Question
In: Statistics and Probability
Directions: For each question, you need to show each step of the hypothesis test, state your...
Directions: For each question, you need to show each step of the hypothesis test, state your null and alternate hypothesis, identify if you are conducting a two-tailed or a one-tailed hypothesis test, identify the Zcrit and Zobt, graph the normal curve, label the critical value and the test statistic, shade the rejection region, tell whether we reject or retain the null and make a conclusion statement. You also need to calculate Cohen’s d, the probability of committing a type I error and type II error, and the strength of the effect size.
1. The statistics final exam score for a population of college students in a major metropolitan university is 64 with a standard deviation of 5. One of the instructors decides to use a new teaching method to help with retention of material across all courses. To test the new teaching method, the department randomly selects 25 students from the population and records a mean statistics final exam score of 68. Conduct a directional hypothesis test to determine whether the new teaching method has an effect on retention of course material.
Solutions
orchestra answered 1 year agoRelated Solutions
Directions: For each question, you need to show each step of the hypothesis test, state your...
Directions: For each question, you need to show each step of the
hypothesis test, state your null and alternate hypothesis, identify
if you are conducting a two-tailed or a one-tailed hypothesis test,
identify the Zcrit and Zobt, graph the normal curve, label the
critical value and the test statistic, shade the rejection region,
tell whether we reject or retain the null and make a conclusion
statement. You also need to calculate Cohen’s d, the probability of
committing a type I...
Directions: For each question, you need to show each step of the hypothesis test, state your...
Directions: For each question, you need to show each step of the
hypothesis test, state your null and alternate hypothesis, identify
if you are conducting a two-tailed or a one-tailed hypothesis test,
identify the Zcrit and Zobt, graph the normal curve, label the
critical value and the test statistic, shade the rejection region,
tell whether we reject or retain the null and make a conclusion
statement. You also need to calculate Cohen’s d, the probability of
committing a type I...
Directions: For each question, you need to show each step of the hypothesis test, state your...
Directions: For each question, you need to show each step of the
hypothesis test, state your null and alternate hypothesis, identify
if you are conducting a two-tailed or a one-tailed hypothesis test,
identify the Zcrit and Zobt, graph the normal curve, label the
critical value and the test statistic, shade the rejection region,
tell whether we reject or retain the null and make a conclusion
statement. You also need to calculate Cohen’s d, the probability of
committing a type I...
Hypothesis Testing Directions: You will conduct your own hypothesis test. Find something you think is interesting...
Hypothesis Testing
Directions:
You will conduct your own hypothesis test. Find something you
think is interesting and contains a proportion that you would like
to test. You need to conduct a left, right or two-tailed hypothesis
test based on whether or not you believe this statistic to be too
low, too high or just plain wrong. You will need to state your
hypothesis, determine the minimum necessary sample size, perform
calculations, and present your results in a short paper.
Use...
Conduct a hypothesis test to answer the following research question. Be sure to clearly state each...
Conduct a hypothesis test to answer the following research
question. Be sure to clearly state each step of a hypothesis in
your response as well as indicating your critical regions,
computing obtained statistic and drawing a conclusion.
Does prenatal exposure to alcohol impact birth weight (test n =
16 newborn rats)
Population Values : μ = 18 grams σ = 4 grams
Sample Mean: M = 15 grams
Directions: Answer each question to the best of your ability. Please show all work (including the...
Directions: Answer each question to the best of your
ability. Please show all work (including the 7 steps of
Hypothesis Test) and round decimals to the nearest
ten-thousandths.
3. A student organization uses the proceeds from a particular
soft-drink dispensing machine to finance its
activities. The price per can had been $0.50 for a long time, and
the average daily revenue during that
period had been $51.50. The price was recently increased to $0.60
per can. A random sample of...
Conduct a hypothesis test. Perform each of the following steps: a) state the hypothesis and identify...
Conduct a hypothesis test. Perform each of the following
steps:
a) state the hypothesis and identify the claim
b) Find the critical value(s)
c) Compute the test value
d) make the decision
e) Summarize the results
It has been found that the average time users spend online per
week is 18.3 hours. A random sample of 48 teenagers indicated that
their mean amount of Internet time per week was 19.5 hours with a
population standard deviation of 5.7. At the...
Complete the attached worksheet. You will need to show your work for each question 1) CircumSpect...
Complete the attached worksheet. You will need to show your work
for each question
1) CircumSpect Products produces a home sentry system, easily
installed by a homeowner, that they can produce and ship at a cost
of $214 per unit. The company has fixed costs of $11,000 per month.
The company believes it can position the product as an upscale
specialty item and retail it for $995, or it can use a broader
market strategy and sell it for $495....
For each question please state your null and alternative hypothesis, your p-value and conclusion of your...
For each question please state your null and alternative
hypothesis, your p-value and conclusion of your hypothesis test.
You may use your calculator to perform the hypothesis.
Research conducted a few years ago showed that 35% of UCLA
students had travelled outside the US. UCLA has recently
implemented a new study abroad program and results of a new survey
show that out of the 100 randomly sampled students 40 have
travelled abroad. Is there significant evidence to suggest that the...
Note: I need a step by step answer to the question with an explanation of your...
Note: I need a step by step answer to the question with
an explanation of your answer so that I can understand how to
reproduce the steps.
Marsha Inc. has the following
budgeted data for 2016:
Cash balance, beginning
$15,000
Collections from customers
145,000
Direct materials purchases
25,000
Expenses:
Operating expenses
50,000
Payroll
75,000
Income taxes
6,000
Other:
Machinery purchases
30,000
Operating expenses include $20,000
depreciation for buildings and equipment. All purchases of
materials are paid for in the period...
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