Question

In: Statistics and Probability

1. Clear statement of hypotheses, with the correct parameter(s) 2. An indication of the test used...

1. Clear statement of hypotheses, with the correct parameter(s)
2. An indication of the test used
3. The test statistic and p-value
4. An indication of the statistical decision (i.e. whether or not to reject Ho)
     along with an explanation.
5. An interpretation of the statistical decision in the context of the problem.

#1)   The annual salaries for a random sample of 16 actuaries working in New York have a standard deviation of $16,000.   The annual salaries of a random sample of 17 actuaries working in California have a standard deviation of $9600.   Using a significance level of a = .05, is there significant evidence that the standard deviation of the annual salaries is greater in New York than it is in California?

Solutions

Expert Solution

F = 0.028, df1 = 15, df2 = 16

Left-tail p-value is 4.623e-9

R command: pf(0.028, 15, 16)

please like ??

orchestra answered 1 year ago
Next > < Previous

Related Solutions

Which of the following pairs of hypotheses are used to test if the mean of the...
Which of the following pairs of hypotheses are used to test if the mean of the first population is smaller than the mean of the second population, using independent random sampling? Multiple Choice A. H0: µD ≤0, HA: µD >0 B. H0: µD ≥0, HA: µD <0 C. H0: µ1 – µ2≥ 0, HA: µ1 – µ2< 0 D. H0: µ1 – µ2≤ 0, HA: µ1 – µ2> 0 Please let me know A, B, C, or D. And a...
Which of the following statement(s) is correct?
Which of the following statement(s) is correct?Cash flows are conventional when there are no cash inflows prior to a cash outflow.In terms of shareholder wealth maximization in the context of mutually exclusive projects, the project with the higher IRR is not necessarily better than the project with the lower IRR.Financing matters for valuation, but is typically ignored in determining cash flows in capital budgeting.a. All three are falseb. Only 1. is correctc. All three are correctd. Only 2. is correcte....
1. The null and alternative hypotheses are given. Determine whether the parameter that is being tested....
1. The null and alternative hypotheses are given. Determine whether the parameter that is being tested. Parameter: (Population mean, Population proportion, Sample mean, Sample proportion) a. H0: μ = 9.5 H1: μ ≠ 9.5    b. H0: p =0.05 H1: p < 0.05 1.B) A referendum for an upcoming election is favored by more than half of the voters. 1. Is this about a mean or a proportion? a. proportion b. mean 2. Identify the null hypothesis, the alternative hypothesis...
Question 1. which of the of the following statement(s) is(are) correct?         (a) Volatile memory loses...
Question 1. which of the of the following statement(s) is(are) correct?         (a) Volatile memory loses all data when power is removed, but is easy to write to.         (b) DRAM needs to be accessed every few microseconds to refresh the charges, otherwise the information is lost.         (c) The storage of program usually requires nonvolatile memory.         (d) Each memory cell cost more in SRAM than DRAM.         (e) EPROM is electrically programmable but EEPROM is not electrically programmable....
1.       Which statement(s) is (are) correct? a.       The planning horizon for any business is between three...
1.       Which statement(s) is (are) correct? a.       The planning horizon for any business is between three and five years. b.      Forecasts that extend beyond the planning horizon are less credible. c.       The planning horizon should be the furthest point in the future considered by the business plan. d.      The planning horizon for a hotel owner is determined by the length of the management contract. 2.       What statement would a hotel owner prefer to see in the business plan for a...
Of the following statements, which are correct? 1) Kolmogorov-Smirnov test can be used to compare the...
Of the following statements, which are correct? 1) Kolmogorov-Smirnov test can be used to compare the medians of two continuous populations based on two independent samples from the two populations 2) Sample data on one variables collected from each of n randomly selected subjects at two distinct time points are considered two independent samples. 3) Wilcoxon ranks-sum test can be used to compare population medians using paired random samples 4) Fisher's exact test can be used to see if proportions...
Which statement is correct ? 1 ) Arteriosclerosis is a group of disorders 2 ) Atherosclerosis...
Which statement is correct ? 1 ) Arteriosclerosis is a group of disorders 2 ) Atherosclerosis is a broader term than arteriosclerosis Arteriosclerosis is a type of atherosclerosis 4) Atheromas occur in arteriosclerosis but not atherosclerosis
Use the sample data below to test the hypotheses H 0: p 1 = p 2...
Use the sample data below to test the hypotheses H 0: p 1 = p 2 = p 3 H a: Not all population proportions are the same Populations Response 1 2 3 Yes 200 200   92 No 150 200 108 where p i is the population proportion of yes responses for population i. Using a .05 level of significance. Use Table 12.4. Compute the value of the   2 test statistic (to 2 decimals). The p-value is - Select your answer...
Use the sample data below to test the hypotheses H 0: p 1 = p 2...
Use the sample data below to test the hypotheses H 0: p 1 = p 2 = p 3 H a: Not all population proportions are the same Populations Response 1 2 3 Yes 150 150 92 No 100 150 108 where p i is the population proportion of yes responses for population i. Using a .05 level of significance. Use Table 12.4. a. Compute the sample proportion for each population. Round your answers to two decimal places. p̄ 1...
For each test below, follow the following steps. (1) state the hypotheses, (2) formulate an analysis...
For each test below, follow the following steps. (1) state the hypotheses, (2) formulate an analysis plan (3) analyze sample data (4) interpret the results You may use the TI-83 to calculate the test statistic and p-value, but be sure you indicate which test you are using. Test III – Test a New Drug (Part 2) Suppose the Acme Drug Company develops a new drug, designed to prevent colds. The company states that the drug is more effective for women...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT