A researcher wishes to estimate the percentage of Americans who support abolishing the penny. What size sample should be obtained if he wishes to estimate to be within 4 percentage points with 98% confidence if

a) he uses a 2006 estimate of 14% obtained from another poll?

b) he does not use any prior estimate?

The following selected transactions were completed by Capers Company during October of the current year:

Journalize the entries to record the transactions of Capers Company for October. Refer to the Chart of Accounts for exact wording of account titles.

Chart of Accounts

Journal

Journalize the entries to record the transactions of Capers Company for October. Refer to the Chart of Accounts for exact wording of account titles.

PAGE 10

JOURNAL

Chi Square Test

1. State null and alternative hypothesis
2. Determine a= using a=.05
3. Using the table above, compute x2 to determine if there is a difference in living arrangement and exercise status.
4. Find the critical value
5. Reject or fail to reject
6. State conclusion

When interbreeding two strains of roses, we expect the hybrid to appear in three genetic classes in the ratio 1:3:4. If the results of an experiment yield 74 hybrids of the first type, 345 of the second type, and 379 of the third type, do we have sufficient evidence to reject the hypothesized genetic ratio at the .05 level of significance? (a) Find the test statistic. (Give your answer correct to two decimal places.) (ii) Find the p-value. (Give your answer bounds exactly.)

2 large retail companies (W and T) are compared on a Census variable, percent of people who own their home within 3 square miles of the store. The percent that own their home for W is:

84, 79, 73, 81, 74, 77, 64, 78, 78, 78, 61

Percent for T is:

58, 61, 57, 62, 61, 59, 56, 64, 61, 70

- Try the jackknife bootstrap and find the estimate of difference in percentage owning their home between the two companies as to central tendency. Use lambda=.05

2 large retail companies (W and T) are compared on a Census variable, percent of people who own their home within 3 square miles of the store. The percent that own their home for W is:

84, 79, 73, 81, 74, 77, 64, 78, 78, 78, 61

Percent for T is:

58, 61, 57, 62, 61, 59, 56, 64, 61, 70

- Try the jackknife bootstrap and find the estimate of difference in percentage owning their home between the two companies as to central tendency. Use lambda=.05

Using the Data below a) Prepare FIFO, LIFO, average valueto ending inventory. b) Prepare all entries for either FIFO or LIFO – including closing entries Use periodic inventory March 1 – Had 2,200 liters at $.63 each March 3 – Purchased 2,550 liters at .70 each March 5 SOLD 2,400 at $1.10 March 11 Purchased 4,100 liters at .74 each March 20 Purchased 2,600 liters at .80 each March 30 Sold 5,500 liters for $1.25

Using the SQL for Dummies textbook in the CSU Online Library, refer to Table 3-4 “Types of Protection” on page 74 to create three scenarios in which the use of protection operations are used to secure a database. Describe the scenario, select which protection operations users should use in the scenario, and then explain your selection.

Your paper should be three pages in length. All sources used, including the textbook, must be referenced; paraphrased and quoted material must have accompanying citations, and cited per APA guidelines.

1. Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day.

A sample of 65 stocks traded on the NYSE that day showed that 28 went up.

You are conducting a study to see if the proportion of stocks that went up is is significantly more than 0.3. You use a significance level of α=0.01α=0.01.

What is the test statistic for this sample? (Report answer accurate to three decimal places.)
test statistic =

What is the p-value for this sample? (Report answer accurate to four decimal places.)
p-value =

The p-value is...

• less than (or equal to) αα
• greater than αα

This test statistic leads to a decision to...

• reject the null
• accept the null
• fail to reject the null

As such, the final conclusion is that...

• There is sufficient evidence to warrant rejection of the claim that the proportion of stocks that went up is is more than 0.3.
• There is not sufficient evidence to warrant rejection of the claim that the proportion of stocks that went up is is more than 0.3.
• The sample data support the claim that the proportion of stocks that went up is is more than 0.3.
• There is not sufficient sample evidence to support the claim that the proportion of stocks that went up is is more than 0.3.

2. You are concerned that nausea may be a side effect of Tamiflu, but you cannot just give Tamiflu to patients with the flu and say that nausea is a side effect if people become nauseous. This is because nausea is common for people who have the flu. From past studies you know that about 30% of people who get the flu experience nausea. You collected data on 1685 patients who were taking Tamiflu to relieve symtoms of the flu, and found that 553 experienced nausea. Use a 0.01 significance level to test the claim that the percentage of people who take Tamiflu for the relief of flu symtoms and experience nausea is greater than 30%.  

a) Identify the null and alternative hypotheses?

