Question

E) None of these An article in a journal reports that 34 percent of American fathers take no responsibility for child care. A researcher claims that the figure is higher for fathers in the town of Littleton. A random sample of 234 fathers from Littleton yielded 96 who did not help with child care Test the researcher's claim at the 0.05 significance level. (there are three correct choices in this question) SELECT ALL APPLICABLE CHOICES A) There is enough evidence to support the Claim B) Not enough evidence to reject the Claim C) Ho: p 34 (claim) H P>.34 (claim) E) There is enough evidence to reject the Ho F) There is enough evidence to reject the Claim G) Not enough evidence to reject the Ho H) There is enough evidence to support the Ho I) None of these 12 The claim is that the proportion of drowning deaths of children attributable to beaches is more than 0.25, and the sample statistics include n 575 drowning deaths of children with 30 percent of them attributable to beaches.. Find the value of the test statistic z using- SELECT ALL APPLICABLE CHOICES A) -2.77 C) 2.77 E) None of these B) 2.62 D) -2.62 P9/m Assume that a simple random sample has been selected from a normally distributed population and test the given claim. State the final conclusion that addresses the original claim and select three correct choices. Use a significance level of α-0.05 to test the claim that μ-32.6. The sample data consist of 15 scores for which ?41.6 and s 8. Use the traditional method of testing hypotheses. SELECT ALL APPLICABLE CHOICES A) There is enough evidence e to reject the Ho B) There is enough evidence to support the Clainm the Ho C) D) Not enough evidence to reject the Claim E) Not enough evidence to reject the Ho F) There is enough evidence to reject the Claim G) Но : Al-32.6 (claim) 1: 32.6 Ho: μ>32.6 (claim) H1 : μ<32.6 H) There is enough evidence to support the Ho I) None of these

Answer 1

11. Correct answer: Option (D)

Sample proportion: 0.4102564
Test Statistic, z: 2.2687
Critical z: 1.6449
P-Value: 0.0116

Here P-value < alpha 0.05 so we reject H0

Correct answer: Option (E)

12. Correct answer: Option (C)
since
Z = (0.30 - 0.25) / Sqrt( 0.25*0.75/575) = 2.77

13. Correct answer: Option (C)
since
t Test
Test Statistic, t: 4.3571
Critical t: ±2.1448
P-Value: 0.0007
Here P-value < alpha 0.05 so we reject H0
Option (A)