You want to test if the proportion of students living on campus is larger than 0.6. Which of the following is the appropriate null and alternative hypotheses? Hop 0.6 vs Ha: p ≤ 0.6 Ho p < 0.6 vs Ha: p > 0.6 Ho p≥ 0.6 vs Ha: p < 0.6 Ho p ≤ 0.6 vs Ha: p > 0.6 None of the above
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- How do you partial differentiate Q = 15K^1.7L^1.3 + K^3 + 5^3 alone? If you were to exclude the second question6 In a test of hypothesis, the symbol α represents: a The level of significance, or the probability of rejecting a true H₀. b The power of the test, or the probability of rejecting a false H₀. c The level of significance, or the probability of not rejecting a false H₀. d The level of significance, or the probability of committing a Type II error.The score of 8 candidates prior and after training are given below Test the hypothesis whether performance improved after the training at 5% los. Prior 84 48 36 37 54 69 83 96 After 90 58 42 44 62 81 84 86
- In a national survey, middle school students report spending 3.1 hours per week on homework. Mr. Jones suspects that his students study more than the national average. What are Mr. Jones’s null and alternative hypotheses? attached in ss below thnaks for hepl hwrlpohwh wA report on the U.S. economy indicates that 30% of Americans have experienced difficulty in making mortgage payments. A news organization randomly sampled 400 Americans from 10 cities named the “fastest dying cities in the U.S.” (Forbes Magazine, August 2008) and found that 140 reported such difficulty. Does this indicate that the problem is more severe among these cities? a. Write the null and alternative hypotheses. b. What is the value of the test statistic? c. What is the associated P-value? d. State your conclusion using α = 0.05.Suppose employers care about overall productivity Z, which is made up of two components, X and Y, such that Z=X+Y (and employers know this productivity function). Suppose there are two groups (male and female) whose average Zs are the same (i.e. Z_M =Z_F), but X_M < X_F and Y_M > Y_F (and again, employers know these population averages). Researchers decide to run a resume-based audit study where they randomize names based on gender (using typically male or female names) but hold constant Y. They provide no information on X. Which of the following would suggest taste-based discrimination? ● The call-back rate is the same for both sexes. ● The call-back rate is higher for men than for women ● We can't use differences in call-back rates to find suggestive evidence of taste-based discrimination because there's too many other factors that are different across the resumes. ● The call-back rate is higher for women than for men
- I want a differrent answer for this question. the answer provided is too much publicatedSuppose you are a consultant to a fast food chain. The fast food chain is interested in measuring the population variance in the number of customers it has on adaily basis in all its stores in the U.S. However, it is limited in its ability to track this number across all stores and has to select a sample. Think critically about thefollowing questions:1. There are two estimators for the population variance with different levels of bias and variance. Explain how you would go about choosing between thesetwo estimators.2. You are interested in coming up with a 95% confidence interval for the population variance. How would you go about deciding the number of outlets tosample?15 To perform a test of hypothesis that the population slope parameter is zero, the test statistic t is ______. a 14.487 b 16.097 c 17.885 d 19.873
- Q1. State the property of an estimator that gives a correct estimate of the population parameter of interest, but only on average. Q2. State the property of ian estimal or thal converges to the populalion paaameter of interest as the sample size goes to infinity. Q3. Why is an efficient estimator a desirable property of the OLS estimator? Q4. Stare the assumption(s)under the classical linearregression model giving rise to a biased standard error of the coefficient estimates when violated.You are asked to perform a hypothesis test that population proportion is different from 0.35. Which of the following is the correct statement of the null and alternative hypotheses for this test? a H₀: π = 0.35 H₁: π ≠ 0.35 b H₀: π ≠ 0.35 H₁: π = 0.35 c H₀: π ≥ 0.35 H₁: π < 0.35 d H₀: π ≤ 0.35 H₁: π > 0.35DISCUSS IF TRUE OR FALSE Heteroscedasticity can be tested by just comparing variances of 2 random splits sets of error terms.