H0 Select an answer p = p ≠ p < p > p ≤ p ≥ μ = μ ≠ μ < μ > μ ≤ μ ≥  

H1:  Select an answer p = p ≠ p < p > p ≤ p ≥ μ = μ ≠ μ < μ > μ ≤ μ ≥  

b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)?

• left-tailed
• right-tailed
• two-tailed

c) Identify the appropriate significance level.


d) Calculate your test statistic. Write the result below, and be sure to round your final answer to two decimal places.


e) Calculate your p-value. Write the result below, and be sure to round your final answer to four decimal places.


f) Do you reject the null hypothesis?

• We reject the null hypothesis, since the p-value is less than the significance level.
• We reject the null hypothesis, since the p-value is not less than the significance level.
• We fail to reject the null hypothesis, since the p-value is less than the significance level.
• We fail to reject the null hypothesis, since the p-value is not less than the significance level.

g) Select the statement below that best represents the conclusion that can be made.

• There is sufficient evidence to warrant rejection of the claim that the percentage of people who experience nausea is greater than 30%.
• There is not sufficient evidence to warrant rejection of the claim that the percentage of people who experience nausea is greater than 30%.
• The sample data support the claim that the percentage of people who experience nausea is greater than 30%
• There is not sufficient sample evidence to support the claim that the percentage of people who experience nausea is greater than 30%

h) Can we conclude that nausea a side effect of Tamiflu?

• Yes
• No

1. Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day.

A sample of 65 stocks traded on the NYSE that day showed that 28 went up.

You are conducting a study to see if the proportion of stocks that went up is is significantly more than 0.3. You use a significance level of α=0.01α=0.01.

What is the test statistic for this sample? (Report answer accurate to three decimal places.)
test statistic =

What is the p-value for this sample? (Report answer accurate to four decimal places.)
p-value =

The p-value is...

• less than (or equal to) αα
• greater than αα

This test statistic leads to a decision to...

• reject the null
• accept the null
• fail to reject the null

As such, the final conclusion is that...

• There is sufficient evidence to warrant rejection of the claim that the proportion of stocks that went up is is more than 0.3.
• There is not sufficient evidence to warrant rejection of the claim that the proportion of stocks that went up is is more than 0.3.
• The sample data support the claim that the proportion of stocks that went up is is more than 0.3.
• There is not sufficient sample evidence to support the claim that the proportion of stocks that went up is is more than 0.3.

2. You are concerned that nausea may be a side effect of Tamiflu, but you cannot just give Tamiflu to patients with the flu and say that nausea is a side effect if people become nauseous. This is because nausea is common for people who have the flu. From past studies you know that about 30% of people who get the flu experience nausea. You collected data on 1685 patients who were taking Tamiflu to relieve symtoms of the flu, and found that 553 experienced nausea. Use a 0.01 significance level to test the claim that the percentage of people who take Tamiflu for the relief of flu symtoms and experience nausea is greater than 30%.  

a) Identify the null and alternative hypotheses?

H0 Select an answer p = p ≠ p < p > p ≤ p ≥ μ = μ ≠ μ < μ > μ ≤ μ ≥  

H1:  Select an answer p = p ≠ p < p > p ≤ p ≥ μ = μ ≠ μ < μ > μ ≤ μ ≥  

b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)?

• left-tailed
• right-tailed
• two-tailed

c) Identify the appropriate significance level.


d) Calculate your test statistic. Write the result below, and be sure to round your final answer to two decimal places.


e) Calculate your p-value. Write the result below, and be sure to round your final answer to four decimal places.


f) Do you reject the null hypothesis?

• We reject the null hypothesis, since the p-value is less than the significance level.
• We reject the null hypothesis, since the p-value is not less than the significance level.
• We fail to reject the null hypothesis, since the p-value is less than the significance level.
• We fail to reject the null hypothesis, since the p-value is not less than the significance level.

g) Select the statement below that best represents the conclusion that can be made.

• There is sufficient evidence to warrant rejection of the claim that the percentage of people who experience nausea is greater than 30%.
• There is not sufficient evidence to warrant rejection of the claim that the percentage of people who experience nausea is greater than 30%.
• The sample data support the claim that the percentage of people who experience nausea is greater than 30%
• There is not sufficient sample evidence to support the claim that the percentage of people who experience nausea is greater than 30%

h) Can we conclude that nausea a side effect of Tamiflu?

• Yes
• No