Question

Then, answer the following five parts:

- Write down the null hypothesis.
- Write down the alternative hypothesis.
- Explain why you chose your hypotheses as such.
- Do a hypothesist test of your data at the α = 2% level of
significance for the population proportion by carrying out the
following five steps:
- View an example of how to use StatCrunch to compute the value
Z
_{α}

If it is a left-tailed test, what is the critical value, -*z*_{0.02}?

If it is a right-tailed test, what is the critical value,*z*_{0.02}?

If it is a two-tailed test, what are the two critical values, ±*z*_{0.01}? - Write down the test statistic,
*z*_{0}. - Write down the P-value.
- Write down the sample size.
- Write down the sample proportion.
- Use the
*classical*method to reach your conclusion on whether or not to accept or reject the null hypothesis. Be sure to explain how you reached your conclusion. - Use the
*P-value*to reach your conclusion on whether or not to accept or reject the null hypothesis. Be sure to explain how you reached your conclusion.

- View an example of how to use StatCrunch to compute the value
Z
- Does the conclusion make sense to you? why or why not?

One sample proportion hypothesis test:

Outcomes in : How is the main dish typically cooked?

Success : Baked

p : Proportion of successes

H_{0} : p = 0.5

H_{A} : p ≠ 0.5

**Hypothesis test results:**

Variable | Count | Total | Sample Prop. | Std. Err. | Z-Stat | P-value |
---|---|---|---|---|---|---|

How is the main dish typically cooked? | 481 | 974 | 0.49383984 | 0.016021033 | -0.3845048 | 0.7006 |

Answer #1

Test the null hypothesis H0:p=0.5against the alternative
hypothesis HA:p<0.5, when 89 individuals in a random sample of
218 have a characteristic of interest.
Proportions are very sensitive to round-off error. Please
ensure that you attempt to round p^as little as possible.
a) Calculate the value of the z test statistic, for
testing the null hypothesis that the population proportion is
0.5.
Round your response to at least 3 decimal places.
b) The p-value falls within which one of the following...

Test the null hypothesis H0:p=0.5against the alternative
hypothesis HA:p<0.5, when 92 individuals in a random sample of
219 have a characteristic of interest.
Proportions are very sensitive to round-off error. Please
ensure that you attempt to round p^as little as possible.
a) Calculate the value of the z test statistic, for
testing the null hypothesis that the population proportion is
0.5.
Round your response to at least 3 decimal places.
b) The p-value falls within which one of the following...

Perform a hypothesis for the null and alternative
hypotheses:
??:?? =? ??:?? <?
The following is the sample information.
?̅=?.? ?? =?.? ?=?? ?=?.??
a. (1 point) Calculate the appropriate test statistic, p-value,
and give a general conclusion of reject or fail to reject the null
hypothesis based on the significance level. Show all work
b. (1 point) Now suppose you know ?? = 1.2. Calculate the
appropriate test statistic, p-value and give a general conclusion
of reject or fail...

For the following question, you need to check the requirements
and identify the null hypothesis, alternative hypothesis, test
statistic, P-value, critical values, then state the conclusion
about the null hypothesis, as well as the final conclusion that
addresses the original claim. Assuming the sample is independent
simple random sample. Use both the P-value method and critical
value method.
In a study of Burger King driver-through orders, it was found
that 264 orders were accurate and 54 were not accurate. For...

a. State the Null and Alternative
Hypotheses in words.
b. Perform the appropriate hypothesis
test using an Alpha of .05. Be sure to write what critical value
you are using in your work.
c. State your results first by saying
whether you reject or fail to reject the null hypothesis. Then
state the conclusion in your own words.
d. type in your hypotheses, the df
value you use, and the critical value. Also include your conclusion
and When you calculate...

Identify the null hypothesis, alternative hypothesis,
test statistic, P-value, conclusion about the null hypothesis, and
final conclusion that addresses the original claim. Use the P-value
method.
A simple random sample of 55 adults is obtained from a normally
distributed population, and each person’s red blood cell count (in
cells per microliter) is measured. The sample mean is 5.26 and the
sample standard deviation is 0.54. Use α = .07 to test the claim
that the sample is from a population...

Identify the following. Show your work. a) null hypothesis,
alternative hypothesis, b) test statistic, c) P-value or critical
value(s) d) conclusion about the null hypothesis, and final
conclusion that addresses the original claim. In a clinical study
of an allergy drug, 108 of the 202 subjects reported experiencing
significant relief from their symptoms. At the 0.01 significance
level, test the claim that more than half of all those using the
drug experience relief.

Identify the null hypothesis, alternative hypothesis,
test statistic, P-value, conclusion about the null hypothesis, and
final conclusion that addresses the original claim. Use the P-value
method.
A study was done on body temperatures of men and women. Here are
the sample statistics for the men: x1 = 97.55oF, s1 = 0.83oF, n1 =
11, and for the women: x2 = 97.31oF, s2 = 0.65oF, n2 = 59. Use a
0.06 significance level to test the claim that µ1 > µ2.

For the following problems, (a) identify null hypothesis,
alternative hypothesis, (b) determine whether it is left-tailed,
right-tailed, or two-tailed, (c) find the p-value, (d) make the
decision whether you reject the null hypothesis or fail to reject
the null hypothesis, and e) interpret your result.
4). A medical researcher says that less than 80% of U.S. adults
think that healthy children
should require to be vaccinated.
In a random sample of 200 U.S. adults, 164 think that
healthy...

Conduct a test of the null hypothesis that the mean height for
all students in the Census at School database is equal to 155 cm vs
the alternative that the mean Height is greater than 155 cm. Use a
significance level of 0.05.
a. State the null and alternative hypotheses.
Ho: m = 155
Ha: m > 155
b. Provide the Statcrunch output table.
Hypothesis test results:
Variable
Sample Mean
Std. Err.
DF
T-Stat
P-value
Height
159.86
1.7311103
49
2.8074468...

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