A personnel director in a particular state claims that the mean annual income is greater in one of the state's coundies (county A) than it is in another county (county B) In County A a random sampleof 17 residents has a mean annual income of $40,300 and a standard deviation of $8100 In County B, a random sample of 8 residents has a mean annual income of $38.500 and a standarddeviation of $5700 At a 0.05, answer parts (a) through (e) Assume the population variances are not equal. If convenient, use technology to solve the problem(a) identify the claim and state H and HWhich is the correct claim below?OA "The mean annual income in county A is less than in county BOB. The mean annual incomes in countes A and B are equal"OC. The mean annual income in county A is greater than in county B.OD. The mean annual incomes in countes A and B are not equalWhat are H, and H₂?The nut hypothesis. Hy isWhich hypothesis is the clam?The null hypothesis H₂The alternative hypothesis, H,(b) Find the critical value(s) and identify the rejection region(s)Enter the critical value(s) below(Type an integer or decimal rounded to three decimal places as needed Use a comma to separate answers as needed)Select the correct rejection region(s) belowOA-64146OB PE Select the correct rejection region(s) below.OA. -toOC. 1<- 6.16OD. 1<-b(c) Find the standardized test statistic.1# (Type an integer or decimal rounded to three decimal places as needed.)(d) Decide whether to reject or fail to reject the null hypothesis.the null hypothesis.(e) Interpret the decision in the context of the original claim.At the 5% significance level,enough evidence to support the personnel director's claim.

Note: According to Bartleby expert guidelines, we can answer only first question with their three…

Answered: (a) identify the claim and state H, and…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Which of the following statements is correct ? If a coefficient is significant at the 10% level, it must be significant at the 5% level. If a coefficient is not significant at the 10% level, it may be significant at the 5% level. If a coefficient is not significant at the 5% level, it must not be significant at the 10% level. O If a coefficient is not significant at 1% level, it may be significant at the 5% level.
(a) Write the claim mathematically and identify H0 and Ha. Which of the following correctly states H0 and Ha? (b) Use technology to find the P-value.(Round to three decimal places as needed. (c) Decide whether to reject or fail to reject the null hypothesis. (d) Interpret the decision in the context of the original claim.
Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject the null hypothesis? A scientist claims that the mean incubation period for the eggs of a species of bird is at least 34 days. Does the claim represent the null hypothesis or the alternative hypothesis? Since the claim a statement of equality, it represents the V hypothesis.
You are conducting a test of independence to see if getting the flu is independent of whether or not you got a flu shot. Use a = 0.05. Report all answers accurate to four decimal places. Here is the sample data. Category Got Flu Shot Did not get Flu Shot Category Got Flu Shot The expected observations for this table would be: Got the Flu Did not get Flu Shot The resulting (O - E)² E Got the Flu 18 51 Category Got Flu Shot Did not get Flu Shot Did not get the Flu 118 19 Got the Flu for finding the test are: Did not get the Flu What is the p-value for this test-statistic? P-Value = Did not get the Flu What is the chi-square test-statistic for this data? (add the results from the previous table) x² =
Show work or excel formulas pls
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Researchers are trying to look at the possible reasons behind the aging population of Filipino farmers. One possible link to this issue is the decrease in the amount of pay farmers are receiving. Based on the Philippine Statistics Authority (PSA) report, farmers earn an average of 8,000 pesos in a month. R COMMANDER OUTPUT Shapiro-Wilk normality test data: IncomeMonth W - 0.6007, p-value < 2.2e-16 R COMMANDER OUTPUT R COMMANDER OUTPUT Wilcoxon signed rank test with continuity correction One Sample t-test data: IncomeMonth t - 1.9348, df - 669, p-value - 0.9733 data: IncomeMonth V = 79590, p-value - 0.000000006355
Q2 ANOVA The following side-by-side box plots show the prices (in thousands) of 48 houses in Corvallis, OR. The houses are divided into age categories: N = New (0-24 years old), M = Medium (25-50 years old), O = Old (50-75 years old), and VO = Very Old (75+ years old). Each category contains 12 randomly selected homes. House Price in Thousands 500- 400- 300 200- 100- Q2.1 M ó Age Category vo TRUE or FALSE: All categories contain at least one outlier. O True O False
Question Help For the given claim, complete parts (a) and (b) below. Claim The mean weight of beauty pageant winners is 115 pounds A study of 20 randomly selected beauty pageants resulted in a mean winner weight of 117 pounds a. Express the original claim in symbolic form.
The null hypothesis when testing for a single population can take many forms depending on the parameter being studied. If the parameter of interest is the population mean, which statement best represents the original claim that the parameter equals a given value, k?
If the null hypothesis is true in a test of the Pearson’s correlation between X and Y, then __________. a. higher scores of X are paired with higher scores of Y b. none of mentioned here c. higher scores of X are paired with low and high scores of Y d. higher scores of X are paired with lower scores of Y e. lower scores of X are paired with higher scores of Y
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