine the number of hours that
seniors and freshmen study for the final. Specifically, the
professor wants to test if the average number of hours that seniors
study is greater than the average number of hours that freshmen
study. If the seniors are considered group 1 and the freshmen are
considered group 2, what are the hypotheses for this scenario?
Question 13 options:
1)
HO: μ1 =
μ2
HA: μ1 ≠...

A medical researcher wants to determine if the average hospital
stay of patients that undergo a certain procedure is greater than
9.1 days. The hypotheses for this scenario are as follows: Null
Hypothesis: μ ≤ 9.1, Alternative Hypothesis: μ > 9.1. If the
researcher takes a random sample of patients and calculates a
p-value of 0.2003 based on the data, what is the appropriate
conclusion? Conclude at the 5% level of significance.
Question 5 options:
1)
The true average hospital...

PART I
The owner of a local golf course wanted to determine the average
age (in years) of the golfers that played on the course. In a
random sample of 27 golfers that visited his course, the sample
mean was 47 years old and the standard deviation was 5.11 years.
Using this information, the owner calculated the confidence
interval of (45.3, 48.7) with a confidence level of 90% for the
average age. Which of the following is an appropriate
interpretation...

Suppose you work for a political pollster during an election
year. You are tasked with determining the projected winner of the
November election. That is, you wish to determine if the number of
votes for Candidate 1 is less than the votes for Candidate 2. What
are the hypotheses for this test?
Question 6 options:
1)
HO: μ1 ≤ μ2
HA: μ1 > μ2
2)
HO: μ1 = μ2
HA: μ1 ≠ μ2
3)
HO: μ1 > μ2
HA: μ1...

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