The average income in France is £56,516. A team of researchers is interested to see the impact of geographical location on income. A sample of 35 participants from the northeastern region of France were asked to provide their income. The average income was £49,520 with a standard deviation of £1,200.

1. Which test will you use to determine significance? One tail or two tail?

2. State the null and alternative hypotheses

3. State your research criteria

4. Calculate your test statistic

5. State your decision regarding significance

6. Calculate the confidence interval, if applicable.

7. Calculate the effect size and proportion of variance, if applicable.

A doctor claims that the number of births by day of the week is uniformly distributed. To test the claim, you randomly select births from a recent year and record the day of the week the birth takes place. Use a 1% significance to test the claim.
Round to the fourth as needed.

a) Type out the null and alternative hypothesis

b) State you test statistic

c) State your p-value

d) State your decision rule

e) Type out your conclusion

The delivery service is a competitive business today with several airports vying to be the highest volume delivery location. Memphis and Louisville are 2 of these airports, home to Fedex and UPS respectively. The number of units (in 1000’s) delivered daily from each of those airports are as follows: Memphis: 485, 534, 650, 554, 550, 572, 487, 533, 526, 410, 515, 578, 497, 592, 448, 469 Louisville: 442, 580, 479, 486, 528, 524, 492, 478, 425, 485, 390, 535. Using alpha = .05, test to determine if there is a significant difference between the 2 airports with respect to the mean number of units delivered daily. Which airport, on average, delivered more packages? Is there any other information that you would like to know? Be specific and explain in a few sentences.

1. State which test you are using
2. State your hypotheses in the correct form (both Ho and Ha).
3. State your rejection rule (in terms of the critical value not in terms of alpha)
4. Calculate your test statistic
5. State your decision made
6. Determine the p-value
7. State your conclusion, in the context of the problem
8. State which type of error you may have made

A market researcher believes that brand perception of one of the company’s products may vary between different groups. After interviewing 343 persons, the following data was compiled. Can we conclude that brand perception is dependent on age?

Age                        Favorable            Unfavorable       Neutral

18-30                     57                           16                           17          

30-45                     78                           24                           27          

Over 45                 76                           24                           24          

b. State the null and the alternate hypotheses.

c. State the degrees of freedom and the critical value – use the chi-square chart and a 0.05 level of significance.

d. Use your calculator to determine the test statistic and the p-value.

e. Conclude the test by comparing the test statistic and the critical value.

f. Conclude the test by comparing the p-value and the level of significance.

g. State your conclusion IN CONTEXT.

25. The​ quality-control manager at a compact fluorescent light bulb​ (CFL) factory needs to determine whether the mean life of a large shipment of CFLs is equal to 7,485 hours. The population standard deviation is 840 hours. A random sample of 49 light bulbs indicates a sample mean life of 7,305 hours

At the 0.05 level of​ significance, is there evidence that the mean life is different from 7485?

Determine the null​ hypothesis, and the alternative​ hypothesis

What is the test​ statistic?

What​ is/are the critical​ value(s)?

What is the final​ conclusion?

What is the​ p-value?

Interpret the meaning of the​ p-value.

Construct a​ 95% confidence interval estimate of the population mean life of the light bulbs.

Compare the results of​ (a) and​ (c). What conclusions do you​ reach?

28. You are the manager of a restaurant for a​ fast-food franchise. Last​ month, the mean waiting time at the​ drive-through window for branches in your geographical​ region, as measured from the time a customer places an order until the time the customer receives the​ order, was 3.7 minutes. You select a random sample of 81 orders. The sample mean waiting time is 3.89 minutes, with a sample standard deviation of 0.9 minutes.

At the 0.10 level of​ significance, is there evidence that the population mean waiting time is different from 3.7 minutes? State the null and alternative hypotheses.

Determine the test statistic

Find the​ p-value.

State the conclusion.

Because the sample size is 81​, do you need to be concerned about the shape of the population distribution when conducting the t test in​ (a)? Explain. Choose the correct answer below.

Should an operating system process scheduler treat a process that makes extensive use of a hard-disk storage device differently from one that makes extensive use of a solid-state storage device? Give your reasons.

Answer All Questions:

1. What is the difference between a population and a samplein statistics?(I need Unique answer) (i need more details and more Explain)(use your own words don't copy and paste) (don't use handwritting) (put ypur refrence URL Link)
2. How to interpret confidence intervals and confidence levels? (I need Unique answer) (i need more details and more Explain)(use your own words don't copy and paste) (don't use handwritting) (put ypur refrence URL Link)
3. Why the p-value is important? (I need Unique answer) (i need more details and more Explain)(use your own words don't copy and paste) (don't use handwritting) (put ypur refrence URL Link)

The total owners’ equity is usually under a number of subcaptions on the corporation’s balance sheet.

Required:

a. List the major subdivisions of the stockholders’ equity section of a corporate balance sheet and describe briefly the nature of the amounts that will appear in each section.

b. Explain fully the reasons for subdividing the amount of stockholders’ equity, including legal, accounting, and other considerations.

c. Describe three kinds of transactions that will result in paid-in or permanent capital in excess of legal or stated capital.

d. Various accounting authorities have recommended that the terms paid-in surplus and earned surplus not be used in published financial statements. Explain briefly the reason for this suggestion and indicate acceptable substitutes for the terms.