17.    A hypothesis test of ?0: ?1 = ??2 versus ?1: ??1 ≠ ?2 produces a p-value of .057.  Which of the following could be a 95% confidence interval for ?1 − ?2? (A)    (– 0.011, 0.043) (B)    (– 0.043, – 0.011) (C)    (0.011, 0.043) (D)    (0.011, 0.063)

Tonya wants to estimate what proportion of her school's seniors plan to attend the prom. She interviews an SRS of 50 of the 750 seniors in her school and finds that 36 plan to go to the prom. Which of the following is not one of the conditions that needs to be met in order to construct a confidence interval for the parameter? Large Counts: n(1 – p) = 14 10 Random: The sample is a simple random sample 10% n = 50 is less than 10% of the population size Large Counts: nộ = 36 > 10 Normal/Large Sample: The sample size is large n 50 30. O O O O O

The following information is obtained for a sample of 80 observations taken from a population. SS xx 370.842, se = 0.922, and y = 164.43 - 2.83x Make a 97 % confidence interval for B. = Round your answers to two decimal places. The 97 % confidence interval for Bis ( i ).

Suppose that in a random sample of 600 employed Americans, there are 55 individuals who say that they would fire their boss if they could. Calculate a 90% confidence interval for the population proportion who would fire their boss if they could. (Round the answers to three decimal places.) ______to______

What conclusion would be appropriate for an upper-tailed chi-squared test in each of the following situations? In USE SALT (a) a = 0.05, df = 4, x² = 11.75 O we would reject Ho. O We would fail to reject Hg. (b) a = 0.01, df = 3, x? = 8.59 O We would reject Ho. O We would fail to reject Ho. (c) a = 0.10, df = 2, x2 = 4.46 O We would reject Ho. O We would fail to reject Hg. a = 0.01, k = 6, x? = 11.60 (d) O We would reject Ho. O We would fail to reject Ho.

B. The test​ statistic, t=____ C.The​ P-value is_____ D.State the conclusion for the test. Reject the null hypothesis or Fail to reject the null hypothesis.   E. Construct a confidence interval appropriate for the hypothesis test in part​ (a). ___lb<μ1−μ2<____lb   F. Does the confidence interval support the conclusion found with the hypothesis​ test? (No/Yes) because the confidence interval contains  (only negative values/ only positive values/ zero.)

#11 A sample of 2,018 American adults was asked how they viewed China, with 13% of respondents calling the country "unfriendly" and 9% of respondents indicating the country was "an enemy". Construct a 95% confidence interval of the proportion of American adults who viewed China as either "unfriendly" or "an enemy." Multiple Choice [0.2049, 0.2351] [0.1916, 0.2484] [0.2111, 0.2289] [0.2019, 0.2381]

true? What error we make when we fail to reject the null hypothesis when the alternative is actually A. Type I B. Type II C. No error Consider the null and alternative hypothesis: Ho: #₁ = µ2, H₂ ₁2. For which of the following 95% confidence intervals would you reject the null hypothesis? A. (-1.5, 2.5) B. (0, 2.5) C. (0.1, 2.5) Suppose you conduct a hypothesis test Ho: P₁ - P2 = 0 versus Ha: P1 P2 > 0 and obtain a test statistic z = 2.5. Which of the following is the correct Matlab command for the p-value? A. normcdf (2.5) B. 1-normcdf (2.5) C. 2*normcdf (2.5) D. 2*(1-normcdf (2.5))

(5) You take a random sample from some population and form a 98% confidence interval for the population mean, a. Which quantity is guaranteed to be in the interval you form? A. 0 B. u C. D. 0.98

Help with D & E